ORIGINAL: Kevin Greene
I know that the engine forum is probably the best place to ask this question but since the G-62 is a recommended engine for this plane----What size prop and how fast does it turn with the G-62??? Power wise, how does the G-62 stack up against other engines in the 55 to 70cc catagory. (Like, say a ZDZ-60??) If the power is roughly the same then I guess that weight is the only drawback to the G-62. If that is the case then the engine could be converted to ignition. I'm not trying to hijack your thread...I just have the same questions as you.
Kevin
The G62 seems to be performing slightly better than a DA 50 on the same plane. HOwever the DA 50 is new and the G62 has a little time on it. I did not tach it, but it feels like around 7000 rpm on a Mezjlik 22-10, which is what Zenoah says it will do. I have never had a ZDZ-60 so cannot say for sure.
The G62 is relatively immune to muffler backpressure, is quiet because of the design of the exhaust port, and has a nice feature on the carb. There's a thumbscrew on the high end needle, making it possible to adjust from behind by hand it while the engine is running. This makes it so much easier to tune by ear, just turn it in until it reaches max rpm, then back it off until you hear an audible change. It's also very responsive.
The extra weight means nothing on this plane.
Tom Fawcett