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Can you identify these castings?

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norman valentine	08/11/2018 19:30:55
280 forum posts 40 photos	I have been given 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.
Zan	08/11/2018 19:57:44
356 forum posts 25 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.....
JasonB	08/11/2018 20:06:38
25215 forum posts 3105 photos 1 articles	Look up Coomber Rotary engine
Neil Wyatt	08/11/2018 20:17:25
19226 forum posts 749 photos 86 articles	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
Former Member	08/11/2018 20:36:20
1329 forum posts	[This posting has been removed]
norman valentine	09/11/2018 08:19:45
280 forum posts 40 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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