Moteur oscillant double effect

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shoey51:
very nice stew i do like your builds :bow: :bow: :bow: :thumbup: :clap: :clap:

Stilldrillin:
Yer away to a fine start Stew! :thumbup:

It's been a while since I did any batch work. I'm pleased to say....... :D

Good luck! Watching from a safe distance. :wave:

David D

sbwhart:
Thanks Lads

I needed some shed time today to get over the stress of taking my 85 year old Dad his 87 year old sister and my 88 year old aunt out for a drive and a pub lunch all three are hard of hearing and wear hearing aids of sorts that never seem to work right, on top of that my Dads sister has a very strong scots accent. I spent the time repeating and translating the conversations that were crossing over and getting mixed up whilst trying to drive, answering the same question time and time again like:- where are we "Buxton", two minutes later where are we "Buxton", two minutes later where are we "Buxton" two minutes later where are we " F*****g New York"

:lol:

Any way back on topic

For drilling the holes in the cylinders and keeping them all the same depth I fitted little sleeves over the drills to act as depth stops, for the smaller drill I glued the sleeves in place for the larger one a slit the sleeves and pinched the slit in slightly, to keep them in place at the set depth. You put the drill in the chuck so that the sleeve is hard up against its jaws and tighten up on the drill shank, you then simply drill the hole as far as the sleeve and thats it all the holes are the same depth.

This will give you the idea.

Next job I made a start on the crank webs, the drawing calls for two webs but I'm doing the build with three webs per engine this is one of Johns design improvements to give a more positive power take off.

Skim down a length of brass bar to 28mm and then slice off 6 mm wide discs.

I'm using a 1/16" part off blade to reduce wastage, I didn't part off all the way the last 1/8 I finished off with a small hack saw this way the disc wouldn't get trapped by the centre.

Next face off one side flip over and face to 5mm thickness, using a round nosed tool this gives a nice finish, when doing a batch try and get a real good finish off the machine this cuts down on post machining polishing.

Set up again and centre drill them rough drill and ream 4mm with a machine reamer, its not important for the hole to be concentric with the OD most of the OD will be chopped away, the critical feature is the hole centres for the crank off set, which will be tomorrows job.

Her we are doing the last one with the rest threaded on a bit of 4mm bar.

Stew

shoey51:
oh wow nice :clap:
im sitting here thinking wish i could do that :scratch:

Stilldrillin:

--- Quote from: shoey51 on August 03, 2010, 03:25:43 PM ---oh wow nice :clap:
im sitting here thinking wish i could do that :scratch:

--- End quote ---

But, Graham..... You can! :thumbup:

But, it's a great help, if John Boggy is a near neighbour, and friend! :lol: :lol:

(Very nicely done Stew!). :clap:

David D

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