I would think putting the driven in flat head locating pins near the center would
allow the flat steel plates to expand more or less than the aluminum end housing.
We could put heat sink compound between the steel and the aluminum end housing.
The outer edges of the steel sheet could be captured by the rotor housing.
Two piece formed steel side exhaust ports could be welded to the steel sheet.

Paul Lamar

Paul, This would work if you located the center and then floated
the rest of the plate. If you welded the exhaust ports to the thin
side plate I believe you would have horrible problems. I have done
several systems that have had thin heated plates, they are always
a problem. They can be made to work but it isn't as easy as it
seems. Using a side exhaust (rx-8 style) might be more than you
wanted to try on the first go. Not impossible but I think that after
you made it all work that you would think the detonation gun
coatings were cheap by comparison.
Bill Jepson

It would certainly take some experimenting to find the optimum thickness.
Heck 1/4 inch steel plates would be a big improvement over an all cast iron end
housing. I really don't think they will run much over 400 to 500 F.

Detonation gun coated end housings are well over $1000 per surface.
I met this retired Union Carbide Engineer at the Geneva auto show that was called
in by Felix Wankel to explain detonation gun coatings. He told me a funny
story. He said, and I paraphrase here, "Herr Dr. Wankel, let me tell you what this is going 
to cost before I tell you the technical details." Felix got perturbed and said "I don't 
care what it cost, tell me the details anyway." After he was done explaining the 
technical details about detonation gun coatings he then told Felix what it would 
cost and Felix got red in the face and went ballistic. :)

Unfortunately I did not get the gentleman's name from Union Carbide but he promised
to send me email so he may be on here as we speak.

Paul Lamar
 
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