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Gallery, Projects and General => Project Logs => Topic started by: sbwhart on November 24, 2014, 02:55:03 PM

Title: Tiny Vertical Based On G. Britnell's Design
Post by: sbwhart on November 24, 2014, 02:55:03 PM: I'm get very very close to steaming my loco (honest) its been a bit of the trial and may still jump up and bite me, but I've been getting very itchy to design and build an engine.

This one is not all my design I've based it on Georges' design that you can follow her http://www.modelenginemaker.com/index.php?topic=570.0 but as I'm on the metric side of the pond I've been converting Georges' drawing to metric friendly sizes, I've also designed it with a piston valve instead of the slide valve George used as I hope that will be easier to make:- we will have to see on that one.

I've attached the drawings for those who are interested

I made a start on it this morning, but the first thing I did before starting to make parts was to get a bit of kit together that I thought that I may need.

I use an ER32 collet on my mill which is fine for normal work, but I've found that with small parts and cutters it tends to obscure the job so I got a set ER16 collets and straight shank holder that I will piggy back on the ER 32

(http://i431.photobucket.com/albums/qq32/sbwhart/Wee%20Vertical%20Engine/DSC01471_zps28de3627.jpg) (http://s431.photobucket.com/user/sbwhart/media/Wee%20Vertical%20Engine/DSC01471_zps28de3627.jpg.html)

I shortened it by 40mm using a dremell cut off wheel it was too had for a hacksaw.

(http://i431.photobucket.com/albums/qq32/sbwhart/Wee%20Vertical%20Engine/DSC01461_zps71cee03b.jpg) (http://s431.photobucket.com/user/sbwhart/media/Wee%20Vertical%20Engine/DSC01461_zps71cee03b.jpg.html)

I made a tap wrench to fit in the chuck and a small die holder for the lathe, I also drilled and tapped few practice holes M1 and turned and threaded a male thread, as you can see in the chunk of ally in the shot

First up the base:-

Square a bit of ally to size.

(http://i431.photobucket.com/albums/qq32/sbwhart/Wee%20Vertical%20Engine/DSC01464_zps3d410c36.jpg) (http://s431.photobucket.com/user/sbwhart/media/Wee%20Vertical%20Engine/DSC01464_zps3d410c36.jpg.html)

When making small parts you need a small helper.

(http://i431.photobucket.com/albums/qq32/sbwhart/Wee%20Vertical%20Engine/DSC01468_zps40655525.jpg) (http://s431.photobucket.com/user/sbwhart/media/Wee%20Vertical%20Engine/DSC01468_zps40655525.jpg.html)

:D

Mill the pocket in the base

(http://i431.photobucket.com/albums/qq32/sbwhart/Wee%20Vertical%20Engine/DSC01470_zpscbbaf413.jpg) (http://s431.photobucket.com/user/sbwhart/media/Wee%20Vertical%20Engine/DSC01470_zpscbbaf413.jpg.html)

Then mill the middle out and mill the steps

(http://i431.photobucket.com/albums/qq32/sbwhart/Wee%20Vertical%20Engine/DSC01473_zpsc0859fe1.jpg) (http://s431.photobucket.com/user/sbwhart/media/Wee%20Vertical%20Engine/DSC01473_zpsc0859fe1.jpg.html)

Then drill and tap the M1 holes

(http://i431.photobucket.com/albums/qq32/sbwhart/Wee%20Vertical%20Engine/DSC01479_zpsfb2768ef.jpg) (http://s431.photobucket.com/user/sbwhart/media/Wee%20Vertical%20Engine/DSC01479_zpsfb2768ef.jpg.html)

(http://i431.photobucket.com/albums/qq32/sbwhart/Wee%20Vertical%20Engine/DSC01481_zps2a85366a.jpg) (http://s431.photobucket.com/user/sbwhart/media/Wee%20Vertical%20Engine/DSC01481_zps2a85366a.jpg.html)

No broken drill or taps :whoohoo:

Then profile around the outside

(http://i431.photobucket.com/albums/qq32/sbwhart/Wee%20Vertical%20Engine/DSC01483_zpsc076a00f.jpg) (http://s431.photobucket.com/user/sbwhart/media/Wee%20Vertical%20Engine/DSC01483_zpsc076a00f.jpg.html)

That's the first bit done

(http://i431.photobucket.com/albums/qq32/sbwhart/Wee%20Vertical%20Engine/DSC01485_zps9a3276ad.jpg) (http://s431.photobucket.com/user/sbwhart/media/Wee%20Vertical%20Engine/DSC01485_zps9a3276ad.jpg.html)

Stew
Title: Re: Tiny Vertical Based On G. Britnell's Design
Post by: DavidA on November 24, 2014, 03:32:53 PM: Nice to see someone tackling small jobs.

I hope your paying that little guy a fair wage.

Dave.
Title: Re: Tiny Vertical Based On G. Britnell's Design
Post by: SwarfnStuff on November 25, 2014, 12:26:18 AM: Well I will be watching with interest to see how the little helper gets on. This project is way beyond my limited skills so I plan on being inspired. Thanks for posting, also for the pictures.
John B
Title: Re: Tiny Vertical Based On G. Britnell's Design
Post by: sbwhart on November 28, 2014, 10:59:36 AM: Thanks for your support Chaps

I scrapped a base and I scrapped a support before I got one right :doh:

To make the support first I turned up a blank on the lathe

(http://i431.photobucket.com/albums/qq32/sbwhart/DSC01518_zps0dbbfd11.jpg) (http://s431.photobucket.com/user/sbwhart/media/DSC01518_zps0dbbfd11.jpg.html)

Then I mounted it in a ER32 square index block

zeroed the DRO on its centre line and front face then proceded to mill out the fillets it was just a mater of indexing it round and repeating what I did to one side to the other.

(http://i431.photobucket.com/albums/qq32/sbwhart/DSC01524_zps456f4936.jpg) (http://s431.photobucket.com/user/sbwhart/media/DSC01524_zps456f4936.jpg.html)

When it came to doing the angle I just swivelled the vice first one way then the other.

(http://i431.photobucket.com/albums/qq32/sbwhart/DSC01527_zps7f6a730b.jpg) (http://s431.photobucket.com/user/sbwhart/media/DSC01527_zps7f6a730b.jpg.html)

It was then just a mater of cleaning it up and sculpting to shape with a dremel and some Swiss files.

(http://i431.photobucket.com/albums/qq32/sbwhart/Wee%20Vertical%20Engine/DSC01534_zpsf124f650.jpg) (http://s431.photobucket.com/user/sbwhart/media/Wee%20Vertical%20Engine/DSC01534_zpsf124f650.jpg.html)

(http://i431.photobucket.com/albums/qq32/sbwhart/Wee%20Vertical%20Engine/DSC01533_zps9bf07859.jpg) (http://s431.photobucket.com/user/sbwhart/media/Wee%20Vertical%20Engine/DSC01533_zps9bf07859.jpg.html)

Then it was a mater of putting it back in the lathe to ream the bore 6mm and part off.

(http://i431.photobucket.com/albums/qq32/sbwhart/Wee%20Vertical%20Engine/DSC01538_zps54c6c74a.jpg) (http://s431.photobucket.com/user/sbwhart/media/Wee%20Vertical%20Engine/DSC01538_zps54c6c74a.jpg.html)

All that remained was drill the base and the four holes at the top:-

This what it looks like with my little helper Jack. :lol:

(http://i431.photobucket.com/albums/qq32/sbwhart/DSC01540_zpsc3545ecc.jpg) (http://s431.photobucket.com/user/sbwhart/media/DSC01540_zpsc3545ecc.jpg.html)

Stew
Title: Re: Tiny Vertical Based On G. Britnell's Design
Post by: tom osselton on November 28, 2014, 03:16:24 PM: Nice work!
Title: Re: Tiny Vertical Based On G. Britnell's Design
Post by: SwarfnStuff on November 29, 2014, 01:34:37 AM: Must nearly be time for "Jack" to have a coffee break? :coffee:
Thanks again for this post
Title: Re: Tiny Vertical Based On G. Britnell's Design
Post by: tom osselton on November 29, 2014, 02:57:32 PM: The motor is going to be bigger than your man I think your going to need a bigger boat!
Title: Re: Tiny Vertical Based On G. Britnell's Design
Post by: sbwhart on November 30, 2014, 07:51:01 AM: Thanks Chaps

I've given Jack his dinner, roast beef with all the trimming followed by apple pie and custard:- don't know where he puts it.

:)

On with the cylinder:- First a turned up a blank in the lathe then transferred the chuck over onto my spin indexer on the mill and proceded to mill the valve port face and to sculpt away the shape of the cylinder by indexing 1 deg steps until I got the finished shape.

(http://i431.photobucket.com/albums/qq32/sbwhart/Wee%20Vertical%20Engine/DSC01547_zps1d8e0711.jpg) (http://s431.photobucket.com/user/sbwhart/media/Wee%20Vertical%20Engine/DSC01547_zps1d8e0711.jpg.html)

Then it was a mater of drilling the valve ports and the drilling and tapping M1 for the steam chest.

(http://i431.photobucket.com/albums/qq32/sbwhart/Wee%20Vertical%20Engine/DSC01553_zpsc457527b.jpg) (http://s431.photobucket.com/user/sbwhart/media/Wee%20Vertical%20Engine/DSC01553_zpsc457527b.jpg.html)

Then everything was moved back onto the lathe whilst every thing was nice and secured I finished off the shape

(http://i431.photobucket.com/albums/qq32/sbwhart/Wee%20Vertical%20Engine/DSC01555_zps53b999c6.jpg) (http://s431.photobucket.com/user/sbwhart/media/Wee%20Vertical%20Engine/DSC01555_zps53b999c6.jpg.html)

Then drilled and reamed 6mm the bore 6mm

(http://i431.photobucket.com/albums/qq32/sbwhart/Wee%20Vertical%20Engine/DSC01557_zpsab687025.jpg) (http://s431.photobucket.com/user/sbwhart/media/Wee%20Vertical%20Engine/DSC01557_zpsab687025.jpg.html)

I just parted it off to length

(http://i431.photobucket.com/albums/qq32/sbwhart/Wee%20Vertical%20Engine/DSC01558_zpsfa81584b.jpg) (http://s431.photobucket.com/user/sbwhart/media/Wee%20Vertical%20Engine/DSC01558_zpsfa81584b.jpg.html)

Centred it under the mill

(http://i431.photobucket.com/albums/qq32/sbwhart/Wee%20Vertical%20Engine/DSC01559_zps6df3926b.jpg) (http://s431.photobucket.com/user/sbwhart/media/Wee%20Vertical%20Engine/DSC01559_zps6df3926b.jpg.html)

The drilled and tapped m1 for the covers and drilled and milled the air passage at both ends.

(http://i431.photobucket.com/albums/qq32/sbwhart/Wee%20Vertical%20Engine/DSC01563_zps7d747a7e.jpg) (http://s431.photobucket.com/user/sbwhart/media/Wee%20Vertical%20Engine/DSC01563_zps7d747a7e.jpg.html)

I've also made the top and bottom covers.

Heir's all the bits assembled to date.

(http://i431.photobucket.com/albums/qq32/sbwhart/Wee%20Vertical%20Engine/DSC01565_zps1be0e7d2.jpg) (http://s431.photobucket.com/user/sbwhart/media/Wee%20Vertical%20Engine/DSC01565_zps1be0e7d2.jpg.html)

I'll be having a rest from this for a couple of days has we have visitors stopping.

Stew
Title: Re: Tiny Vertical Based On G. Britnell's Design
Post by: awemawson on November 30, 2014, 08:17:03 AM: Good work Sir!

I'd need new eyes to do small things like that. M1 threads - that's swarf !!!!!
Title: Re: Tiny Vertical Based On G. Britnell's Design
Post by: krv3000 on November 30, 2014, 07:11:26 PM: love it
Title: Re: Tiny Vertical Based On G. Britnell's Design
Post by: steampunkpete on December 01, 2014, 04:11:58 PM: You can't fool me, that's all your own work. Jack doesn't really help you, he just watches - I can tell 'cos the spanner is too big, and it's worn out; it wouldn't undo a nut! :)
Title: Re: Tiny Vertical Based On G. Britnell's Design
Post by: DMIOM on December 01, 2014, 05:15:45 PM: Jack's holding it that way because he's just used the screwdriver blade on the bottom of the handle to tighten those slotted screws which hold the standard onto the base! (and, you never know, the 'blind' side of that spanner might in fact be some sort of pin-wrench?
Title: Re: Tiny Vertical Based On G. Britnell's Design
Post by: sbwhart on December 06, 2014, 04:08:37 AM: Thanks Chaps

On with the next bit I seem to be settling into a routine of scrapping the first attempt for various reasons and getting it right with the second.

Fist op was to turn up a blank in the lathe and drill and ream the valve bore 3mm.

(http://i431.photobucket.com/albums/qq32/sbwhart/Wee%20Vertical%20Engine/DSC01567_zps2d0b13ae.jpg) (http://s431.photobucket.com/user/sbwhart/media/Wee%20Vertical%20Engine/DSC01567_zps2d0b13ae.jpg.html)

Then keeping the blank in the chuck transfer the whole lot over onto the spin indexer.

(http://i431.photobucket.com/albums/qq32/sbwhart/Wee%20Vertical%20Engine/DSC01577_zps61c751a9.jpg) (http://s431.photobucket.com/user/sbwhart/media/Wee%20Vertical%20Engine/DSC01577_zps61c751a9.jpg.html)

Then mill it up into the oblong shape.

(http://i431.photobucket.com/albums/qq32/sbwhart/Wee%20Vertical%20Engine/DSC01568_zpsb135c3b5.jpg) (http://s431.photobucket.com/user/sbwhart/media/Wee%20Vertical%20Engine/DSC01568_zpsb135c3b5.jpg.html)

Then to centre the mill up on the part in the x and y and using the indexer to manipulate it to proceed to drill and tap the part to the required sizes.

(http://i431.photobucket.com/albums/qq32/sbwhart/Wee%20Vertical%20Engine/DSC01576_zpsefd92ec2.jpg) (http://s431.photobucket.com/user/sbwhart/media/Wee%20Vertical%20Engine/DSC01576_zpsefd92ec2.jpg.html)

The transfer the whole lot back on to the lathe and part it off to length.

(http://i431.photobucket.com/albums/qq32/sbwhart/Wee%20Vertical%20Engine/DSC01578_zpseec75643.jpg) (http://s431.photobucket.com/user/sbwhart/media/Wee%20Vertical%20Engine/DSC01578_zpseec75643.jpg.html)

That it job done.

(http://i431.photobucket.com/albums/qq32/sbwhart/Wee%20Vertical%20Engine/DSC01581_zps77caf791.jpg) (http://s431.photobucket.com/user/sbwhart/media/Wee%20Vertical%20Engine/DSC01581_zps77caf791.jpg.html)

As the assembly is getting a bit bigger Jack has enlisted the help of his apprentice Liz.

Cheers

Stew
Title: Re: Tiny Vertical Based On G. Britnell's Design
Post by: sbwhart on December 07, 2014, 07:49:05 AM: I've only just realised that I've missed off some features from two of the parts :doh:

Putting that right will be my next job.

In the mean time I've completed some more parts the main bearings.

Again I started by turning and drilling a blank on the lathe.

Then manipulating it in the spin indexer mill it to shape.

(http://i431.photobucket.com/albums/qq32/sbwhart/Wee%20Vertical%20Engine/DSC01584_zpsef295ae7.jpg) (http://s431.photobucket.com/user/sbwhart/media/Wee%20Vertical%20Engine/DSC01584_zpsef295ae7.jpg.html)

The drill the holes.

(http://i431.photobucket.com/albums/qq32/sbwhart/Wee%20Vertical%20Engine/DSC01588_zps556754d8.jpg) (http://s431.photobucket.com/user/sbwhart/media/Wee%20Vertical%20Engine/DSC01588_zps556754d8.jpg.html)

Then back onto the lathe for parting off

(http://i431.photobucket.com/albums/qq32/sbwhart/Wee%20Vertical%20Engine/DSC01591_zpsc912d2dd.jpg) (http://s431.photobucket.com/user/sbwhart/media/Wee%20Vertical%20Engine/DSC01591_zpsc912d2dd.jpg.html)

I've used a catch wire to stop the part flicking off disappearing to be collected by the shop GREMLINS :scratch:

These are the finished parts

(http://i431.photobucket.com/albums/qq32/sbwhart/Wee%20Vertical%20Engine/DSC01593_zps49a5390e.jpg) (http://s431.photobucket.com/user/sbwhart/media/Wee%20Vertical%20Engine/DSC01593_zps49a5390e.jpg.html)

Cheers

Stew
Title: Re: Tiny Vertical Based On G. Britnell's Design
Post by: awemawson on December 07, 2014, 08:13:09 AM: I really like the idea of a 'catch wire' when making small parts - I'm going to tuck that one away in what small amount of grey cells that I have left :thumbup:
:clap:
The idea of manipulating it in the spin indexer is also a very handy idea - ensures reasonable right angledness in a short set up time - I like it.
Title: Re: Tiny Vertical Based On G. Britnell's Design
Post by: sbwhart on December 08, 2014, 08:09:09 AM: Thanks Andrew

On with the crankshaft:- this is made in one piece from a bit of 3/8" mild steel

1st turn up one of the main journals 2.5mm

(http://i431.photobucket.com/albums/qq32/sbwhart/Wee%20Vertical%20Engine/DSC01596_zpsee914575.jpg) (http://s431.photobucket.com/user/sbwhart/media/Wee%20Vertical%20Engine/DSC01596_zpsee914575.jpg.html)

Then make an eccentric bush by packing out one jaw to give the off set throw.

(http://i431.photobucket.com/albums/qq32/sbwhart/Wee%20Vertical%20Engine/DSC01597_zps3489fd09.jpg) (http://s431.photobucket.com/user/sbwhart/media/Wee%20Vertical%20Engine/DSC01597_zps3489fd09.jpg.html)

I drill the bush to take a grub screw to grip the work, it was then a mater of turning up the big end journal 2.5mm with a cranked tool so that I could get up close to the job.

(http://i431.photobucket.com/albums/qq32/sbwhart/Wee%20Vertical%20Engine/DSC01599_zps5aeaa328.jpg) (http://s431.photobucket.com/user/sbwhart/media/Wee%20Vertical%20Engine/DSC01599_zps5aeaa328.jpg.html)

(http://i431.photobucket.com/albums/qq32/sbwhart/Wee%20Vertical%20Engine/DSC01602_zpsfa659446.jpg) (http://s431.photobucket.com/user/sbwhart/media/Wee%20Vertical%20Engine/DSC01602_zpsfa659446.jpg.html)

Next I made a split bush to hold the shaft nice and secure to turn up the other main journal

(http://i431.photobucket.com/albums/qq32/sbwhart/Wee%20Vertical%20Engine/DSC01603_zps0a7b9cf9.jpg) (http://s431.photobucket.com/user/sbwhart/media/Wee%20Vertical%20Engine/DSC01603_zps0a7b9cf9.jpg.html)

(http://i431.photobucket.com/albums/qq32/sbwhart/Wee%20Vertical%20Engine/DSC01606_zps6ab0dd03.jpg) (http://s431.photobucket.com/user/sbwhart/media/Wee%20Vertical%20Engine/DSC01606_zps6ab0dd03.jpg.html)

Next using a pair of small vices and three parallels 2*1/8 and 1*1/16 thick mill the counterweight shape on the webs.

(http://i431.photobucket.com/albums/qq32/sbwhart/Wee%20Vertical%20Engine/DSC01609_zps9b3a9c22.jpg) (http://s431.photobucket.com/user/sbwhart/media/Wee%20Vertical%20Engine/DSC01609_zps9b3a9c22.jpg.html)

(http://i431.photobucket.com/albums/qq32/sbwhart/Wee%20Vertical%20Engine/DSC01612_zps71418843.jpg) (http://s431.photobucket.com/user/sbwhart/media/Wee%20Vertical%20Engine/DSC01612_zps71418843.jpg.html)

Job Done

(http://i431.photobucket.com/albums/qq32/sbwhart/Wee%20Vertical%20Engine/DSC01614_zpsa6e7dc3e.jpg) (http://s431.photobucket.com/user/sbwhart/media/Wee%20Vertical%20Engine/DSC01614_zpsa6e7dc3e.jpg.html)

And this is it after Liz had fitted it into to the main bearings.

:lol:

(http://i431.photobucket.com/albums/qq32/sbwhart/Wee%20Vertical%20Engine/DSC01616_zps6b4ff4d4.jpg) (http://s431.photobucket.com/user/sbwhart/media/Wee%20Vertical%20Engine/DSC01616_zps6b4ff4d4.jpg.html)

Cheers

Stew
Title: Re: Tiny Vertical Based On G. Britnell's Design
Post by: vtsteam on December 08, 2014, 11:22:48 AM: I have a hard enough time ruining a 4" long crankshaft blank. That tiny one looks fantastic!

What a cool little engine.
Title: Re: Tiny Vertical Based On G. Britnell's Design
Post by: sbwhart on December 11, 2014, 03:14:30 AM: Decided to make the fly wheel next, so turned up a blank

(http://i431.photobucket.com/albums/qq32/sbwhart/Wee%20Vertical%20Engine/DSC01619_zps0e85892d.jpg) (http://s431.photobucket.com/user/sbwhart/media/Wee%20Vertical%20Engine/DSC01619_zps0e85892d.jpg.html)

Then keeping it on the chuck mounted it to the rotary table and centred it under the mill.

(http://i431.photobucket.com/albums/qq32/sbwhart/Wee%20Vertical%20Engine/DSC01620_zps1adc86da.jpg) (http://s431.photobucket.com/user/sbwhart/media/Wee%20Vertical%20Engine/DSC01620_zps1adc86da.jpg.html)

Then using the RT to move the angle and the DRO to walk round each segment drill the corner holes.

(http://i431.photobucket.com/albums/qq32/sbwhart/Wee%20Vertical%20Engine/DSC01621_zpsddeb942d.jpg) (http://s431.photobucket.com/user/sbwhart/media/Wee%20Vertical%20Engine/DSC01621_zpsddeb942d.jpg.html)

Then with a 3mm slot drill and again using the RT for the angle and the DRO to walk the segment, cleaned each segment up.

(http://i431.photobucket.com/albums/qq32/sbwhart/Wee%20Vertical%20Engine/DSC01626_zpscb43c062.jpg) (http://s431.photobucket.com/user/sbwhart/media/Wee%20Vertical%20Engine/DSC01626_zpscb43c062.jpg.html)

I just tidied everything up with some files and then tilted it in the vice to drill and tap M2 for a clamping grub screw.

(http://i431.photobucket.com/albums/qq32/sbwhart/Wee%20Vertical%20Engine/DSC01628_zps76da6d95.jpg) (http://s431.photobucket.com/user/sbwhart/media/Wee%20Vertical%20Engine/DSC01628_zps76da6d95.jpg.html)

Back into the lathe and part off, and then flip it round and got it running true and tidied up the back face.

(http://i431.photobucket.com/albums/qq32/sbwhart/Wee%20Vertical%20Engine/DSC01630_zpsfc4e4d37.jpg) (http://s431.photobucket.com/user/sbwhart/media/Wee%20Vertical%20Engine/DSC01630_zpsfc4e4d37.jpg.html)

This is it after Liz had fitted it to the engine :)

(http://i431.photobucket.com/albums/qq32/sbwhart/Wee%20Vertical%20Engine/DSC01633_zps28dd7407.jpg) (http://s431.photobucket.com/user/sbwhart/media/Wee%20Vertical%20Engine/DSC01633_zps28dd7407.jpg.html)

Stew
Title: Re: Tiny Vertical Based On G. Britnell's Design
Post by: ImIndoors on December 11, 2014, 11:33:19 AM: Great stuff Stew. As always I'm picking up tips from your build log and full of admiration of this tiny project.
I take that Liz is on the Minnie Mum wage? :clap:
Jim
Title: Re: Tiny Vertical Based On G. Britnell's Design
Post by: micktoon on December 11, 2014, 07:08:52 PM: Cracking post Stew , small engines not really my thing but real good project so I have enjoyed and learnt from it :thumbup: Thanks for posting :clap:

Cheers Mick
Title: Re: Tiny Vertical Based On G. Britnell's Design
Post by: sbwhart on December 12, 2014, 02:26:09 AM: Thanks chaps

Quote from: ImIndoors on December 11, 2014, 11:33:19 AM
I take that Liz is on the Minnie Mum wage? :clap:
Jim

:lol: :lol: :lol: Nice one :thumbup:

Now for the connecting rod:-

A chunk of 10mm brass bar was first roughed out in the spin-indexer.

(http://i431.photobucket.com/albums/qq32/sbwhart/Wee%20Vertical%20Engine/DSC01637_zps93bc9278.jpg) (http://s431.photobucket.com/user/sbwhart/media/Wee%20Vertical%20Engine/DSC01637_zps93bc9278.jpg.html)

Then using a 2mm slot drill mill little end fork and drill.

I also marked the position of the big end split line and the position of the bore with a spotting drill to aid alignment for later ops.

(http://i431.photobucket.com/albums/qq32/sbwhart/Wee%20Vertical%20Engine/DSC01639_zps530ade31.jpg) (http://s431.photobucket.com/user/sbwhart/media/Wee%20Vertical%20Engine/DSC01639_zps530ade31.jpg.html)

The onto the lathe for turning down the middle, and parting off.

(http://i431.photobucket.com/albums/qq32/sbwhart/Wee%20Vertical%20Engine/DSC01646_zps6ff70b2e.jpg) (http://s431.photobucket.com/user/sbwhart/media/Wee%20Vertical%20Engine/DSC01646_zps6ff70b2e.jpg.html)

Gripping it square in a small vice and lining up on the part off pip and the spot marks zero DRO.

(http://i431.photobucket.com/albums/qq32/sbwhart/Wee%20Vertical%20Engine/DSC01649_zps37163cd9.jpg) (http://s431.photobucket.com/user/sbwhart/media/Wee%20Vertical%20Engine/DSC01649_zps37163cd9.jpg.html)

Drill M1 tapping.

(http://i431.photobucket.com/albums/qq32/sbwhart/Wee%20Vertical%20Engine/DSC01652_zpse0e0ef95.jpg) (http://s431.photobucket.com/user/sbwhart/media/Wee%20Vertical%20Engine/DSC01652_zpse0e0ef95.jpg.html)

Cut off the bearing cap again using the spot marks to get position.

(http://i431.photobucket.com/albums/qq32/sbwhart/Wee%20Vertical%20Engine/DSC01653_zpsc6ce185c.jpg) (http://s431.photobucket.com/user/sbwhart/media/Wee%20Vertical%20Engine/DSC01653_zpsc6ce185c.jpg.html)

With the cap cut off tap M1

Then open up cap to M1 clearance 1.2mm

(http://i431.photobucket.com/albums/qq32/sbwhart/Wee%20Vertical%20Engine/DSC01659_zpsd33ade39.jpg) (http://s431.photobucket.com/user/sbwhart/media/Wee%20Vertical%20Engine/DSC01659_zpsd33ade39.jpg.html)

Screw the cap to the rod and set up on centre and drill 2.5mm.

(http://i431.photobucket.com/albums/qq32/sbwhart/Wee%20Vertical%20Engine/DSC01664_zps0b8ffee0.jpg) (http://s431.photobucket.com/user/sbwhart/media/Wee%20Vertical%20Engine/DSC01664_zps0b8ffee0.jpg.html)

Job Done

(http://i431.photobucket.com/albums/qq32/sbwhart/Wee%20Vertical%20Engine/DSC01665_zps28fe45dc.jpg) (http://s431.photobucket.com/user/sbwhart/media/Wee%20Vertical%20Engine/DSC01665_zps28fe45dc.jpg.html)

(http://i431.photobucket.com/albums/qq32/sbwhart/Wee%20Vertical%20Engine/DSC01669_zps2a395b11.jpg) (http://s431.photobucket.com/user/sbwhart/media/Wee%20Vertical%20Engine/DSC01669_zps2a395b11.jpg.html)

Stew
Title: Re: Tiny Vertical Based On G. Britnell's Design
Post by: steampunkpete on December 12, 2014, 08:27:48 AM: Sir, I've just put my hat on so that I can take it off to you. You have made a lovely thing. :beer:
Title: Re: Tiny Vertical Based On G. Britnell's Design
Post by: sbwhart on December 14, 2014, 07:52:53 AM: Cheers guys.

On with the eccentric:- as the engine will have reversing linkage the eccentric will have a double throw, it took me a while to get my head around George's method I also complicated things a little in changing his design half way through only to find that if I carried on I would not be able to assemble the arms so I had to start again, any way this is the sequence.

First make an off centre bush with a 1mm throw by packing out one of the chuck jaws.

(http://i431.photobucket.com/albums/qq32/sbwhart/Wee%20Vertical%20Engine/DSC01680_zps321c0352.jpg) (http://s431.photobucket.com/user/sbwhart/media/Wee%20Vertical%20Engine/DSC01680_zps321c0352.jpg.html)

The bush was drilled and tap to take a M3 grub screws.

Then on the 3/8 bar that the part will be made on mill a couple of flats 132 deg apart from each other using the spin indexer

(http://i431.photobucket.com/albums/qq32/sbwhart/Wee%20Vertical%20Engine/DSC01682_zps174cda61.jpg) (http://s431.photobucket.com/user/sbwhart/media/Wee%20Vertical%20Engine/DSC01682_zps174cda61.jpg.html)

Then in the lathe turn the little boss and drill 2.5mm

(http://i431.photobucket.com/albums/qq32/sbwhart/Wee%20Vertical%20Engine/DSC01684_zps53590bb6.jpg) (http://s431.photobucket.com/user/sbwhart/media/Wee%20Vertical%20Engine/DSC01684_zps53590bb6.jpg.html)

Then mount the bar in the off centred bush using a grub screw with a flat bottom so that the bar is pulled up level when it tightened up.

Turn up the first throw 6mm dia.

(http://i431.photobucket.com/albums/qq32/sbwhart/Wee%20Vertical%20Engine/DSC01688_zps5a31b97e.jpg) (http://s431.photobucket.com/user/sbwhart/media/Wee%20Vertical%20Engine/DSC01688_zps5a31b97e.jpg.html)

Then mount the bar locating on the second flat, and using a part off tool as the the first throw will get in the way, turn down the second throw to 6mm

(http://i431.photobucket.com/albums/qq32/sbwhart/Wee%20Vertical%20Engine/DSC01691_zps3a435b55.jpg) (http://s431.photobucket.com/user/sbwhart/media/Wee%20Vertical%20Engine/DSC01691_zps3a435b55.jpg.html)

Then over onto the mill and drill and tap M 1.6 for the eccentric clamp screw.

(http://i431.photobucket.com/albums/qq32/sbwhart/Wee%20Vertical%20Engine/DSC01693_zps2253892c.jpg) (http://s431.photobucket.com/user/sbwhart/media/Wee%20Vertical%20Engine/DSC01693_zps2253892c.jpg.html)

Back onto the lathe and part off

That's it Job Done.

(http://i431.photobucket.com/albums/qq32/sbwhart/Wee%20Vertical%20Engine/DSC01700_zpsf995bd29.jpg) (http://s431.photobucket.com/user/sbwhart/media/Wee%20Vertical%20Engine/DSC01700_zpsf995bd29.jpg.html)

(http://i431.photobucket.com/albums/qq32/sbwhart/Wee%20Vertical%20Engine/DSC01698_zpsaa7cc410.jpg) (http://s431.photobucket.com/user/sbwhart/media/Wee%20Vertical%20Engine/DSC01698_zpsaa7cc410.jpg.html)

Stew
Title: Re: Tiny Vertical Based On G. Britnell's Design
Post by: sbwhart on December 17, 2014, 07:55:25 AM: We're really getting down to working with 2/10 of bugger all now :)

Eccentric straps

I know it getting a little repetitive when I say in the spin-indexer but this is really the best way I can think of for holding these small parts.

So first up In the spin-indexer machine up a blank to make both straps back to back.

(http://i431.photobucket.com/albums/qq32/sbwhart/Wee%20Vertical%20Engine/DSC01702_zpsd714c7cb.jpg) (http://s431.photobucket.com/user/sbwhart/media/Wee%20Vertical%20Engine/DSC01702_zpsd714c7cb.jpg.html)

Then drill the holes in position and to the required size.

(http://i431.photobucket.com/albums/qq32/sbwhart/Wee%20Vertical%20Engine/DSC01704_zps7328fb16.jpg) (http://s431.photobucket.com/user/sbwhart/media/Wee%20Vertical%20Engine/DSC01704_zps7328fb16.jpg.html)

Then mill to shape

(http://i431.photobucket.com/albums/qq32/sbwhart/Wee%20Vertical%20Engine/DSC01707_zpsae06d4dd.jpg) (http://s431.photobucket.com/user/sbwhart/media/Wee%20Vertical%20Engine/DSC01707_zpsae06d4dd.jpg.html)

Mill the fork end with a 1mm slot drill:- yes I did say a 1mm slot drill I bought a couple of good quality Hertel drill they cut beautifully didn't break any at all.

(http://i431.photobucket.com/albums/qq32/sbwhart/Wee%20Vertical%20Engine/DSC01711_zps008ea905.jpg) (http://s431.photobucket.com/user/sbwhart/media/Wee%20Vertical%20Engine/DSC01711_zps008ea905.jpg.html)

Then slit them down the middle to form the two straps and cut them off the bar with a hacksaw

(http://i431.photobucket.com/albums/qq32/sbwhart/Wee%20Vertical%20Engine/DSC01716_zps52d1424d.jpg) (http://s431.photobucket.com/user/sbwhart/media/Wee%20Vertical%20Engine/DSC01716_zps52d1424d.jpg.html)

Mill them to final thickness

(http://i431.photobucket.com/albums/qq32/sbwhart/Wee%20Vertical%20Engine/DSC01717_zps81a4999d.jpg) (http://s431.photobucket.com/user/sbwhart/media/Wee%20Vertical%20Engine/DSC01717_zps81a4999d.jpg.html)

Mounted them on a mandrel to form the back.

(http://i431.photobucket.com/albums/qq32/sbwhart/Wee%20Vertical%20Engine/DSC01719_zps206b62e4.jpg) (http://s431.photobucket.com/user/sbwhart/media/Wee%20Vertical%20Engine/DSC01719_zps206b62e4.jpg.html)

Then filed the rad and tidied off the burrs

(http://i431.photobucket.com/albums/qq32/sbwhart/Wee%20Vertical%20Engine/DSC01722_zps206b62e4.jpg) (http://s431.photobucket.com/user/sbwhart/media/Wee%20Vertical%20Engine/DSC01722_zps206b62e4.jpg.html)

That's it job done

(http://i431.photobucket.com/albums/qq32/sbwhart/Wee%20Vertical%20Engine/DSC01725_zpsf486c3e7.jpg) (http://s431.photobucket.com/user/sbwhart/media/Wee%20Vertical%20Engine/DSC01725_zpsf486c3e7.jpg.html)

(http://i431.photobucket.com/albums/qq32/sbwhart/Wee%20Vertical%20Engine/DSC01728_zpsce39e906.jpg) (http://s431.photobucket.com/user/sbwhart/media/Wee%20Vertical%20Engine/DSC01728_zpsce39e906.jpg.html)

Cheers

Stew
Title: Re: Tiny Vertical Based On G. Britnell's Design
Post by: sbwhart on December 18, 2014, 10:45:22 AM: Managed to get another bit made today in between baby sitting my 2 yr old grandson. :Director:

The quadrant link

Mounted a bit of thin mild steel plate to the rotary table that I had centred under the mill, then drill out the holes where required.

(http://i431.photobucket.com/albums/qq32/sbwhart/Wee%20Vertical%20Engine/DSC01731_zpse06b20f4.jpg) (http://s431.photobucket.com/user/sbwhart/media/Wee%20Vertical%20Engine/DSC01731_zpse06b20f4.jpg.html)

Then with the 1mm slot drill mill the radius slot and the outside profile.

(http://i431.photobucket.com/albums/qq32/sbwhart/Wee%20Vertical%20Engine/DSC01734_zps33067d72.jpg) (http://s431.photobucket.com/user/sbwhart/media/Wee%20Vertical%20Engine/DSC01734_zps33067d72.jpg.html)

Then it was just a matter of gently filing the rest of the profile.

(http://i431.photobucket.com/albums/qq32/sbwhart/Wee%20Vertical%20Engine/DSC01735_zps63dd69c3.jpg) (http://s431.photobucket.com/user/sbwhart/media/Wee%20Vertical%20Engine/DSC01735_zps63dd69c3.jpg.html)

(http://i431.photobucket.com/albums/qq32/sbwhart/Wee%20Vertical%20Engine/DSC01737_zps1d7d5fe6.jpg) (http://s431.photobucket.com/user/sbwhart/media/Wee%20Vertical%20Engine/DSC01737_zps1d7d5fe6.jpg.html)

Stew

IS THERE ANY ONE OUT THERE :wack:
Title: Re: Tiny Vertical Based On G. Britnell's Design
Post by: Joules on December 18, 2014, 11:17:20 AM: You bet, with open mouth awe :drool:
Title: Re: Tiny Vertical Based On G. Britnell's Design
Post by: awemawson on December 18, 2014, 11:21:36 AM: Oh yes - watching avidly :thumbup:
Title: Re: Tiny Vertical Based On G. Britnell's Design
Post by: Manxmodder on December 18, 2014, 02:39:41 PM: We're all lost for words :jaw: :clap: :clap:

I notice that Liz seems to be doing all the donkey work recently,has Jack been promoted to the hydraulics dept?......OZ.
Title: Re: Tiny Vertical Based On G. Britnell's Design
Post by: vtsteam on December 18, 2014, 05:53:42 PM: Quote from: sbwhart on December 18, 2014, 10:45:22 AM
IS THERE ANY ONE OUT THERE :wack:

No. :coffee:
Title: Re: Tiny Vertical Based On G. Britnell's Design
Post by: sbwhart on December 21, 2014, 03:44:30 AM: Quote from: Manxmodder on December 18, 2014, 02:39:41 PM
We're all lost for words :jaw: :clap: :clap:

I notice that Liz seems to be doing all the donkey work recently,has Jack been promoted to the hydraulics dept?......OZ.
Quote from: awemawson on December 18, 2014, 11:21:36 AM
Oh yes - watching avidly :thumbup:
Quote from: vtsteam on December 18, 2014, 05:53:42 PM
Quote from: sbwhart on December 18, 2014, 10:45:22 AM
IS THERE ANY ONE OUT THERE :wack:

No. :coffee:

Quote from: Joules on December 18, 2014, 11:17:20 AM
You bet, with open mouth awe :drool:

Phew that's a relief I was beginning to think every one had been abducted by aliens from the planet lurker

:borg: :borg: :borg: :borg:

:D

Thanks for checking in Chaps

Got few more bits made:- reversing arm:- first I drilled the holes in the required position then filed it roughly to shape, for the handle which is silver soldered to the arm I first cut a 1mm slot in a short piece of bar and then roughed the handle out.

(http://i431.photobucket.com/albums/qq32/sbwhart/Wee%20Vertical%20Engine/DSC01741_zps416042f7.jpg) (http://s431.photobucket.com/user/sbwhart/media/Wee%20Vertical%20Engine/DSC01741_zps416042f7.jpg.html)

Then silver solder the arm to it, this pic doesn't look nice but it got potential.

(http://i431.photobucket.com/albums/qq32/sbwhart/Wee%20Vertical%20Engine/DSC01743_zpsd5afc48f.jpg) (http://s431.photobucket.com/user/sbwhart/media/Wee%20Vertical%20Engine/DSC01743_zpsd5afc48f.jpg.html)

Then back onto the lathe and finished it off.

(http://i431.photobucket.com/albums/qq32/sbwhart/Wee%20Vertical%20Engine/DSC01745_zpsecf6796f.jpg) (http://s431.photobucket.com/user/sbwhart/media/Wee%20Vertical%20Engine/DSC01745_zpsecf6796f.jpg.html)

Then the little bracket that hold the arm. Using the now well tried spin indexer method first cut a 1mm slot.

(http://i431.photobucket.com/albums/qq32/sbwhart/Wee%20Vertical%20Engine/DSC01747_zpsd29b58c2.jpg) (http://s431.photobucket.com/user/sbwhart/media/Wee%20Vertical%20Engine/DSC01747_zpsd29b58c2.jpg.html)

Then using the indexer to manipulate things mill is to shape and drill holes where required.

(http://i431.photobucket.com/albums/qq32/sbwhart/Wee%20Vertical%20Engine/DSC01748_zpsa2eb0c11.jpg) (http://s431.photobucket.com/user/sbwhart/media/Wee%20Vertical%20Engine/DSC01748_zpsa2eb0c11.jpg.html)

Cut it from the bar and tidy up with some needle files.

Next up the two links:- drill two 1mm holes 11mm apart then with a couple of short lengths of 1mm bar (I used the off cuts from the slotted screws) in the holes resting across the jaws of a small vice mill to width the result is a nice neat link.

(http://i431.photobucket.com/albums/qq32/sbwhart/Wee%20Vertical%20Engine/DSC01752_zps03c3cc4f.jpg) (http://s431.photobucket.com/user/sbwhart/media/Wee%20Vertical%20Engine/DSC01752_zps03c3cc4f.jpg.html)

Her's a group shot

(http://i431.photobucket.com/albums/qq32/sbwhart/Wee%20Vertical%20Engine/DSC01756_zpsb01f5618.jpg) (http://s431.photobucket.com/user/sbwhart/media/Wee%20Vertical%20Engine/DSC01756_zpsb01f5618.jpg.html)

I've been getting paranoid about losing one of these tiny beasts to I've started to wire them together.

(http://i431.photobucket.com/albums/qq32/sbwhart/Wee%20Vertical%20Engine/DSC01757_zps0bd97270.jpg) (http://s431.photobucket.com/user/sbwhart/media/Wee%20Vertical%20Engine/DSC01757_zps0bd97270.jpg.html)

Cheers

Stew
Title: Re: Tiny Vertical Based On G. Britnell's Design
Post by: angus on December 21, 2014, 04:13:16 AM: wow!
Title: Re: Tiny Vertical Based On G. Britnell's Design
Post by: vtsteam on December 21, 2014, 02:43:12 PM: I especially love the tiny little handle!

I know there's a scale in one of the pictures, but it's still hard to imagine how small these look in real life, because they look more like life size pieces.

:thumbup: :bow:
Title: Re: Tiny Vertical Based On G. Britnell's Design
Post by: DavidA on December 24, 2014, 05:05:44 PM: The smallest I am going to come across is the valve gear on my 3.5 inch guage Fowler 4f. And that is huge compared to this stuff.

I find it very inspirational.

Dave.
Title: Re: Tiny Vertical Based On G. Britnell's Design
Post by: Meldonmech on December 28, 2014, 03:47:31 AM: Coming on very nicely Stew

Cheers David
Title: Re: Tiny Vertical Based On G. Britnell's Design
Post by: Stilldrillin on December 28, 2014, 03:59:03 AM: By, 'ek, Stew! :bugeye:

:clap: :clap: :thumbup:

David D
Title: Re: Tiny Vertical Based On G. Britnell's Design
Post by: sbwhart on December 29, 2014, 12:03:07 PM: Thanks for your interest and comments Chaps

Just a short update not a lot of progress over the festive season:- Hope you all had a good one.

The parts are getting smaller and more tricky to make, I thought I'd met my limit with the small spacers for the reversing gear they have a 1mm bore and are 2mm dia and are 1.25 thick or .3 thick depending where they are assembled, the trouble was with my thinnest 1/16" parting tool it just had a too big of a pressure front causing the bar to bend, then my weird brain kicked into over drive, I have this strange knack of seeing or reading about something and filing it away in the "that may be useful one day draw", and retrieving it years later. I recollect reading some ware, I think it may have been one of Georges post of using a thin slitting saw as a parting tool for small parts. I have a fair collection of thin slitting saws so it was a quick rummage in the scrap box and produced this strange looking thing.

(http://i431.photobucket.com/albums/qq32/sbwhart/Wee%20Vertical%20Engine/DSC01769_zps6537ffb4.jpg) (http://s431.photobucket.com/user/sbwhart/media/Wee%20Vertical%20Engine/DSC01769_zps6537ffb4.jpg.html)

(http://i431.photobucket.com/albums/qq32/sbwhart/Wee%20Vertical%20Engine/DSC01771_zps1d980752.jpg) (http://s431.photobucket.com/user/sbwhart/media/Wee%20Vertical%20Engine/DSC01771_zps1d980752.jpg.html)

What you are doing is using a single tooth as the parting blade the one I'm using is .3mm thick as it blunts you just index it round to start on a new sharp tooth

Worked like a dream.

(http://i431.photobucket.com/albums/qq32/sbwhart/Wee%20Vertical%20Engine/DSC01768_zps41d11238.jpg) (http://s431.photobucket.com/user/sbwhart/media/Wee%20Vertical%20Engine/DSC01768_zps41d11238.jpg.html)

(http://i431.photobucket.com/albums/qq32/sbwhart/Wee%20Vertical%20Engine/DSC01765_zpsfe57b96d.jpg) (http://s431.photobucket.com/user/sbwhart/media/Wee%20Vertical%20Engine/DSC01765_zpsfe57b96d.jpg.html)

Cheers

Stew
Title: Re: Tiny Vertical Based On G. Britnell's Design
Post by: vtsteam on December 29, 2014, 01:13:54 PM: Filed away, likewise, now! :clap: :beer:
Title: Re: Tiny Vertical Based On G. Britnell's Design
Post by: Meldonmech on December 29, 2014, 01:55:51 PM: Hi Stew, like your use of slitting saws for parting off. I have quite a number these saws, and now must make an appropriate
tool holder. Some are 1" bore and some smaller around 5/8" bore, down to about 1/4". The smallest threads I have cut, male and female have been 12 BA with only finger pressure being required .

Small machining is a different world hope my eyes last out.

Cheers David
Title: Re: Tiny Vertical Based On G. Britnell's Design
Post by: Will_D on December 29, 2014, 02:22:44 PM: I have always had a lust for a tool post grinder!

Not going to happen tho'

Thoughts are now moving to mount a dremmel/proxxon or similar on the tool post and use that as a high speed grinder (for SMALL jobs)

For you application you could just mount a cut-off disc or small saw blade?
Title: Re: Tiny Vertical Based On G. Britnell's Design
Post by: Stilldrillin on December 29, 2014, 05:22:32 PM: Thanks Stew!

That's a crackin' idea, for the unused slitting saws in my toolbox....... :thumbup:

David D
Title: Re: Tiny Vertical Based On G. Britnell's Design
Post by: sbwhart on January 09, 2015, 07:20:55 AM: Thanks Chaps

Thing have been a bit slow on the shed front over the last couple of weeks, but over the last couple of days I've been easing myself back in :hammer:

Progress on the engine has also been difficult as I've really struggled to make the small M1 pins for the reversing mechanism, the problem was actually turning the bar down to 1mm over the length required and getting the die to pick up and cut a clean thread, when I did get the bar turned the die refused to cut and all I got was a grossly under size thread that the nut wouldn't hold onto.

The answer was to use my thin bar moving steady once I got it set up it worked really well, with that bit sorted the getting the die to cut a good thread was relatively straight forward all I did is turn the part over length as I discovered it was the first start of the thread that was under size all I had to do was cut the thread then cut off the under size bit.

This is the steady in action

(http://i431.photobucket.com/albums/qq32/sbwhart/Wee%20Vertical%20Engine/DSC01773_zpsf5caaae2.jpg) (http://s431.photobucket.com/user/sbwhart/media/Wee%20Vertical%20Engine/DSC01773_zpsf5caaae2.jpg.html)

The piston valve is experiment part of the design I figured that it would be easier to make than the slide valve, its a simple fabrication from a bit of 1mm brass bar threaded M1 a couple of lock nuts a couple of 3mm*1mm thick washers threaded M1 and a 2mm spacer.

(http://i431.photobucket.com/albums/qq32/sbwhart/Wee%20Vertical%20Engine/DSC01781_zps6ab58559.jpg) (http://s431.photobucket.com/user/sbwhart/media/Wee%20Vertical%20Engine/DSC01781_zps6ab58559.jpg.html)

(http://i431.photobucket.com/albums/qq32/sbwhart/Wee%20Vertical%20Engine/DSC01777_zpsfce3f5c0.jpg) (http://s431.photobucket.com/user/sbwhart/media/Wee%20Vertical%20Engine/DSC01777_zpsfce3f5c0.jpg.html)

Just got the valve guide and the air intake to make, then I've got to figure out how to set the valve events.

Thanks for watching

Stew
Title: Re: Tiny Vertical Based On G. Britnell's Design
Post by: greenie on January 09, 2015, 07:56:55 AM: No need to try and make that brass bar/rod,-------- for 0.040 inch, or, 1-00mm solid brass bar that's made for threading, it is available quite readily. :doh:

http://www.specialshapes.com/roundsolbars.html

regards greenie
Title: Re: Tiny Vertical Based On G. Britnell's Design
Post by: awemawson on January 09, 2015, 09:38:40 AM: Long way to Chicago though from Cheshire :lol:
Title: Re: Tiny Vertical Based On G. Britnell's Design
Post by: vtsteam on January 09, 2015, 12:03:25 PM: That's looking great, man!

And congrats on solving a really difficult machining problem. :beer:
Title: Re: Tiny Vertical Based On G. Britnell's Design
Post by: Stilldrillin on January 09, 2015, 01:57:29 PM: Nicely, neatly, tinily done, Stew! :clap: :clap:

That's cute! :thumbup:

David D
Title: Re: Tiny Vertical Based On G. Britnell's Design
Post by: greenie on January 09, 2015, 04:58:23 PM: Quote from: awemawson on January 09, 2015, 09:38:40 AM
Long way to Chicago though from Cheshire :lol:

Ah-ha, but you can find it in many hobby shops, possibly one might even be close to you. :Doh:

regards greenie
Title: Re: Tiny Vertical Based On G. Britnell's Design
Post by: Ginger Nut on January 09, 2015, 07:10:28 PM: :bugeye: Ok I get it its really an over sized Lego man just used to make it look small :doh:

What a wonderful piece of inspirational work. :thumbup:
Title: Re: Tiny Vertical Based On G. Britnell's Design
Post by: sbwhart on January 10, 2015, 03:51:16 AM: Quote from: greenie on January 09, 2015, 07:56:55 AM

No need to try and make that brass bar/rod,-------- for 0.040 inch, or, 1-00mm solid brass bar that's made for threading, it is available quite readily. :doh:

http://www.specialshapes.com/roundsolbars.html

regards greenie

That's what I did for the valve rod but the bolts are headed so you have no option but to turn them down.

Quote from: Ginger Nut on January 09, 2015, 07:10:28 PM
:bugeye: Ok I get it its really an over sized Lego man just used to make it look small :doh:

What a wonderful piece of inspirational work. :thumbup:

Its not a Lego man its a Lego Woman:- look at the hair.

:D :D :D :D

Thanks for your kind comments and interest Chaps

Stew
Title: Re: Tiny Vertical Based On G. Britnell's Design
Post by: greenie on January 10, 2015, 06:39:50 AM: Quote from: sbwhart on January 10, 2015, 03:51:16 AM

That's what I did for the valve rod but the bolts are headed so you have no option but to turn them down.

Stew

If you have to do lot's of small diameter screws/bolts and you reckon that brass is the way to go, then here's another cheaper option than buying brass rod.

Have a look at "Bronzing Rods" as a source of material instead of brass, it's cheaper and far stronger when making the smaller size diameters screws, if you have to turn them.
Threading with a die is no problem either and where brass will try and break of, if you are making a long thread, then bronze rods have the strength and do not break anywhere near as easily as what brass breaks.

Try using it for all your small bolts/screws and you'll be amazed at how strong it is and easy to use.

regards greenie
Title: Re: Tiny Vertical Based On G. Britnell's Design
Post by: sbwhart on January 10, 2015, 08:27:18 AM: Quote from: greenie on January 10, 2015, 06:39:50 AM
Quote from: sbwhart on January 10, 2015, 03:51:16 AM

That's what I did for the valve rod but the bolts are headed so you have no option but to turn them down.

Stew

If you have to do lot's of small diameter screws/bolts and you reckon that brass is the way to go, then here's another cheaper option than buying brass rod.

Have a look at "Bronzing Rods" as a source of material instead of brass, it's cheaper and far stronger when making the smaller size diameters screws, if you have to turn them.
Threading with a die is no problem either and where brass will try and break of, if you are making a long thread, then bronze rods have the strength and do not break anywhere near as easily as what brass breaks.

Try using it for all your small bolts/screws and you'll be amazed at how strong it is and easy to use.

regards greenie

Thanks for the tip greenie I've just ordered some off ebay

I must admit I'm having a real problems cutting the M1 thread in these little bolts the first lot I made I made from an old bicycle spoke I had problems with the die ripping the thread the nut only just gets an hold in fact the nuts are dropping off, I've just made some more from stainless steel S303 I was thinking this would be better than the spoke, but again no go, the die I used cut a clean thread on some brass rod but I do have another die that I can try.

I've just got my engineering books out and checked out the major/minor diameters of the nuts and bolts of these little buggers and to be honest there isn't much to play with.

Any suggestions from you guys would be greatly appreciated.

Stew
Title: Re: Tiny Vertical Based On G. Britnell's Design
Post by: vtsteam on January 10, 2015, 01:04:31 PM: I'm wondering, Stewart, if the brass-suitable dies have the same reduced cutting angle that we put on drills and lathe tools for brass? And if so wouldn't that make it hard to cut ferrous metal? Dunno, myself.

edit:
Don't know if this applies at all, but I've been digging through my books, and this caught my eye (from 1924 popular Mechanics book on drilling and thread cutting).
Title: Re: Tiny Vertical Based On G. Britnell's Design
Post by: greenie on January 10, 2015, 03:50:54 PM: Quote from: sbwhart on January 10, 2015, 08:27:18 AM

Thanks for the tip greenie I've just ordered some off ebay

I must admit I'm having a real problems cutting the M1 thread in these little bolts the first lot I made I made from an old bicycle spoke I had problems with the die ripping the thread the nut only just gets an hold in fact the nuts are dropping off, I've just made some more from stainless steel S303 I was thinking this would be better than the spoke, but again no go, the die I used cut a clean thread on some brass rod but I do have another die that I can try.

I've just got my engineering books out and checked out the major/minor diameters of the nuts and bolts of these little buggers and to be honest there isn't much to play with.

Any suggestions from you guys would be greatly appreciated.

Stew

A possibility with the spoke material and the ripping threads, is the quality of the material - like what grade of steel is the material that the spokes are made from ?

There are two cutting edges on a die as well, one side allows the thread to be formed as a taper, the other side is for cutting up to a shoulder, be careful of which side your trying to cut any hard material with.
Have a real close look at the die your using and check out which side is what. Normally the side that has the brand on it, is the 'starting side', BUT, I have other dies that prove that wrong as well.
It all depends on the maker of the die too, the old theory of - "you only gets what you pays for " - is sure going to rear it's ugly head about now.

As for the die cutting too small a thread, what you need is a split die, with these you can push/jamb a piece of ‘whatever’ into the split and force the die cutting edges apart. This will be a bit of a ‘suck it and see’ until you get it just right. What I used was a bit of brass and filed a long slow taper onto it, then tapped it in to the split on the die, cut a thread and tested it with a home made nut, kept tapping this bit of tapered brass into the split and testing, until the thread was just right.
I have cut thousands of 10 BA, 12 BA and 14 BA threads, using the bronzing rod as the preferred material for making miniature coach bolts, using the appropriately sized dies for many years, it's them little bleedin' skinny taps that cost the money, when they roll of the bench and break as they hit the floor. :palm:

Others will have their own 'special tricks dept' for working with stuff that is a bit on the small side, possibly somebody could add some more.

regards greenie
Title: Re: Tiny Vertical Based On G. Britnell's Design
Post by: sbwhart on January 11, 2015, 03:14:48 AM: Thanks for your suggestions Chaps

The die I've been using is from a set of small taps and die that are readily available the dies are not of the split type so I guess they are more like a die nut, its hard to tell even with a strong glass what the cutting angle is and on what size of the die gives the correct lead in, but swapping it round is certainly worth trying. In the mean die I've ordered a split die of eaby, I gave myself a freight when I looked up the cost of dies from a UK trade supplier they ranged from £65 to £90 each :- OUCH.

Strangely enough the spoke material turned up nice better than the 303 even, I figured that for its application it would have to be good quality stuff, and spokes are threaded:- so it points to the problem being with the die.

Cheers and thanks again

Stew
Title: Re: Tiny Vertical Based On G. Britnell's Design
Post by: Pete W. on January 11, 2015, 09:16:28 AM: Hi there, Stew,

Regarding threaded spokes - if you're talking about bicycle spokes, I believe the threads are rolled rather than cut.
Title: Re: Tiny Vertical Based On G. Britnell's Design
Post by: Manxmodder on January 11, 2015, 10:36:57 AM: Hi Stew, you've done some absolutely amazing work on this little engine :bow:

On the threading subject I can second what Pete W is suggesting about spoke threads being rolled. They are done that way because the rolled thread is stronger than a cut one.

In amongst a recent haul of tools I was given there are a couple of old spoke thread rollers and various roll dies,though they have all seen better days.

Below I have linked a YouTube video of a spoke being thread rolled on a Cyclo brand rolling device,these small rollers may be really useful for some of you chaps doing miniature threads.

Hope this helps......OZ.
Title: Re: Tiny Vertical Based On G. Britnell's Design
Post by: chipenter on January 11, 2015, 02:46:08 PM: Iff the set is the same as mine http://www.arceurotrade.co.uk/Catalogue/Cutting-Tools/Tap-Die-Sets with a custom tailstock die holder I still need to start on a taper .
Title: Re: Tiny Vertical Based On G. Britnell's Design
Post by: sbwhart on January 14, 2015, 11:31:47 AM: Thanks for all your help chaps

Quote from: chipenter on January 11, 2015, 02:46:08 PM
Iff the set is the same as mine http://www.arceurotrade.co.uk/Catalogue/Cutting-Tools/Tap-Die-Sets with a custom tailstock die holder I still need to start on a taper .

Yes that's the set I have

I remember that I'd passed onto my wife a small pocket microscope I had for here to use in her science classes to look at creepy crawlies, and I asked her of she still had it and she had.

(http://i431.photobucket.com/albums/qq32/sbwhart/Wee%20Vertical%20Engine/DSC01851_zps6025b009.jpg) (http://s431.photobucket.com/user/sbwhart/media/Wee%20Vertical%20Engine/DSC01851_zps6025b009.jpg.html)

Used it to look at a commercial thread along with one I had cut and they looked the same nice and clean so the problem is not the die, tried the new nuts and they seem to fit better.

On the down side I took deliver of the cheep split die, one look at it and could see loads of burs on the back side and even around the holes for the pinch screws so it doesn't indicate that it had been made with care, Just for a try I ran one of the commercial screws part way down it a took a look under the microscope and it had truncated and torn the thread, so I think its a no no.

I've made the last couple of parts the valve guide and the air feed.

(http://i431.photobucket.com/albums/qq32/sbwhart/Wee%20Vertical%20Engine/DSC01842_zps476d3722.jpg) (http://s431.photobucket.com/user/sbwhart/media/Wee%20Vertical%20Engine/DSC01842_zps476d3722.jpg.html)

(http://i431.photobucket.com/albums/qq32/sbwhart/Wee%20Vertical%20Engine/DSC01846_zpseba8a911.jpg) (http://s431.photobucket.com/user/sbwhart/media/Wee%20Vertical%20Engine/DSC01846_zpseba8a911.jpg.html)

(http://i431.photobucket.com/albums/qq32/sbwhart/Wee%20Vertical%20Engine/DSC01847_zpsf98bd18b.jpg) (http://s431.photobucket.com/user/sbwhart/media/Wee%20Vertical%20Engine/DSC01847_zpsf98bd18b.jpg.html)

(http://i431.photobucket.com/albums/qq32/sbwhart/Wee%20Vertical%20Engine/DSC01849_zpsa52a6227.jpg) (http://s431.photobucket.com/user/sbwhart/media/Wee%20Vertical%20Engine/DSC01849_zpsa52a6227.jpg.html)

I've assembled everything but I still need to do a fair bit of fettling before I can try it on air to stop things catching and to set the valve events, and I think I will change the design of the piston valve to allow for a larger diameter stem:- I'm not giving up yet.

Stew
Title: Re: Tiny Vertical Based On G. Britnell's Design
Post by: vtsteam on January 14, 2015, 12:52:20 PM: Nice! :thumbup:
Title: Re: Tiny Vertical Based On G. Britnell's Design
Post by: sbwhart on January 16, 2015, 08:04:11 AM: The trouble with the valve stem was that I had made it from 1mm brass rod and it just wasn't up to the job it kept bending, so I remade it from 2mm stainless rod, and with the fabricated piston valve screwed to it.

(http://i431.photobucket.com/albums/qq32/sbwhart/Wee%20Vertical%20Engine/DSC01852_zpsbf52c65d.jpg) (http://s431.photobucket.com/user/sbwhart/media/Wee%20Vertical%20Engine/DSC01852_zpsbf52c65d.jpg.html)

That seems to have stiffened thing up a lot better, I've got all the bits made now I've turned it over by hand and its not too bad a little bit of fettling her and there is required, but I still have to figure out how to set the timing I have a few ideas about that, this job is all about patience and having an extensive vocabulary of Anglo Saxon swear words.

(http://i431.photobucket.com/albums/qq32/sbwhart/Wee%20Vertical%20Engine/DSC01854_zpsb460b8d5.jpg) (http://s431.photobucket.com/user/sbwhart/media/Wee%20Vertical%20Engine/DSC01854_zpsb460b8d5.jpg.html)

The screw problem seems to be sorted the new nuts helps a lot.

Stew
Title: Re: Tiny Vertical Based On G. Britnell's Design
Post by: sbwhart on January 24, 2015, 11:10:22 AM: I'd thought I'd give you an update on this little beast.

I've been slowly working on it over the last week fettling this and that:- as you do, I made a new eccentric as I wasn't getting the valve travel I required, to make sure I got the throw correct I used the mill to get the off set in the jig instead of the packing method on the chuck jaw this gave me exactly the 1mm throw I wanted, but I'm only getting about 1.4mm valve travel, the best run I can get out of it is about a 3sec run in one direction only. I think I'm losing the valve travel to play in the linkage, so I'm going to have a look next week to see if I can take some of the play out with new pins a closer fit to the holes.

Stew
Title: Re: Tiny Vertical Based On G. Britnell's Design
Post by: Stilldrillin on January 24, 2015, 03:19:57 PM: Stew.

Sounds like your little bit of clearances, are getting in the road........ :lol:

Good luck, with the tightening process! :thumbup:

David D
Title: Re: Tiny Vertical Based On G. Britnell's Design
Post by: sbwhart on January 25, 2015, 03:24:22 AM: :lol: :lol: :lol:

Yes its a case of too much clearance getting in the way.

I think I failed to appreciate the small size effect on clearance:- 0.1mm clearance on a 10mm shaft is 1% but 0.1mm clearance on a 1mm shaft is 10% magnify that by each bit of linkage and you lose a lot of movement.

:doh:

Still it keeps the old grey cells working.

I've just got to get a bit more precision into the job :hammer:

Stew
Title: Re: Tiny Vertical Based On G. Britnell's Design
Post by: Stilldrillin on January 25, 2015, 04:14:10 AM: Quote from: sbwhart on January 25, 2015, 03:24:22 AM
I've just got to get a bit more precision into the job :hammer:

Nah!

Just remod, the modded cam. To give 1.5mm throw......... :thumbup:

David D
Title: Re: Tiny Vertical Based On G. Britnell's Design
Post by: sbwhart on January 25, 2015, 07:49:35 AM: Quote from: Stilldrillin on January 25, 2015, 04:14:10 AM
Quote from: sbwhart on January 25, 2015, 03:24:22 AM
I've just got to get a bit more precision into the job :hammer:

Nah!

Just remod, the modded cam. To give 1.5mm throw......... :thumbup:

David D

That's Plan B and eccentric eccentric

:D

HE HE HE don't need plan B

Made some closer fitting pins and took out a fouling point on the linkage.

That's got it sorted, you need to keep your finger on the handle but I can sort that and it runs in both direction.

:nrocks: :nrocks: :nrocks:

:ddb: :ddb: :ddb: :ddb:

:headbang:

I'm a little chuffed at that

Stew
Title: Re: Tiny Vertical Based On G. Britnell's Design
Post by: RussellT on January 25, 2015, 07:58:35 AM: Tht's nice. :clap:

Russell
Title: Re: Tiny Vertical Based On G. Britnell's Design
Post by: Stilldrillin on January 25, 2015, 08:20:43 AM: WOW!! :bugeye:

That's a little cracker, Stew! :thumbup:

Blummin, well done! :clap: :clap:

David D
Title: Re: Tiny Vertical Based On G. Britnell's Design
Post by: vtsteam on January 25, 2015, 10:01:00 AM: Wonderful work! :thumbup: :thumbup: :clap: :clap:
Title: Re: Tiny Vertical Based On G. Britnell's Design
Post by: mexican jon on January 25, 2015, 10:17:20 AM: Brilliant :thumbup: Well done that man :headbang: :headbang:
Title: Re: Tiny Vertical Based On G. Britnell's Design
Post by: modeldozer on January 25, 2015, 05:56:59 PM: Well done. :clap: :clap: :clap: :bow:
:beer:
Abraham
Title: Re: Tiny Vertical Based On G. Britnell's Design
Post by: sbwhart on January 29, 2015, 11:33:58 AM: Thanks for your interest and comments lads

I've been doing a fair bit of tinkering with it this last week as I wasn't getting a consistent running out of it, I tweak this and that, then I thought I wonder if it will run without the valve guide as its not really doing anything and it was tightening things up so I took it off and wow what a change. What with all my tinkering I'd broken off some of the M1 screws in the valve chest :cussing: so I decided to make a new one with no provision for the guide and with a M2.5 inlet port instead of the flange inlet arrangement I was using.

So heir's a video of the improved run, I didn't check the RPM as the battery on my taco was flat, I'll check that tomorrow and get back to you on its speed.

Now that I'm happy with how it runs:- I'm going to add a bit of Glam.

For this I've made a tiny stop valve that I will plumb into the wooden base.

(http://i431.photobucket.com/albums/qq32/sbwhart/Wee%20Vertical%20Engine/DSC01867_zpsbmoeqyyj.jpg) (http://s431.photobucket.com/user/sbwhart/media/Wee%20Vertical%20Engine/DSC01867_zpsbmoeqyyj.jpg.html)

(http://i431.photobucket.com/albums/qq32/sbwhart/Wee%20Vertical%20Engine/DSC01868_zpsqwcuwhjf.jpg) (http://s431.photobucket.com/user/sbwhart/media/Wee%20Vertical%20Engine/DSC01868_zpsqwcuwhjf.jpg.html)

(http://i431.photobucket.com/albums/qq32/sbwhart/Wee%20Vertical%20Engine/DSC01878_zps15le3ivc.jpg) (http://s431.photobucket.com/user/sbwhart/media/Wee%20Vertical%20Engine/DSC01878_zps15le3ivc.jpg.html)

Stew
Title: Re: Tiny Vertical Based On G. Britnell's Design
Post by: Stilldrillin on January 29, 2015, 12:12:24 PM: So you should be. "Pleased with that"....... :thumbup:

Well done, Stew! :clap: :clap:

David D
Title: Re: Tiny Vertical Based On G. Britnell's Design
Post by: vtsteam on January 29, 2015, 06:51:20 PM: Sounds wonderful, and that valve is amazing! :bow: :bow: :bow: :clap: :clap:
Title: Re: Tiny Vertical Based On G. Britnell's Design
Post by: S. Heslop on January 29, 2015, 08:37:12 PM: I've been watching this thread and i've been holding off just saying something like 'brilliant!', hoping i'll think of something better to say that'll do it justice. But i've been literally speechless the whole time.

So I guess i'll have to settle with just a 'brilliant!'. It's a really amazing little engine.
Title: Re: Tiny Vertical Based On G. Britnell's Design
Post by: Manxmodder on January 29, 2015, 08:58:56 PM: Hey Stew,that is a really neat miniature engine :bow: :bow:

Just one thing bothering me is that Jack fella,he seems to be your typical middle management grade.

Appears for the photos at the start of the project,then delegates responsibility to his underling only to then show up when it's time for the credits to be awarded.

I advise Liz to knock his block off with her wrench :lol: :lol:.....OZ.
Title: Re: Tiny Vertical Based On G. Britnell's Design
Post by: steampunkpete on January 30, 2015, 02:56:43 AM: A work of art. A stunning exhibition of talent. :thumbup: :clap:

All you have to do now is to try and avoid losing it because it's so small! :Doh:
Title: Re: Tiny Vertical Based On G. Britnell's Design
Post by: sbwhart on January 31, 2015, 06:27:00 AM: Thanks for your interest and kind comments lads

I ran the engine for about two hours yesterday whilst I gave my shed its monthly clean out and straw change part way into the run it developed a higher buzz I though that sounds like the little end bearing has gone, It was still running so I just left it to get on with it when I stopped it the little end crank pin was gone:- really gone couldn't find it any ware, I guess the nut had come lose and the pin had moved that what was causing the higher buzz then when I stopped it and moved it the pin had dropped out to be collected by the shop Gremlin

:lol: :lol: :lol: :lol: :lol: :lol:

This morning I made a new pin and tried it with the taco:-

She just touches 4000 rpm and 40 psi and slow running 5 psi she's doing just short of 500.

I found that she is sensitive to the viscosity of the oil she uses,

Sticky Sideways oil gives the slowest run, then 3 in 1 oil the best is with WD 40, which is more or less what you would expect from best to worst is 2000 rpm to 4000rpm.

Cheers

Stew
Title: Re: Tiny Vertical Based On G. Britnell's Design
Post by: sbwhart on February 14, 2015, 01:27:41 PM: I've been tinkering about with it for long enough now so I decided to make a nice wooden base.

So I salvaged a chip off the old thrown

(http://i431.photobucket.com/albums/qq32/sbwhart/Wee%20Vertical%20Engine/DSC01879_zpsm9blq4xc.jpg) (http://s431.photobucket.com/user/sbwhart/media/Wee%20Vertical%20Engine/DSC01879_zpsm9blq4xc.jpg.html)

I don't know what sort of wood it is some sort of oak judging by the way the grain runs up and back, when we bought it, it had a label proudly saying "made in the USA" so perhaps some of you guys will know what it is.

I must say, with the greatest respect, you guys know how to make a darn fine comfortable thrown

:lol: :lol:

(http://i431.photobucket.com/albums/qq32/sbwhart/Wee%20Vertical%20Engine/DSC01880_zpskbuqzvwx.jpg) (http://s431.photobucket.com/user/sbwhart/media/Wee%20Vertical%20Engine/DSC01880_zpskbuqzvwx.jpg.html)

It machined up very nice.

(http://i431.photobucket.com/albums/qq32/sbwhart/Wee%20Vertical%20Engine/DSC01887_zps27i2w5ix.jpg) (http://s431.photobucket.com/user/sbwhart/media/Wee%20Vertical%20Engine/DSC01887_zps27i2w5ix.jpg.html)

And here's the final video, it runs real well but for the video it was very temperamental, after the video I put it on the bench and it ran bountifully, I think we may have some sort of gravity effect on the linkage.

I'm revising the drawing at the moment so will post them for down loading in a few days

Stew
Title: Re: Tiny Vertical Based On G. Britnell's Design
Post by: NormanV on February 14, 2015, 02:05:20 PM: An amazing project, well done!
Title: Re: Tiny Vertical Based On G. Britnell's Design
Post by: tom osselton on February 14, 2015, 03:13:18 PM: "I see the coin there is it "pay as you go?" :D :beer:
Title: Re: Tiny Vertical Based On G. Britnell's Design
Post by: Manxmodder on February 14, 2015, 05:05:10 PM: Stew said: I don't know what sort of wood it is some sort of oak judging by the way the grain runs up and back, when we bought it, it had a label proudly saying "made in the USA" so perhaps some of you guys will know what it is.

It looks remarkably like Bog Oak to me :lol: :lol: :lol:.....Sorry Stew,I'll get my coat and leave quietly :palm:.

Really impressed with the engine. :bow: :bow: ......OZ.
Title: Re: Tiny Vertical Based On G. Britnell's Design
Post by: Bluechip on February 14, 2015, 05:32:23 PM: Quote from: Manxmodder on February 14, 2015, 05:05:10 PM
Stew said: I don't know what sort of wood it is some sort of oak judging by the way the grain runs up and back, when we bought it, it had a label proudly saying "made in the USA" so perhaps some of you guys will know what it is.

It looks remarkably like Bog Oak to me :lol: :lol: :lol:.....Sorry Stew,I'll get my coat and leave quietly :palm:.

Really impressed with the engine. :bow: :bow: ......OZ.

:lol: :lol: :lol:

Same occurred to me but as I've had one Bol*****king today for what seemed to me to be a merry quip, I've kept me trap shut ... :( guess who's been given a Valentine card and omitted to purchase a reciprocal item .. :bang: :bang:

Stew: Could be this wood ... fairly common, even imported into UK at times.

http://en.wikipedia.org/wiki/Quercus_alba

Dave
Title: Re: Tiny Vertical Based On G. Britnell's Design
Post by: steampunkpete on February 14, 2015, 06:11:09 PM: Beautiful work. :bow:

As always I am jealous of the skill that I don't have; I must work harder.
Title: Re: Tiny Vertical Based On G. Britnell's Design
Post by: prallplatte on February 15, 2015, 12:44:15 PM: Real micro-machine production. I need new glases!
Title: Re: Tiny Vertical Based On G. Britnell's Design
Post by: Stilldrillin on February 17, 2015, 03:17:10 PM: Crackin' little engine, Stew! :thumbup:

Well done...... :clap: :clap:

David D
Title: Re: Tiny Vertical Based On G. Britnell's Design
Post by: sbwhart on April 06, 2015, 02:28:56 AM: Sorry Chaps, I've been a bit late getting back to this, holidays and that:- but thanks for your comments.

I've finally got the drawings updated, if any one would like a copy just drop me a PM with your email address and I'll email them back with the drawings.

Cheers

Stew
Title: Re: Tiny Vertical Based On G. Britnell's Design
Post by: Ginger Nut on April 14, 2015, 12:44:02 AM: What a top little motor thanks for the build wip.
The base wasn't a crappy idea just hope it was well cleaned before being handled