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Gallery, Projects and General => Project Logs => Topic started by: Stilldrillin on July 20, 2011, 03:52:43 AM

Title: Gold Blend. A Coffee Jar Engine........
Post by: Stilldrillin on July 20, 2011, 03:52:43 AM: A couple of weeks ago, after finishing Rizzo, I had a vague idea...... Something larger. Perhaps! :scratch:

To maybe, make a hot air displacer cap, from a stainless steel salt/ pepper pot. :thumbup:

So, I took a walk in my local Wilkinson's.... And found a coffee jar too! :D

Here they are, leaning affectionately upon each other........

(http://i110.photobucket.com/albums/n95/Dayjo/P7050050.jpg)

I gave the jar some thought....... A medium temperature hot air engine!

It will need a plug to form the top deck.

Soon, I had topped an old square piece of 1/4" alloy, into a round piece of 1/4" alloy.......

(http://i110.photobucket.com/albums/n95/Dayjo/P1010030.jpg)

Something like this sort of idea.
At 11mm down, it could hold water, for cooling......

(http://i110.photobucket.com/albums/n95/Dayjo/P1010037.jpg)

Someone, somewhere, has mentioned balsa wood, for a displacer.

(http://i110.photobucket.com/albums/n95/Dayjo/P1010179.jpg)

Mounted on 4mm dia silver steel. Messy stuff.........

(http://i110.photobucket.com/albums/n95/Dayjo/P1010183.jpg)

Next up, two .9mm steel discs. Turned .1” under the 3.75" bore size........

(http://i110.photobucket.com/albums/n95/Dayjo/P1010190.jpg)

This was the collection at yesterday's knock off.......

(http://i110.photobucket.com/albums/n95/Dayjo/P1010196.jpg)

At 1" stroke, what diameter power piston should I go for? :scratch:

I'm just drifting along with it....... Allowing it to develop....... :)

Anyone any thoughts/ input?

David D
Title: Re: Coffee Jar Engine........
Post by: sbwhart on July 20, 2011, 05:28:31 AM: Now this looks interesting
:mmr:

Stew
Title: Re: Coffee Jar Engine........
Post by: arnoldb on July 20, 2011, 01:53:57 PM: Nice one David :thumbup:

:scratch: Don't know about the power piston diameter; Stirling engines are still a bit of an unknown to me... But I would have thought that you would have hollowed out the balsa sandwhiches in between the outer ones a bit to drop a bit more weight :scratch:

Looking forward to your progress though :D

:beer:, Arnold
Title: Re: Coffee Jar Engine........
Post by: DaveH on July 21, 2011, 03:30:35 AM: David,

Looks very interesting :thumbup:

:beer:
DaveH
Title: Re: Coffee Jar Engine........
Post by: NickG on July 21, 2011, 04:58:29 AM: David,

Looks like a great start to me. :thumbup:

Is the displacer still quite light with that rod? Will all need to be light for this sort of engine. Are you going to use graphite for the power piston or will it be a bit hard to get in that diameter? It would be a good idea as light, self lubricating and easy to get a good fit. Prob worth doing for the displacer rod guide too but the brass you have there might work if it's a good fit.

Leaving a recess for water sounds a good idea to me too. You could always stick a tea light under it if you find it needs more heat too.

As I always bang on about, for an LTD you generally need a fairly high ratio of swept volumes, but I'm not sure how high. Assuming you are making the displacer and power cylinder both the same stroke (you don't have to since there will be two cranks) and your Power Piston bore looks about 1"? That would give you a 13.3225:1 ratio which is relatively high but not sure whether it's high enough.

I've got some pics of a commercially available LTD which worked really well, I could try to scale those off and get some idea if you think it might help. That thing could run from the heat of your hand with no cooling to the top plate!
Nice work :beer:
Title: Re: Coffee Jar Engine........
Post by: NickG on July 21, 2011, 06:07:06 AM: David,

I found this link useful, thought you might like to see it. Ihad to read it a few times but think I get it!

http://www.stirlingengines.org.uk/modeng/note.html (http://www.stirlingengines.org.uk/modeng/note.html)

Cheers,

Nick
Title: Re: Coffee Jar Engine........
Post by: Stilldrillin on July 21, 2011, 03:58:04 PM: Thanks for your replies Chaps! :thumbup:

Arnold.
The displacer feels surprisingly light, for it's size. About the same as Boggy's Robinson replacement.
I thought about hollowing the centre, making rings. But, wasn't sure what the heat might do to any glue used. I think unglued solid discs might be best.... For now.

Nick.
Thanks for your usual enthusiasm!
I have a piece of brass tube, which should clean up at 17.5mm bore. Piston will be brass too, probably.
I am hoping it will run on a small, single wick meths burner. If it runs on only a tealight, I'll be delighted!

I have a Contax LTD engine..... Running this past 14 months, behind my computer. That is my inspiration......

Thanks for the link. Read some time ago...... Always good for a refresher!

Managed a little progress today.
Attached the disc to the 4mm shaft, using a 3mm countersink screw, and my faithful high temp sleeve lock.......

(http://i110.photobucket.com/albums/n95/Dayjo/P1010204.jpg)

Turned the o/d to bore size........

(http://i110.photobucket.com/albums/n95/Dayjo/P1010206.jpg)

Drops in, so far..........

(http://i110.photobucket.com/albums/n95/Dayjo/P1010208.jpg)

A gentle push, gets it to the bottom.......

(http://i110.photobucket.com/albums/n95/Dayjo/P1010209.jpg)

This then locates the top deck. Holding it level, and concentric with the displacer shaft.......

(http://i110.photobucket.com/albums/n95/Dayjo/P1010210.jpg)

I think 4 off, 3mm screws through the side, into the deck will locate. Allowing future dismantling and accurate re assembly.

After an hour or so in the oven, to dry out any remaining moisture, I will reduce the displacer to .1" clearance.

I'm expecting no progress during the next few days..... A little Crawling Person will be demanding Grandad's attention! :D

David D
Title: Re: Coffee Jar Engine........
Post by: NickG on July 22, 2011, 04:12:51 AM: David, this is the sort of stuff I've found myself really interested in over the last 5 years or so! People at the club give me funny looks, little sniggers etc as it's heavily loco orientated - I can only assume they haven't built / understood these magical machines!

The LTD I used to have was the same one - they are so well made and would be a good thing to give a few hints on design features.

Ah, I thought you were using the pepper pot for that. The 17.5mm tube may be better. The other thing I've heard of people using is K&S brass tube, which apparently is pretty accurate internally.

The only thing I'm slightly worried about is the heavy displacer rod / disc at bottom, but if the intention is a spirit burner, it may not matter.

Looking forward to progress after weekend - am off camping in Northumberland so will check when / if I return!!

Cheers

Nick
Title: Re: Coffee Jar Engine........
Post by: Stilldrillin on July 22, 2011, 01:16:02 PM: Hope you have a great weekend Nick! :thumbup:

Used to spend a lot of time in, above, and underneath the Yorkshire Dales. Just the memory of those times, starts the arthritis nagging, these days. (http://serve.mysmiley.net/sad/sad0122.gif) (http://www.mysmiley.net/free-animated-smileys.php)

Herself says the engine should have a name, like most of my others....... :poke:

"Gold Blend", she says! ::)

Guess I need to make the rest of the parts, in brass....... :)

David D
Title: Re: Coffee Jar Engine........
Post by: stirling lad on July 24, 2011, 11:05:49 PM: Good grief, your not hanging about with this one. great design, great progress, sods law must be on holiday.
I hope you manage to get loads more done before it gets back ... with a little surprise for you. :thumbup:

keep up the good work, I might try to copy your design one day... after i find the instructions for my screwdriver set.. Doh!

...Mike...
Title: Re: Coffee Jar Engine........
Post by: NickG on July 26, 2011, 03:07:04 PM: Cheers Dave, back now, had a good time. Our last two trips were in the Yorkshire dales so we thought we'd try somewhere different, I went to these places as a kid too so brought back happy memories! Going somewhere in the lakes next week, I know what you mean though, beginning to realise it's quite hard work this camping lark! I think I may end up with arthritis, have always had overly achy joints etc for my age and a few of my ancestors have had it.

Ha, as good a name as any, yep time to get the brass out when you've recovered from granddaughter duty!

Nick
Title: Re: Gold Blend. A Coffee Jar Engine........
Post by: Brass_Machine on July 26, 2011, 08:17:40 PM: Very cool. I don't think I have seen you actually build an engine yet... repair and restore, but not build? Or am I mistaken?

Anyways... very cool idea!

Eric
Title: Re: Gold Blend. A Coffee Jar Engine........
Post by: Stilldrillin on July 29, 2011, 12:28:39 PM: Mike, Nick.... Thanks!

Eric. Only the one!
I was feeling a little left out, when everyone was making rocking engines. ::) http://madmodder.net/index.php?topic=1705.0

After this one, normal service will return, as I have 10 or so differing oddballs to sort out. :scratch:

Here is one of them........

(http://i110.photobucket.com/albums/n95/Dayjo/P1010259.jpg)

Anyroad! I made a cylinder out of a piece of bronze tube, 2" x 3/4 od.

Bored it through to clean up. Turned a piece of delrin, a couple of thou' undersize.......

(http://i110.photobucket.com/albums/n95/Dayjo/P1010240.jpg)

Then spent the next hour or so lapping, with Brasso........

(http://i110.photobucket.com/albums/n95/Dayjo/P1010239.jpg)

Think it worked ok.........

(http://i110.photobucket.com/albums/n95/Dayjo/P1010243.jpg)

Turned/ tapped and parted the piston........

(http://i110.photobucket.com/albums/n95/Dayjo/P1010247.jpg)

Then screwed it onto a 4mm screw, with spacer. To fin turn o/d.......

(http://i110.photobucket.com/albums/n95/Dayjo/P1010248.jpg)

Threaded a piece of 4mm silver steel, for conrod.

Rather pleased. It won't quite drop any further in, until touched. Then it slides the whole way down........

(http://i110.photobucket.com/albums/n95/Dayjo/P1010257.jpg)

Next up. I need to recess the cylinder into the deck, at 36mm centres with the displacer bush.......

(http://i110.photobucket.com/albums/n95/Dayjo/P1010254.jpg)

Slight problem now, no boring head! ......... And it needs a hole a few thou' under 3/4". Just here.......

(http://i110.photobucket.com/albums/n95/Dayjo/P1010260.jpg)

But, Rizzo has been sold on. And a boring head has been ordered, with the proceeds.

Hoping for delivery, and continuation, Monday. :thumbup:

David D
Title: Re: Gold Blend. A Coffee Jar Engine........
Post by: dickda1 on July 29, 2011, 01:25:46 PM: I really like your idea of using Delrin for the lap. I gather it did not bell mouth the top of the bore.
Dick
Title: Re: Gold Blend. A Coffee Jar Engine........
Post by: arnoldb on July 29, 2011, 03:05:08 PM: Coming along great guns David :thumbup:

Just gotta love Brasso; I see you also mix it with some oil for the lapping.

:beer:, Arnold
Title: Re: Gold Blend. A Coffee Jar Engine........
Post by: Stilldrillin on July 29, 2011, 04:18:18 PM: Thanks Dick.
The delrin was turned full length, plus about 1/8".......
I just oscillated by about 1". Allowing cyl to rotate a little, every few seconds. Then I swapped ends, every couple of minutes, or so.

When I made the piston, it was slightly tight, at one end. 5 mins more oscillating got it parallel. :thumbup:

No bell mouth, that I noticed......

Thanks Arnold.
I would have liked something a little more abrasive. But couldn't find anything else in the kitchen cupboard...... ::)

No oil! I regularly dipped my fingers into the reservoir, and applied. The darker stain is drips from the polished brass.

Done over a couple of days. (I can't stand for too long at a time). The polish had dried in the saucer, so I added WD40..... Didn't work! Had to use fresh polish......

David D
Title: Re: Gold Blend. A Coffee Jar Engine........
Post by: Rob.Wilson on July 30, 2011, 04:02:34 AM: Way to go David :bugeye: :bow: :bow: :bow: :bow: :bow: :bow:

Very interesting build :thumbup:

Rob
Title: Re: Gold Blend. A Coffee Jar Engine........
Post by: NickG on July 30, 2011, 01:59:42 PM: Nice work David, perfect fit!

Never really done any lapping myself other than wrapping emery around a stick which after being on the forum for a few years now I realise is the wrong way! But I have heard people use tooth paste? Or would that be too abrasive for your needs?

Nick
Title: Re: Gold Blend. A Coffee Jar Engine........
Post by: CallMeAl on July 30, 2011, 02:11:25 PM: Interesting engine made with such a variety of materials! Nice!
Title: Re: Gold Blend. A Coffee Jar Engine........
Post by: arnoldb on July 30, 2011, 04:27:12 PM: Ahh - the dried-out Brasso problem then Dave... Plays hell when it dries out while trying to lap something :doh: - just tightens up and things want to freeze up.

I think Brasso is water-based - in the dry climate I live it really dries out quickly. I just take the dried powder and mix it with some light/thin sewing machine oil and that works well for running in engines and a bit of lapping :D - like you said, it's slow :doh: - I have used a bit of fine valve-grinding paste for rougher jobs. And I recently got some tubes of diamond paste, to be used in anger at a later date, but keeping in mind that the lap needs to be softer than the workpiece to prevent the diamond embedding in the workpiece.
That WD40 stuff is more solvent than oil - so it ends up evaporating and leaving just the near-dry paste again :doh: - I think that's why I get more fun from the light oil.

:beer:, Arnold
Title: Re: Gold Blend. A Coffee Jar Engine........
Post by: lazylathe on July 30, 2011, 05:24:00 PM: This looks like a fun build David!!!

Following with eager anticipation! :ddb:

For now i will play with cans and make a simple Stirling first before i reduce too much metal into AMAZING scrap.... :lol:

Andrew
Title: Re: Gold Blend. A Coffee Jar Engine........
Post by: stirling lad on July 30, 2011, 09:12:36 PM: :offtopic:sorry to go of topic a little David, but nick mentioned lapping with toothpaste,
would smokers tooth powder be any good as its a fine abrasive ?
and its a pretty pink colour so you could try getting the missus to do it for you,haha.

...mike...
Title: Re: Gold Blend. A Coffee Jar Engine........
Post by: DaveH on July 31, 2011, 06:10:55 AM: Looks very good,
:beer:
DaveH
Title: Re: Gold Blend. A Coffee Jar Engine........
Post by: Stilldrillin on August 04, 2011, 01:03:06 PM: Thanks for your replies Chaps! Much appreciated...... :thumbup:

Nick.
I never thought of raiding the bathroom! Or trying scouring powder.... ::)

Mike.
Smokers Toothpowder? I think Colgate Sensitive is more me! (http://serve.mysmiley.net/winking/winking0027.gif) (http://www.footballerpictures.co.uk)

Got a little more done.

Drilled the deck, and opened up to 18mm.......

(http://i110.photobucket.com/albums/n95/Dayjo/P1010262.jpg)

The new boring head had arrived. So, reset and clocked true........

(http://i110.photobucket.com/albums/n95/Dayjo/P1010271.jpg)

And bored out to 18.5mm.......

(http://i110.photobucket.com/albums/n95/Dayjo/P1010273.jpg)

The whole clocking/ boring operation took around 20 mins.
This is the first time ever, I've used a boring head. Despite first using a milling m/c in 1958!

I wonder if I'll ever use it again? Something special... Awaiting a something special job......

(http://i110.photobucket.com/albums/n95/Dayjo/P1010277.jpg)

Shortened the cylinder tube to, stroke + piston length. Then turned spigot to -2 thou on hole size.......

(http://i110.photobucket.com/albums/n95/Dayjo/P1010278.jpg)

Nothing is finished, yet.
I'm not sure about the steel discs. Might try protecting the balsa with cooking foil.....

Time to start cogitating on the crank assembly......
Can't get me head away from a Ross yoke. But, I don't understand the calculations. :bang:

David D
Title: Re: Gold Blend. A Coffee Jar Engine........
Post by: doubleboost on August 04, 2011, 05:34:29 PM: Looking very nice
I keep forgeting to use my boring head
John
Title: Re: Gold Blend. A Coffee Jar Engine........
Post by: Dean W on August 04, 2011, 07:04:56 PM: It sure looks pretty, David. Keep on with the cogitating! : )

Dean
Title: Re: Gold Blend. A Coffee Jar Engine........
Post by: stirling lad on August 04, 2011, 10:10:35 PM: Well, who better for a bit of the old cogitating, :scratch:
than an old codger :smart:

I'm sure you'll crack it soon mate,
you just need to focus....ummmm :med:ummmm.

cant wait to see what you decide??

.....Mike...
Title: Re: Gold Blend. A Coffee Jar Engine........
Post by: Stilldrillin on August 10, 2011, 03:57:06 PM: Well. It's been nearly a week now....... And, I'm only two crank discs further forward! ::)

I really like the idea of a Ross Yoke.. Found all I could on Google, and set to with some paper, pencil, rule, calculator. :thumbup:

After an hour or so of drawing lines and angles. (Sin op hyp, cos ad hyp, tan op adge). I realised I had totally lost the plot! :bang:

Tried again today. 36mm between rods. Need 1" stroke..... Drew it all to scale x 2.. Or x 3.. Or x 4. I even cut out cardboard shapes. :smart:

But, I don't think my dimensions are possible. I think I'm trying to change the laws of trigonometry! :palm:

Unless, someone out there knows different...... Anyone got any ideas/ input?

David D
Title: Re: Gold Blend. A Coffee Jar Engine........
Post by: Bluechip on August 10, 2011, 05:25:10 PM: Dave SD

Looked at this ???

http://www.ohio.edu/people/urieli/stirling/engines/yoke_vol.html

Dave BC
Title: Re: Gold Blend. A Coffee Jar Engine........
Post by: Stilldrillin on August 10, 2011, 05:58:07 PM: Thanks Dave.
I've been studying that for several weeks......... :scratch:

The only part which makes sense........., We now consider the minimum and maximum displacements of the compression and expansion pistons. Notice that they respectively occur when the crank arm lines up with the yoke edge. :smart:

After all the faffing about with me geometry set etc. I don't think it's possible to have a stroke of more than 18mm, at 36mm centres.

Unless........

David D
Title: Re: Gold Blend. A Coffee Jar Engine........
Post by: Bluechip on August 10, 2011, 06:11:23 PM: Dave
There is a link from that site to an animation. Had a quick shufti at that ... ???

I think you may well be right.

Maybe that's why you don't see too many Ross Linkage engines .... :scratch:

The Rhombic is quite understandable ... by comparison.

I have both Rizzo books, but neither give any real insight ..

Doing an ordinary Stirling meself at the mo ... just out of all the scratty bits of metal I have ..

Being slung together on the fly ... ::) was going to do some more this PM but felt off it.

Been to the Dentist this AM for two fillings ...

Cakehole inoperative ever since ... just got it going about 7PM so I've been stuffing my face ever since, need to catch up on snap ..

Regards from a peckish ...

BC
Title: Re: Gold Blend. A Coffee Jar Engine........
Post by: Stilldrillin on August 12, 2011, 04:03:07 PM: Well......

Had another go, with geometry set (99p Wilkinsons), squared paper, cardboard cut outs, imagination etc.... :smart:

Managed to prove one thing. I've totally lost any trigonometrical ability. Despite using it almost daily while working for a living! :palm:

Sooo....... After all that waste of time, decided to build a conventional crank assembly! ::)

Drilled the deck 5mm, and threw away 6off assorted/ useless, new, tin coated countersink bits. Before finding my old rose bit, from the 1960's. :bang:

Consequently, not a lot of progress made, in a lot of (precious) time........ :bang:

(http://i110.photobucket.com/albums/n95/Dayjo/P1010304.jpg)

The column's rather high at the mo. Better to shorten by an inch, than to extend.

The bearing sleeve, through the column, is 1/2" dia brass, and will have a pair of ballraces.

The discs are 2" dia. The thicker one will be the boss of the 5 or 6" dia flywheel.

No progress possible over the weekend.
But hope have the time, to come up with a means of holding a dozen balsa wood discs securely to an oscillating 4mm piece of silver steel........

Hope your gob's better now, Dave....... :thumbup:

David D
Title: Re: Gold Blend. A Coffee Jar Engine........
Post by: Bluechip on August 12, 2011, 04:27:44 PM: Quote from: Stilldrillin on August 12, 2011, 04:03:07 PM
Well......

Had another go, with geometry set (99p Wilkinsons), squared paper, cardboard cut outs, imagination etc.... :smart:

Managed to prove one thing. I've totally lost any trigonometrical ability. Despite using it almost daily while working for a living! :palm:

Sooo....... After all that waste of time, decided to build a conventional crank assembly! ::)

Drilled the deck 5mm, and threw away 6off assorted/ useless, new, tin coated countersink bits. Before finding my old rose bit, from the 1960's. :bang:

Consequently, not a lot of progress made, in a lot of (precious) time........ :bang:

(http://i110.photobucket.com/albums/n95/Dayjo/P1010304.jpg)

The column's rather high at the mo. Better to shorten by an inch, than to extend.

The bearing sleeve, through the column, is 1/2" dia brass, and will have a pair of ballraces.

The discs are 2" dia. The thicker one will be the boss of the 5 or 6" dia flywheel.

No progress possible over the weekend.
But hope have the time, to come up with a means of holding a dozen balsa wood discs securely to an oscillating 4mm piece of silver steel........

Hope your gob's better now, Dave....... :thumbup:

David D

Ah, It's coming on. I'm sure it will be a runner ... :thumbup:

Recently refurbished gob is in splendid fettle ...

Just completed Full-Power acceptance trials on a bag of Pork Scratchings ....

One small discrepancy, I think he's used Metric fillings ... me gnashers no longer seem to fit BSF nuts ...

Bugger ... :scratch:

BC
Title: Re: Gold Blend. A Coffee Jar Engine........
Post by: Stilldrillin on September 11, 2011, 05:54:44 PM: Has it been a month since I posted/ did anything much? Sheesh! :bugeye:

I've not had much shop time lately, and when I did, I could only manage around an hour at a time..... ::)

I needed some 1mm+ slots. So bought a 1.2 x 50mm dia. slitting saw, then had to make an arbor to suit......

(http://i110.photobucket.com/albums/n95/Dayjo/P1010321.jpg)

It works an all........

(http://i110.photobucket.com/albums/n95/Dayjo/P1010325.jpg)

Been making most of the fiddly bits. These are rod ends......

(http://i110.photobucket.com/albums/n95/Dayjo/P1010327.jpg)

Ball race big end, rings.........

(http://i110.photobucket.com/albums/n95/Dayjo/P1010453.jpg)

Fitted ball race main bearings. Pushrods are 3/16" brass tube.

Have replaced the displacer steel disc, with a disc from a jam jar lid.......

(http://i110.photobucket.com/albums/n95/Dayjo/P1010451.jpg)

All loosely pressed together. The piston just ducks back inside the cylinder, as the displacer arrives.......

(http://i110.photobucket.com/albums/n95/Dayjo/P1010442.jpg)

I now need to find some way of holding the top displacer disc in place, without marking the shaft.
Also a 6" x 1/4" flywheel........

(http://i110.photobucket.com/albums/n95/Dayjo/P1010439.jpg)

David D
Title: Re: Gold Blend. A Coffee Jar Engine........
Post by: Rob.Wilson on September 11, 2011, 06:13:01 PM: :bugeye: looking great David :clap: :clap: :clap: :clap:

Very interesting build :thumbup:

Rob
Title: Re: Gold Blend. A Coffee Jar Engine........
Post by: Dean W on September 11, 2011, 08:10:35 PM: I like what you have going on, David. Also, I see you have another LTD running in the back ground.
One for moral support. : )
Title: Re: Gold Blend. A Coffee Jar Engine........
Post by: lazylathe on September 11, 2011, 08:20:21 PM: Looks like it is all coming together now!!!

Can't wait to see this one running!!!

Andrew

PS: I wish my router was hot enough to run my Kontax Stilring engine...
It will run off the heat of my hand but my router stays at room temp...
Title: Re: Gold Blend. A Coffee Jar Engine........
Post by: NickG on September 12, 2011, 07:40:21 AM: Yeah great work David, looks excellent! Can't wait to see the next one :thumbup:
Title: Re: Gold Blend. A Coffee Jar Engine........
Post by: arnoldb on September 13, 2011, 07:37:11 AM: That's looking just the job David :clap: :clap:

I see you also end up with the make-a-tool-to-finish-the-project stuff :coffee:

:beer:, Arnold
Title: Re: Gold Blend. A Coffee Jar Engine........
Post by: Stilldrillin on September 13, 2011, 03:30:53 PM: Thanks for your kind replies Chaps! Much appreciated. :thumbup:

Managed a little shop time today....... One more (little) step along the way... ::)

I needed a lightweight means of discretely holding a dozen balsa wood discs in place, on a 4mm dia shaft. But not causing any extra dead space in the chamber.

Turned an alloy top hat bush,......

(http://i110.photobucket.com/albums/n95/Dayjo/P1010458.jpg)

Thinned flange to 1.5mm......

(http://i110.photobucket.com/albums/n95/Dayjo/P1010459.jpg)

Found it was very easy to produce the recess with a sharp 8mm endmill. Plunged, to rough out. Then manoeuvred the wood around to finish neatly.

There's no pic of neatly........

(http://i110.photobucket.com/albums/n95/Dayjo/P1010462.jpg)

Held in place with a spot of loctite. One more little step sorted........

(http://i110.photobucket.com/albums/n95/Dayjo/P1010496.jpg)

Temporary flywheel, next. :scratch:

David D
Title: Re: Gold Blend. A Coffee Jar Engine........
Post by: Stilldrillin on September 16, 2011, 12:19:36 PM: What to do for a flywheel, had me scratching me head...... :scratch:
Don't want to invest some £12 or so, in a piece of 6" square x 1/4". Until I know things are going to work out..... ::)

Decided to fit spokes, only. Drilled & tapped M4......

(http://i110.photobucket.com/albums/n95/Dayjo/P1010498.jpg)

Realised I could shorten one spoke, for balance.

At 7/8" removed, the big end hung at 3, and 9 o'clock......

(http://i110.photobucket.com/albums/n95/Dayjo/P1010499-1.jpg)

Couldn't do much with the displacer. It will have to be unbalanced, for now......

(http://i110.photobucket.com/albums/n95/Dayjo/P1010502.jpg)

Popped a light under.........

"Oh Happy Day"!!!

:ddb: :ddb: :) :) :ddb: :ddb:

Blummin big grin time! :thumbup:

That's quite enough excitement for one day......... :D

David D
Title: Re: Gold Blend. A Coffee Jar Engine........
Post by: stirling lad on September 16, 2011, 12:59:09 PM: HaHa!! well done David, excellent result ...

IT'S ALIVE!!!

I'm so pleased for you mate... :clap: :clap: :clap: :bow: :smart:

...Mike...
Title: Re: Gold Blend. A Coffee Jar Engine........
Post by: saw on September 16, 2011, 01:15:52 PM: So very nice, good work :clap: :clap:
Title: Re: Gold Blend. A Coffee Jar Engine........
Post by: danstir4 on September 16, 2011, 01:37:48 PM: Wow, that is great! Have you considered using rice cakes for the displacer? (Still trying to find a possible use for a rice cake).
Title: Re: Gold Blend. A Coffee Jar Engine........
Post by: sbwhart on September 16, 2011, 02:01:51 PM: FANTASTIC FANTASTIC FANTASTIC FANTASTIC FANTASTIC

:clap: :clap: :clap: :clap: :clap: :clap: :clap:

:nrocks: :nrocks: :nrocks: :nrocks: :nrocks:

Great stuff Dave

:thumbup:
Title: Re: Gold Blend. A Coffee Jar Engine........
Post by: DaveH on September 16, 2011, 02:47:04 PM: Dave,

And so you should be pleased :clap: :clap: :clap:

Par excellent :thumbup: :thumbup: :thumbup:

:beer:
DaveH
Title: Re: Gold Blend. A Coffee Jar Engine........
Post by: Bluechip on September 16, 2011, 03:41:29 PM: Hi Dave SD

Nice ... :thumbup:

Dignified ... presume the drill bit ain't permanent ??? :D

Was going to do a bit of mine yesterday ... until I found my stock of 1/4" brass bar is all 6mm :bang:
So, off to Live Steam Models at Little Eaton to replenish ..
Popped into Robby's on the way back, and landed up playing with the dog ...
Too nice a day to be inside anyway ..

BC

PS

That balsa displacer intrigues me, wonder if they can be made with Intumescent Foam ??

No idea if it can be machined though ...
Title: Re: Gold Blend. A Coffee Jar Engine........
Post by: Dean W on September 16, 2011, 04:16:16 PM: What a smooth runner! That's great, David!
Title: Re: Gold Blend. A Coffee Jar Engine........
Post by: arnoldb on September 17, 2011, 04:23:44 AM: :clap: :clap: :clap: Great going David :thumbup:

It runs really smoothly :bow:

Kind regards, Arnold
Title: Re: Gold Blend. A Coffee Jar Engine........
Post by: Stilldrillin on September 17, 2011, 04:30:09 AM: Thanks for all your kind comments Chaps! :thumbup:

It's tomorrow now, and I've still got a big silly grin! :D

Ran it again, after mopping out the condensation from the balsa. At the end it was running happily at some 250rpm. Too fast for me.

The single wick burner is too much, having singed the wood slightly. Guess it might run on a tea light, after all.... :scratch:

Lots to do yet.......
Lots of 1.5mm pins to make, cos I keep on loosing 'em on the floor. Need to put the drill back in the rack, before it is lost too! :palm:

Happy little Drillin...... (http://freesmileyface.net/smiley/happy/happy-smile-012.gif) (http://freesmileyface.net/free-happy-smileys.html)

David D
Title: Re: Gold Blend. A Coffee Jar Engine........
Post by: Rob.Wilson on September 17, 2011, 12:39:11 PM: :bow: :bow: :bow: :bow: :bow: :bow: :bow: spot on David :thumbup: :clap: :clap: :clap: :clap: :clap:

Runs great :med:

Rob
Title: Re: Gold Blend. A Coffee Jar Engine........
Post by: modeldozer on September 17, 2011, 01:11:08 PM: :bow: :bow: :bow: :bow: :bow: :bow: :bow: :bow: :bow: :bow:
Well done.

:beer:

Abraham
Title: Re: Gold Blend. A Coffee Jar Engine........
Post by: madjackghengis on September 17, 2011, 02:52:20 PM: Quote from: danstir4 on September 16, 2011, 01:37:48 PM
Wow, that is great! Have you considered using rice cakes for the displacer? (Still trying to find a possible use for a rice cake).
Having just stumbled on this build, after missing for a while with work from a storm and cleanup, I found this from the start to be just my sort of thing: looking around and getting smacked in the head with an idea which jumps off the shelf and strikes me between the eyes. I haven't finished going through the build because this quote was too perfect to waste, but I've been looking to build a stirling and even have a kit I bought and haven't started, but twenty years ago or so, I got a sample actuator which is pyrex glass tube with a graphite piston, meant to operate some gizmo or door or something, and I've never got around to using it. The rice cake sounds like the perfect start of a displacer and about the right size to go with the actuator.
I have to say, the initial trial run of this actual build is very impressive, and I'll probably sound stupid not having read the rest, but seeing those spokes flying around, my first thought was "hang the flywheel, replace those spokes with blades, and you've got a very fancy table fan to keep you cool in the summer, or warmer in the winter. Fantastic workmanship, and proof positive no glue necessary with balsa. Truthfully, I was afraid the displacer would be too heavy, but it obviously isn't at all. Very nice job. :jaw: :bow: :beer: Cheers, mad jack
Title: Re: Gold Blend. A Coffee Jar Engine........
Post by: doubleboost on September 17, 2011, 05:13:13 PM: I would be pleased as well
Runs great :thumbup: :thumbup: :thumbup:
This has been a fun build to follow
John
Title: Re: Gold Blend. A Coffee Jar Engine........
Post by: madjackghengis on September 18, 2011, 12:42:40 PM: Just as a matter of general information, I was a Marine, and we had to keep all our brass well polished and we used brasso, but also jeweler's rouge, easy to find on a military installation, but I would ask a jeweler where to get some, when my lump runs out. As to WD-40, it is about 97% Stoddard solvent, and some two or three percent castor oil, according to the company's data sheet. I also use liquid polishing compound for auto body work for lapping, adding rouge to it initially and finishing with just the polish. In a pinch, one can sneak into the better half's side of the cabinet and find her "rouge" and it is the same stuff and equally fine for lapping. Looking forward to the finished project and another video. :bugeye: :jaw: :beer: Cheers, mad jack
Title: Re: Gold Blend. A Coffee Jar Engine........
Post by: Bluechip on September 18, 2011, 02:25:57 PM: While we are on about lapping ... or not ... anyway I'll poke my nose in ..

Ages ago I used this stuff in the making of very thin sections of fossils ... before sticking to microscope slides ..

http://www.ceriumoxide.co.uk/

It is a very fine polishing mineral. I have some ... err .. somewhere :doh:

Not from the supplier above though.

Anyone used it for pistons/bores etc ??

BC
Title: Re: Gold Blend. A Coffee Jar Engine........
Post by: NickG on September 18, 2011, 02:35:56 PM: Brilliant that David :thumbup: well done, very smooth!
Title: Re: Gold Blend. A Coffee Jar Engine........
Post by: Stilldrillin on September 18, 2011, 03:54:06 PM: Thanks very much Chaps, for your interest and kind comments. I'm thoroughly enjoying this project! :D

Frankly, I couldn't believe how sweetly it ran. Even though it's only roughly cobbled together, just to prove (or not)......

So, I permanently fixed a few more parts, and tried again........

Getting a bit boring now, innit! ::)

The knock, was one of the spokes catching the column, just above the cylinder.
There's not much room available, so I intend to reduce the dia of the column's centre section.

Talking of flywheels, and their cost. I spotted this omelette pan in Tesco, £4.......

(http://i110.photobucket.com/albums/n95/Dayjo/P1010522.jpg)

Just under 6" dia machined area. Hope I can adapt it to fit, without making too many scratches. :thumbup:

David D
Title: Re: Gold Blend. A Coffee Jar Engine........
Post by: Bluechip on September 18, 2011, 04:09:44 PM: That engine runs really nicely ... :thumbup:

BTW ....

If you're just going to use the pan ..

Can I have the omelette ???

BC
Title: Re: Gold Blend. A Coffee Jar Engine........
Post by: Stilldrillin on September 18, 2011, 05:52:21 PM: Quote from: Bluechip on September 18, 2011, 04:09:44 PM

If you're just going to use the pan ..

Can I have the omelette ???

BC

Dave.
When I get this thing finished, and running...... You can have the omelette, no problem! :thumbup:

David D
Title: Re: Gold Blend. A Coffee Jar Engine........
Post by: Dean W on September 18, 2011, 07:38:00 PM: Second run even sweeter than the first, David. It's soo good.. Calm, quiet, smooth. Just lovely.
Title: Re: Gold Blend. A Coffee Jar Engine........
Post by: stirling lad on September 19, 2011, 05:22:03 AM: Quote from: Stilldrillin on September 18, 2011, 05:52:21 PM
Quote from: Bluechip on September 18, 2011, 04:09:44 PM

If you're just going to use the pan ..

Can I have the omelette ???

BC

Dave.
When I get this thing finished, and running...... You can have the omelette, no problem! :thumbup:

David D
Bc, stop egging him on, cant u see he's still shell shocked.. :palm:
Well done David,its running so smoothly, and if your flywheel idea works out you'll be eggstatic...

ok. ok. i'll get my coat..

...Mike...
Title: Re: Gold Blend. A Coffee Jar Engine........
Post by: NickG on September 19, 2011, 07:40:29 AM: Good job he didn't go for the Ross Yoke or he'd be egging his bets ..
Title: Re: Gold Blend. A Coffee Jar Engine........
Post by: Stilldrillin on September 19, 2011, 08:07:19 AM: :D :D :lol: :lol:

Thanks Chaps! :clap: :clap:

Just made a start. The alloy's as soft as plasticine. Drilled 3 concentric holes, to bolt back to me faceplate...... :thumbup:

Which I now realise has 8 big holes........ :palm:

I hadn't counted 'em, and I can't get 'em to line up sensibly! :doh:

Sheesh! :bang: :bang:

David D
Title: Re: Gold Blend. A Coffee Jar Engine........
Post by: madjackghengis on September 19, 2011, 12:14:39 PM: Quote from: Bluechip on September 18, 2011, 02:25:57 PM
While we are on about lapping ... or not ... anyway I'll poke my nose in ..

Ages ago I used this stuff in the making of very thin sections of fossils ... before sticking to microscope slides ..

http://www.ceriumoxide.co.uk/

It is a very fine polishing mineral. I have some ... err .. somewhere :doh:

Not from the supplier above though.

Anyone used it for pistons/bores etc ??

BC

BC Hi, thanks for chiming in, as long as David doesn't mind, I'd long forgotten that compound, not having used it in a few decades. For some of the finest lapping, cigarette ash is among the finest available, as it is the silica drawn up with the water into the tobacco plant and the source of the paper (wood etc.), and as it is drawn up by capillary action, only the finest grains are light enough to end up in the fiber of the plants. It can be put with water or oil, whichever is most convenient, and it leaves a mirror finish if the right steps are used. Having watched the new video, I have to say it is a work of beauty, built the way I enjoy the most: built out of the scrap bin, and using old stuff, which is the single most effective way to save energy through recycling. No cost to alter the scrap and turn it into a refrigerator or something, but used in its original form for a slightly different purpose. In this video, the spokes actually look like large fan blades as the crank spins smoothly and silently. By the way, the pan is most likely very close to pure aluminum, which makes it act sort of like butter sometimes, and a lot like peanut butter at others. Very fine job all around, and looking forward to the final touches. :drool: :nrocks: :jaw: :beer: Cheers, mad jack
Title: Re: Gold Blend. A Coffee Jar Engine........
Post by: lazylathe on September 19, 2011, 08:29:34 PM: That is awesome David!!!!!!!

:proj:

Fantastic runner and quiet just like a Stirling should be!!!!

Can't wait to see the final result with the flywheel!!

Andrew
Title: Re: Gold Blend. A Coffee Jar Engine........
Post by: Stilldrillin on September 24, 2011, 05:15:38 PM: Got some more done.......

After the 3 into 8 won't go conundrum, I paced out the faceplate holes accurately, on my rotary table.

Just squeezed in........

(http://i110.photobucket.com/albums/n95/Dayjo/P1010541.jpg)

Sawed away the excess diameter. Note the obligatory scratch........ :bang: :bang:

(http://i110.photobucket.com/albums/n95/Dayjo/P1010528.jpg)

I'd marked off the holes in the pan freehand, with dividers and centre punch. It fitted perfectly on the "precision" placed studs.
Nice to know I can still mark out accurately! :thumbup:

(http://i110.photobucket.com/albums/n95/Dayjo/P1010529.jpg)

Skimmed o/d, and both sides, then swapped to some precision, thin cardboard........

(http://i110.photobucket.com/albums/n95/Dayjo/P1010540.jpg)

This allowed accurate facing away of the radius, leaving a truly flat disc......

(http://i110.photobucket.com/albums/n95/Dayjo/P1010539.jpg)

Found it very difficult to get the scroll spinning true..... Until I placed the drill chuck close by, and tapped disc true with lead tup.

(http://i110.photobucket.com/albums/n95/Dayjo/P1010533.jpg)

Topped, and bored to 1.5".......

(http://i110.photobucket.com/albums/n95/Dayjo/P1010534.jpg)

Will turn a spigot on the 2" boss. Should look something like this.......

(http://i110.photobucket.com/albums/n95/Dayjo/P1010547.jpg)

Rear view........

(http://i110.photobucket.com/albums/n95/Dayjo/P1010549.jpg)

Two of the holes will fix the balance quadrant. The other will have a plug fitted.

Next up, is recycling the boss. Nowt much goes to waste here!

Plugged the spoke and grubscrew holes, ready for re machining......

(http://i110.photobucket.com/albums/n95/Dayjo/P1010545.jpg)

More progress, sometime next week, probably.......

David D
Title: Re: Gold Blend. A Coffee Jar Engine........
Post by: saw on September 24, 2011, 05:44:32 PM: Nice work on the flywheel :clap: :clap:
Title: Re: Gold Blend. A Coffee Jar Engine........
Post by: NickG on September 29, 2011, 10:23:06 PM: Yeah looks good that David, how thick is the frying pan base?
Title: Re: Gold Blend. A Coffee Jar Engine........
Post by: Stilldrillin on September 30, 2011, 02:16:11 AM: Thanks Chaps! :thumbup:

Thickness is .085", in the centre area Nick......

Does anyone think, this is taking conservation of resources a little too far? :D

(http://i110.photobucket.com/albums/n95/Dayjo/P1010562.jpg)

David D
Title: Re: Gold Blend. A Coffee Jar Engine........
Post by: Stilldrillin on October 14, 2011, 12:16:36 PM: Two more weeks gone by! Haven't been able to do much...... ::)

Spent a lot of precious time on balancing the pistons, separately. Displacer needs 14gm at flywheel rim, piston needs 7gm .
Made a lovely curved weight, guessing at a final weight of 14 gms. Riveted in place between the two 90* throws. Remembering to bias 2/3 towards the displacer.

(http://i110.photobucket.com/albums/n95/Dayjo/P1010598.jpg)

The engine swayed from side to side!! :palm: So I took it off, but left the rivets in place as a talking point...... :thumbup:

Decided it was time for another run. Less heat this time.

I was surprised, and delighted.......

Still to be pulled apart again, for final locking pins, and sealer. But, looking good, for when it's run in. :D

David D
Title: Re: Gold Blend. A Coffee Jar Engine........
Post by: arnoldb on October 14, 2011, 03:04:56 PM: :clap: :clap: Very nice runner David :bow: - quiet & smooth :thumbup:

And no surprise at all; you built it well, so it should run well :D

:beer:, Arnold

I was going to tease you a bit about everything being stuck to the wall... :poke: Just how did you manage to make that tea candle have a horizontal flame ? :scratch: :D
Title: Re: Gold Blend. A Coffee Jar Engine........
Post by: Chuck in E. TN on October 14, 2011, 03:17:13 PM: Stilldrillin',I'll be studying this build intensely. I'm going to copy your efforts to build a wood stove fan for my brother.

Chuck in E. TN

:doh:Forgot to add: Very nice work. indeed. :bow: :bow: :bow: :bow: :bow:
Title: Re: Gold Blend. A Coffee Jar Engine........
Post by: sbwhart on October 14, 2011, 03:37:21 PM: I new this one would PAN out Dave :lol: :lol: :lol: :lol:

What a little beauty :thumbup:

Stew
Title: Re: Gold Blend. A Coffee Jar Engine........
Post by: saw on October 14, 2011, 03:45:52 PM: Very nice engine you got there :clap: :clap:
Title: Re: Gold Blend. A Coffee Jar Engine........
Post by: Dean W on October 14, 2011, 07:16:28 PM: That's sooo good, David! Your good job shows in spades with such a large engine running on that tiny flame.
Kudos, my friend!

Dean
Title: Re: Gold Blend. A Coffee Jar Engine........
Post by: NickG on October 15, 2011, 10:40:06 AM: Excellent result David ... just goes to show the research you put in paid off I think, your work upfront with the design and how it was eggsecuted is what made it run so well on the tea light. :thumbup:
Title: Re: Gold Blend. A Coffee Jar Engine........
Post by: DaveH on October 15, 2011, 07:00:46 PM: David,

Very splendid :clap: :clap: :clap:

:beer:
DaveH
Title: Re: Gold Blend. A Coffee Jar Engine........
Post by: BK on October 15, 2011, 11:35:05 PM: G'day David, just read this thread, what a clever design/build and you could not wish for a better result, runs great. :clap: :clap: :thumbup: :thumbup:
I don't know any egg yolks so I'll just scramble outa this nest!! :beer:
Title: Re: Gold Blend. A Coffee Jar Engine........
Post by: Stilldrillin on October 18, 2011, 03:51:34 PM: Thanks for all your kind words Chaps. :thumbup:

Chuck, It would run very well on a stove. Not sure how long the balsa displacer would last though! ::)
Singed it, with the meths burner. But, the tealight does it no harm.

Hi Bernie. Nice to see you've joined in.

"Finished" the engine today.
After warming up with a drop of meths, it ran on the tealight for some 2 - 3 hours. All ok!

It needs a base/ firebox now.
Found a stainless steel dog's bowl, in Wilkinson's for £1.35........ :D

David D
Title: Re: Gold Blend. A Coffee Jar Engine........
Post by: doubleboost on October 18, 2011, 05:47:17 PM: Very nice indeed :thumbup: :thumbup: :thumbup:
It is amazing the stainless kitchen ware you can pick up for little money
John
Title: Re: Gold Blend. A Coffee Jar Engine........
Post by: madjackghengis on October 19, 2011, 11:05:01 AM: Very nice to see it running on a tiny tea candle, David, and a very interesting use for that pan. The next project I expect will use the rim and remains of the omlet pan I expect, right? It never ceases to amaze me how quiet the stirlings are. That is a fine runner, and a good show of what can be done with just what is found lying around. very nice indeed! :bow: :jaw: :beer: Cheers, mad jack
Title: Re: Gold Blend. A Coffee Jar Engine........
Post by: stirling lad on October 19, 2011, 04:59:36 PM: another fine job from the stilldrillin hot air engine factory..

first class job mate.. well done... :thumbup: :clap: :bow:

.mike...
Title: Re: Gold Blend. A Coffee Jar Engine........
Post by: Bluechip on October 19, 2011, 07:22:54 PM: Quote from: doubleboost on October 18, 2011, 05:47:17 PM
Very nice indeed :thumbup: :thumbup: :thumbup:
It is amazing the stainless kitchen ware you can pick up for little money
John

True John ... but one thing troubles me ...

This 'stainless steel dog' stuff ...

Funny place, Chesterfield ...

Bent spires, stainless steel dogs ...

Hmmmmmmm ....

BC
Title: Re: Gold Blend. A Coffee Jar Engine........
Post by: Stilldrillin on October 20, 2011, 08:18:29 AM: Thanks again, for your kind comments Chaps! :thumbup:

Quote from: Bluechip on October 19, 2011, 07:22:54 PM

True John ... but one thing troubles me ...

This 'stainless steel dog' stuff ...

Funny place, Chesterfield ...

Bent spires, stainless steel dogs ...

Hmmmmmmm ....

BC

Dave.
There's nowt wrong here. :thumbup:

But, we do have funny neighbours. Them over the fence, who cause all the problems....... ::)

Would you like to have to live next door to you?

:D

David D
Title: Re: Gold Blend. A Coffee Jar Engine........
Post by: Bluechip on October 20, 2011, 02:21:44 PM: Quote from: Stilldrillin on October 20, 2011, 08:18:29 AM
Dave.
There's nowt wrong here. :thumbup:

But, we do have funny neighbours. Them over the fence, who cause all the problems....... ::)

Would you like to have to live next door to you?

:D

David D

My neighbours think I'm a little treasure ...

I sign for their parcels ..

And victimise them with my tomato glut .. :thumbup:

I also keep the noise below 140 dBA ... err... occasionally.

PS Taller fence ???

BC
Title: Re: Gold Blend. A Coffee Jar Engine........
Post by: Stilldrillin on October 21, 2011, 05:58:02 PM: Adapted the feeding bowl/ base.

Piece of 10mm ply. 7.5" square. Screwed bowl on, concentric..........

(http://i110.photobucket.com/albums/n95/Dayjo/P1010639.jpg)

Then screwed to faceplate.......

(http://i110.photobucket.com/albums/n95/Dayjo/P1010648.jpg)

Faceplate in r/t chuck, and 2mm endmill..............

(http://i110.photobucket.com/albums/n95/Dayjo/P1010644.jpg)

No problem! Then opened out to size.......

(http://i110.photobucket.com/albums/n95/Dayjo/P1010646.jpg)

The square backing ply, rested on the machine table holding against rotating. While opening out the doorway.......

(http://i110.photobucket.com/albums/n95/Dayjo/P1010649.jpg)

The corners locked into the T slot. For the rear vents.......

(http://i110.photobucket.com/albums/n95/Dayjo/P1010652.jpg)

Rear view......

(http://i110.photobucket.com/albums/n95/Dayjo/P1010656.jpg)

Front view.......

(http://i110.photobucket.com/albums/n95/Dayjo/P1010657.jpg)

Made myself a start up burner.
Nub end of 3/4” brass. Opened out to 12mm x 1/2” deep. Stuffed with wick, will hold enough meths to burn for 2 mins or so. Then swap to tealight.

(http://i110.photobucket.com/albums/n95/Dayjo/P1010638.jpg)

Now, need to experiment to find the optimum candle height......

(http://i110.photobucket.com/albums/n95/Dayjo/P1010660.jpg)

David D
Title: Re: Gold Blend. A Coffee Jar Engine........
Post by: sbwhart on October 21, 2011, 06:09:52 PM: That was cleaver Dave:-it didn't come out as a dogs dinner :D.

When you hand the board vertical what was it clamped to, from the pic it looked like you were using sky hooks :scratch:

Stew
Title: Re: Gold Blend. A Coffee Jar Engine........
Post by: DMIOM on October 22, 2011, 03:28:26 AM: Nicely shown as usual

Have you upgraded to 2 candlepower ? :coffee:

Quote
(http://i110.photobucket.com/albums/n95/Dayjo/P1010660.jpg)
Title: Re: Gold Blend. A Coffee Jar Engine........
Post by: Stilldrillin on October 22, 2011, 03:36:34 AM: Quote from: sbwhart on October 21, 2011, 06:09:52 PM
That was cleaver Dave:-it didn't come out as a dogs dinner :D.

When you hand the board vertical what was it clamped to, from the pic it looked like you were using sky hooks :scratch:

Stew

Thanks Stew!

I was a bit pleased.... No distemper, or hard pad. The whole job went much better than expected. (Very thin stainless spinning). :D

Sky hooks? Nah! Not even a short leash......

I have a tilting r/t. Faceplate boss, gripped in chuck jaws. Just angled it over, until the ply edge, or corner, rested on the machine table.
I could then take off, and re set to position, as often as needed...... :thumbup:

David D
Title: Re: Gold Blend. A Coffee Jar Engine........
Post by: Stilldrillin on October 22, 2011, 03:46:56 AM: Quote from: DMIOM on October 22, 2011, 03:28:26 AM
Nicely shown as usual

Have you upgraded to 2 candlepower ? :coffee:

Thanks Dave!

TWO candles! :bugeye: Steady on!

Nomate, not just yet. The bowl was a little deeper than I wished. (This thing is growing higher by the week!). Still needs a base board. :scratch:

The candle needs to be held on a plinth, some 3/4" high. Just making do, so far, with a spent holder and a jam jar lid.

The higher skirt/ deeper bowl, will allow me to make up a meths burner. Sometime...... Mebbe...... ::)

David D
Title: Re: Gold Blend. A Coffee Jar Engine........
Post by: DMIOM on October 22, 2011, 06:55:17 AM: Quote from: Stilldrillin on October 22, 2011, 03:46:56 AM
.....
TWO candles! :bugeye: Steady on!
...

OK, we'll believe you!

Going OT : at least you're not (yet?) in the (Two Ronnies) confusing territory of needing 4 candles ! :coffee:

Dave
Title: Re: Gold Blend. A Coffee Jar Engine........
Post by: saw on October 22, 2011, 07:05:35 AM: Yes I always have a big smile when I read and look at your solutions. :)
Very clever. :clap: :clap:
Title: Re: Gold Blend. A Coffee Jar Engine........
Post by: Bernd on October 22, 2011, 08:10:46 AM: Very ingenious, David D. I give you :thumbup: :thumbup: :thumbup: :thumbup: :thumbup:

Bernd
Title: Re: Gold Blend. A Coffee Jar Engine........
Post by: madjackghengis on October 22, 2011, 12:22:11 PM: Hi David, very ingenious design of the stand, very effective means of cutting out and getting things in line. I keep considering a slot in the wick tube of a burner, and a small gear with a stem to wind the wick up and down, but haven't got to it yet, still moving the burner around to keep my engines running evenly. I took apart one of those fireplace lighters, with the long snout and the pietzo and found it has a good size reservoir and is refillable, and hope to put it on one of my flame suckers, with the lever on the reservoir to adjust the flame, with a simple burner head, and finding a place for the piezo to go. The alcohol works so well, but it is a bit finicky about adjusting and getting it just right. I'm looking forward to the finished product, burner, pan, all happily tied together. :jaw: :bugeye: Very nice indeed :beer: Cheers, mad jack
Title: Re: Gold Blend. A Coffee Jar Engine........
Post by: Stilldrillin on November 08, 2011, 06:42:14 AM: Thank you all, for your continuing positive comments, Chaps. They're all, very much appreciated! :thumbup:

I found some nice, 8" x 11" rubber wood chopping boards, in a local shop.

Bought a spare, for later.....

(http://i110.photobucket.com/albums/n95/Dayjo/P1010664.jpg)

Hacked it roughly to round..... Then fixed to the faceplate/ rotary table set up, as before.

Roughed it to 7" diameter using a 12mm endmill.......

(http://i110.photobucket.com/albums/n95/Dayjo/P1010668.jpg)

Squeezed it onto the lathe, and radiused/ sanded the o/d.......

(http://i110.photobucket.com/albums/n95/Dayjo/P1010684.jpg)

Spot of varnish........

(http://i110.photobucket.com/albums/n95/Dayjo/P1010733.jpg)

This thing is getting BIG. Fifteen inches overall height, now.......

(http://i110.photobucket.com/albums/n95/Dayjo/P1010737-1.jpg)

Workshop time is non existent, at the moment. The end is so near, and yet so far......

I only need to make the candle holder to "finish".......

David D
Title: Re: Gold Blend. A Coffee Jar Engine........
Post by: Bernd on November 08, 2011, 07:49:18 AM: Nice work Dave.

Noticed in the last picture on the right, you've got your logo showing on Madmodder. :clap: :clap: :clap: :thumbup:

Bernd
Title: Re: Gold Blend. A Coffee Jar Engine........
Post by: saw on November 08, 2011, 10:04:07 AM: Very nice :thumbup: :thumbup:
Title: Re: Gold Blend. A Coffee Jar Engine........
Post by: NickG on November 08, 2011, 01:27:52 PM: Love it, it's brilliant! :thumbup:
Title: Re: Gold Blend. A Coffee Jar Engine........
Post by: arnoldb on November 08, 2011, 04:17:02 PM: Great job David :thumbup: :clap: :clap: - you must be getting on to finishing it now :D

:beer:, Arnold
Title: Re: Gold Blend. A Coffee Jar Engine........
Post by: DaveH on November 08, 2011, 05:59:15 PM: David,

I think it is absolutely great :clap: :clap: :clap:
:beer:
DaveH
Title: Re: Gold Blend. A Coffee Jar Engine........
Post by: Rob.Wilson on November 09, 2011, 04:26:03 PM: :bugeye: cracking job David :bow: :bow: :bow: :bow: :bow: :bow:

Rob :D
Title: Re: Gold Blend. A Coffee Jar Engine........
Post by: Henning on November 10, 2011, 05:10:51 AM: A most remarkable engine!

Although i think i would maybe have found another base for it? I think that the one on is slightly to high visually to "work" for me.

Runs beautifully though :nrocks:
Title: Re: Gold Blend. A Coffee Jar Engine........
Post by: Stilldrillin on November 25, 2011, 02:56:46 PM: Thanks for all your lovely, positive comments Chaps! They're all very much appreciated..... :thumbup:

Finally managed some productive shop time, over the last two days! :ddb: :ddb:

Experimenting with the candles, had shown it needed more air holes in the base. Also, a larger burner hole.
Thankfully, I could easily replicate the original set up, and do some more chopping. No pics, sorry! :palm:

I made a burner tray, from a piece of 2" x 1" alloy tube, slit down the narrow side.........

(http://i110.photobucket.com/albums/n95/Dayjo/P1010771.jpg)

Locates securely over the sill step.
When thoroughly warmed up, (30mins +), produces a rip snorting 170rpm.......

(http://i110.photobucket.com/albums/n95/Dayjo/P1010773.jpg)

I can leave a single central candle, for slow running. Around 80rpm.......

(http://i110.photobucket.com/albums/n95/Dayjo/P1010776.jpg)

And, the final video........

Very pleased with the outcome! :D

David D
Title: Re: Gold Blend. A Coffee Jar Engine........
Post by: saw on November 25, 2011, 03:04:30 PM: A very fine peace of workmanchip of a lovely engine :clap: :clap: :clap:
Title: Re: Gold Blend. A Coffee Jar Engine........
Post by: Rob.Wilson on November 25, 2011, 03:11:06 PM: Way too go David :bow: :clap: :clap: :bow: :clap: :bow: :clap:

Dam fine runner :thumbup:

Rob :D
Title: Re: Gold Blend. A Coffee Jar Engine........
Post by: -steves- on November 25, 2011, 03:17:09 PM: Awesome David, absolutely awesome :clap: :clap: :clap: :clap: :clap: :thumbup: :thumbup: :thumbup: :thumbup:
Title: Re: Gold Blend. A Coffee Jar Engine........
Post by: sbwhart on November 25, 2011, 04:08:51 PM: And so you should be a "bit pleased"

Cracking job Dave

:clap: :clap: :clap: :clap: :clap: :clap:

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

Stew
Title: Re: Gold Blend. A Coffee Jar Engine........
Post by: DaveH on November 25, 2011, 05:02:56 PM: Beautifull :clap: :clap: :clap:
:beer:
DaveH
Title: Re: Gold Blend. A Coffee Jar Engine........
Post by: Bluechip on November 25, 2011, 05:44:09 PM: Hi Dave SD

That's a really sweet running engine ... :thumbup:

Like it a lot ...

Measured, stately and dignified.

Somewhat like myself .... :scratch:

BC
Title: Re: Gold Blend. A Coffee Jar Engine........
Post by: stirling lad on November 25, 2011, 06:10:42 PM: A lovely Job Mr. Drillin very smooth with nice lines...now what can you do with a teapot :clap:

...Mike...
Title: Re: Gold Blend. A Coffee Jar Engine........
Post by: arnoldb on November 26, 2011, 12:47:13 AM: Well done David; top notch job :bow: :clap: :clap: :clap: :clap: :clap: :clap:

I love the way it runs so slowly and silently :thumbup:

:beer:, Arnold
Title: Re: Gold Blend. A Coffee Jar Engine........
Post by: Stilldrillin on November 26, 2011, 04:41:15 AM: Thanks, once again for your kind comments Chaps..... Very much appreciated! :thumbup:

Dave, BC....... I think of you, almost every time I run this engine....... Quietly distinguished.

Teapot, Mike? ....... Hmmm. "I have an idea"! :palm:

Incidentally, look what I found in my local supermarket! :D

(http://i110.photobucket.com/albums/n95/Dayjo/P1010791.jpg)

David D.
Title: Re: Gold Blend. A Coffee Jar Engine........
Post by: DMIOM on November 26, 2011, 06:56:14 AM: Quote from: Stilldrillin on November 26, 2011, 04:41:15 AM
...... Incidentally, look what I found in my local supermarket! :D

(http://i110.photobucket.com/albums/n95/Dayjo/P1010791.jpg)

David D.

Honestly David, I know its great that you've found a carrying container for your beautiful new engine, and that you're an extremely modest man ("a bit pleased"), but I'm sure the engine is worth well more that £3 even with that new carrying barrel thrown in.

Dave M. :beer:
Title: Re: Gold Blend. A Coffee Jar Engine........
Post by: AdeV on November 26, 2011, 05:31:28 PM: David, that's a quite beautiful and mesmerising engine, and constructed out of what most people (myself included) would never have considered sensible or practical items.

So, have some of these: :bow: :bow: :bow: and a couple of these: :ddb: :ddb:

Can't wait to see what you make from that next can... probably some bonkers petrol engine? :lol:
Title: Re: Gold Blend. A Coffee Jar Engine........
Post by: Stilldrillin on November 26, 2011, 05:39:06 PM: Quote from: DMIOM on November 26, 2011, 06:56:14 AM

Honestly David, I know its great that you've found a carrying container for your beautiful new engine, and that you're an extremely modest man ("a bit pleased"), but I'm sure the engine is worth well more that £3 even with that new carrying barrel thrown in.

Dave M. :beer:

Dave.
Who mentioned carrying? :scratch:

That label's coming off....... I could use the engine as the displacer, in the new hot cap! :lol: :lol:

Ade.
Thank you! Much appreciated...... :thumbup:

Petrol engine? Hmmmm......... :D

David D
Title: Re: Gold Blend. A Coffee Jar Engine........
Post by: andyf on November 26, 2011, 08:05:17 PM: Please, if any of us sees David eyeing up an oildrum, just talk to him about anything but Stirlings, lead him gently home, and put him to bed until he calms down....

Andy
Title: Re: Gold Blend. A Coffee Jar Engine........
Post by: Bluechip on November 27, 2011, 03:00:10 AM: Maybe better not to lead him home past the Gasworks.

The sight of a Gasometer could well push him further over the edge ..

BC
Title: Re: Gold Blend. A Coffee Jar Engine........
Post by: Stilldrillin on November 27, 2011, 04:41:43 AM: Quote from: andyf on November 26, 2011, 08:05:17 PM
Please, if any of us sees David eyeing up an oildrum, just talk to him about anything but Stirlings, lead him gently home, and put him to bed until he calms down....

Andy

Quote from: Bluechip on November 27, 2011, 03:00:10 AM
Maybe better not to lead him home past the Gasworks.

The sight of a Gasometer could well push him further over the edge ..

BC

:D :lol: :lol: :lol: :D

Nice one Fellas! :thumbup:

But........... I'm just beginning to form a plan, for the big hot cap.......... :Doh:

:smart:

David D
Title: Re: Gold Blend. A Coffee Jar Engine........
Post by: sbwhart on November 27, 2011, 05:24:28 AM: Quote from: Stilldrillin on November 27, 2011, 04:41:43 AM
Quote from: andyf on November 26, 2011, 08:05:17 PM
Please, if any of us sees David eyeing up an oildrum, just talk to him about anything but Stirlings, lead him gently home, and put him to bed until he calms down....

Andy

Quote from: Bluechip on November 27, 2011, 03:00:10 AM
Maybe better not to lead him home past the Gasworks.

The sight of a Gasometer could well push him further over the edge ..

BC

:D :lol: :lol: :lol: :D

Nice one Fellas! :thumbup:

But........... I'm just beginning to form a plan, for the big hot cap.......... :Doh:

:smart:

David D

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

Stew