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Sorry, but I'm not understanding you. I asked what was the proper steel to turn crankshafts from. You chose not to tell me for some strange reason. Now I'm the bad guy? I don't get it. Whatever, I joined the wrong forum I guess. Later.

OK great! 1144 I can work with! As for the clutch and flywheel, we in the RC aircraft hobby do away with those all the time, have for many years now, and have never had a problem. We also understand that once the engine is started, everyone stays behind the prop and not in front of it...

Hmmm, not sure what you're saying here. But, I've been flying RC planes for well over 30 years, and have converted many, many (more than I can remember) chainsaw engines for RC aircraft use, and have yet to ever have a problem. The only reason I come to this forum is to learn about actually...

Well, thank god in RC airplanes we don't have to worry about clutches! Put a prop right on end of a crankshaft and go flying. I guess the experience I was looking for was to create my own crankshafts, and learn from the experience. If I go using the cranks that's already there, I'll lose out...

Hi Luc, Bore is: 45mm, stroke is: 37mm Yes, they're originally chainsaw engines. That would be great, I would appreciate that. Actually, I have 4 of these engines. I'm going to use two of them as they are (as singles), and then will figure out how to combine two of them to make a twin...

Hello Folks, I'm an RC airplane guy who has a mini machine shop and have always toyed with the idea of creating my own gas engines for RC use in my airplanes. I'm getting ready to start my first project, here's what I've got going on at this point: I've got a 2 stroke engine, basically...