RE: elect Ulmer-rc blink conversion?
z06kal, an original KillerBee will turn a 4.2x4 prop 30,000. Shave the insides of the piston skirt down to paper thin and lap the crank to the case if needed. A Norvel AME will produce similar rpm on the same prop. The Cyclon and Fora .049-.061s will put out more like 35,000. The King of the Hill is the piped GZ .061, I've seen 42,000 out of it. That's 700 cycles per second. It has a Satanic howling sound to it.