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Can you identify these castings?

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norman valentine08/11/2018 19:30:55
200 forum posts
31 photos

I have been givenimg_0424.jpg some castings for an interesting model. I do not know if they are all for the same model. I have assembled some how I think that they might go. Can anyone identify the model? Thanks.

Zan08/11/2018 19:57:44
51 forum posts
2 photos

I think they are tubal cains engine - Tom Walshaw- the cylinder rotates in the central casting I seem to remember with a roller on the end of the piston rod. The cylinder rotates in the frame, fed by steam through its trunnions. Valve was driven by a fixed eccentric sheve with a rotating strap It was a published design perhaps 20 years ago in EIM or Model Engineer. A very neat and brilliant mantle shelf engine. Good luck! I seem to remember the machining of the frame was quite involved. A gyrations challenge ........but I’m working from distant memories.....

JasonB08/11/2018 20:06:38
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Look up Coomber Rotary engine

Neil Wyatt08/11/2018 20:17:25
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My recollection is that the frame needs to be given just the right amount of play in just the right places - it isn't circular either, so you do need TC's description unless you want a lot of head scratching.

Neil

Bill Chugg08/11/2018 20:36:20
104 forum posts
7 photos

May well be the same ones currently available on the Brunel site . If you visit site you will find info on when it was described in EIM etc,

Edited By Bill Chugg on 08/11/2018 20:36:44

norman valentine09/11/2018 08:19:45
200 forum posts
31 photos

Thank you very much for the quick replies. I will have to do some research to see if I can find the drawings.

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