Stuart Compound Twin Build -

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jpdenver

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BACK IN THE SHOP FINALLY !!!

Spent all day yesterday cleaning, putting tools away, tramming the mill.

Spent today reviewing other build logs on the same engine.
Then started back up.

I decided it was time to work on the Sol Plate and Bearings some more.
so I got out the bronze Bearing 1/2 castings and cleaned them up.

First squared up the sides, and then the bottom.

Blued the bottom and marked out the centerline.
Then drilled the thru holes for the mounting bolts.
Finally tested the fit.

------
First one done, 2 more to go.

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Thanks for reading -
More to come.

JP Denver
 

PeterDRG

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Very interesting thread. I am working on the Triple. Tom Walshaw did a series in the SIMEC magazine on building one. I would love to get my hands on them.
Cheers
Peter
 

jpdenver

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In the preceding months, I did work on the pistons and started the cross-slides.
But I decided to work on the lower section first.

I messed up the first LP Piston, so I had to use a slug of mild steel to replace the Cast Iron.

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GrahamJTaylor49

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Hi all,
I'm building the Stuart Turner Major beam engine at the moment. I should have it finished sometime this year but have
been working on it for the best part of 18 years. Working on the governor system and having fun with the 7/8" balls.
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jwmachshop

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Congratulations! looks great so far.............but be very careful because there are mistakes in the prints. I built one a few years ago but failed to document the mistakes which I should have done. Prints were produced (I think) in 1979 and I was into the project to the point where I just wanted to get it done. It runs on about 5 PSI. Probably the nicest engine I've produced.

John
 

jpdenver

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Kept on working the bearing blocks and then moved on to the sol plate.

I used a 1/4" round end mill.
On the blocks I went down to about .115 to give me something to work with when
I brought the pieces together. Then I used the same mill on the Sol Plate to mill
the opposing grooves.
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Once both sets were done, I used a long 1/4" reamer to finish up the first full pathway.
Then I slowly increased the size of the reamer 1/64th at a time up to 5/16ths for a final size.

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Everything lines up, but I have a lot of cosmetic fitting to do to make things look good.

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That is going to have to do it for now, off to California to visit the Grand Kids.
Back after the 15th.


Thanks for reading,
Jim
JPDenver
Denver, Colorado USA
 

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