> On Aug 26, 2016, at 10:01 AM, Harold Wagenknecht wrote: > > Doran, > > ... Stay away from wankels.... Very hot exhaust.... Loud.... Sealing issues. > > Sent from my iPhone
Harold, you may be right about your above statement. Years ago one of my neighbors built an original Rotorway Helicopter and used a Mazda Rotary engine on it. I stood nearby as he ran the engine rpm fast enough to attempt an almost hover. That engine was screaming, the exhaust pipe turned red, I thought the exhaust was going to melt and fall off of the engine. It (the exhaust) was out in the open luckily. If it had been inside of a fiberglass cowling who knows what may have happened. I was very surprised to see that because I had known people who had Mazda rotary automobiles and I had never heard anything about this. The engine on the helicopter had a lite weight thinner wall tubing exhaust compared to an automobile exhaust manifold I'm sure. Anyway, it was scary looking and SCREAMING LOUD!
