Peter Cowan/Lexi Cameron wrote:

So, here is an item from the 2nd quarter 1985 issue of  "The 170 News". The heading was "WANKEL ROTARY ENGINE CONVERSION" with a write up on the aircraft engines provided by Duncan Aviation Engines from Comanche OK. They offered single and dual rotor, 27 to 70 cid, 40 to 350 hp engines. A 200 hp engine for the 170 weighs in at 240lbs, has a 3000 hour tbo and sold (1985) for $4000.

Where are they when we need them?  1985 eh?

Count your blessings that Mr. Duncan  is gone :-) More than one person lost
his money sending it to Mr. Duncan.

Paul Lamar
 
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