Can you identify these castings?

Can you identify these castings?

This topic has 6 replies, 5 voices, and was last updated 9 November 2018 at 08:19 by norman valentine.

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8 November 2018 at 19:30 #26290
norman valentine
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@normanvalentine78682
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8 November 2018 at 19:30 #379821
norman valentine
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@normanvalentine78682
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.
8 November 2018 at 19:57 #379825
Zan
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@zan
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…..
8 November 2018 at 20:06 #379827
JasonB
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@jasonb
Look up Coomber Rotary engine
8 November 2018 at 20:17 #379830
Neil Wyatt
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@neilwyatt
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
8 November 2018 at 20:36 #379835
Former Member
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@formermember19781
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9 November 2018 at 08:19 #379891
norman valentine
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@normanvalentine78682
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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