Potty Simpson and Shipton Short Stroke Engine

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arnoldb:
Great going Stew :thumbup: - I like the finishing touches you're adding.

:beer:, Arnold

sbwhart:

Thanks for your interest chaps :wave:

--- Quote ---Oh Stew you could have done better than those elongated dome nuts, surely some nice pineapple nuts would have been more appropriate
--- End quote ---

I've no idea what pineapple nuts look like:- did a little research, are they like an upside down acron nut with a flared top :scratch:

For those of you who don't know what a sine bar look like hers mine:

The bar is made to a very accurate length between the rollers and you just pack one end up to give the desired angle, that you calculate using the sine function.

Finished off the base by drilling the holes, the outer holes were countersunk flat bottom to take the bolting pads and the centre hole for countersunk for the cap screws.

Then turned up the pads.

And the bearings.

I like to push the reamer through with a centre with a drive carrier, that way it floats and you cut a true size.

This is how it all assembles together.

Then stuck the lot together with JB weld gave it 24 hrs to cure then cleaned them up.

Now they look good:- a big thanks to Jason and Ramon for sharing the method its one I will use again in future.

One more bit made the drive half shaft. I was going to make it from 12mm bar, but didn't have any so used 15mm and turned it down to 12mm with an 8mm step for the fly wheel threaded M8

Stew

sbwhart:
Managed to sneak a couple of hours in the shop this morning thanks to my grandson, the little darling had been playing with my bed side clock and put it forward 1 1/2 Hrs so bright and early I was up at my usual time, it was only when I looked at my shop clock that I noticed how early it was

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

Made the fly wheel drive for this I needed at 36mm dia * 10mm slice of mild steel I hadn't got any bar but I did have some 1/2" thick *
1 1/2" steel bar, so I cut of a 1 1/2" length put a centre drilled the middle and then used a friction drive to turn it into a disc.

Then skimed the faces up.

Set it up central on the mill and put a 12mm off set and drilled 9mm

Then drilled and reamed 12mm through the middle

Drilled and tapped M3 for a fixing grub screw.

Then made a 6mm bush for the crank drive and pressed and pressed it into the disc.

Time for a few hows it looking shots.

Stew

Stilldrillin:
How's it looking, Stew?
It's looking as though it's shaping up very well. As usual! :thumbup:

Grandkids.... Love em! Despite the chaos, mess, and fingerprints. :palm:

Your Dixon type toolpost, in the reaming pic, Stew. What's the 1/4" empty hole for? :scratch:
(I'm just fitting one to my lathe)........

David D

sbwhart:

--- Quote ---Your Dixon type toolpost, in the reaming pic, Stew. What's the 1/4" empty hole for?
(I'm just fitting one to my lathe)........

--- End quote ---

Don't know :scratch:

Its never got in the way of anything:- I supose every hole has to be some ware :lol:

Stew

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