ORIGINAL: CGRetired
Yeah, I closely monitor my RPM. for instance, my OS 1.20 AX engines never ever are allowed to go above 10k. I turn a 15-10 prop with no problems and that pulls the plane along nicely. Peak RPM around 9800 with that prop. I also may use a 16-8 if I want a little more pull. That peaks just at 10k.
The smaller engines.. never above 11K or so. And, I always run them on the rich side of lean. I'd rather clean the oil off of the wing than flakes of metal. They fly just fine with that RPM range, with the proper prop, that is.
CGr.
G'day Dick,
Well said, it seems most people on here MUST have their engines running at maximum plus a 1000 RPM, before they think the particular engine is any good, most engines 2 stroke or 4 stroke have an ideal RPM, & the engine should be propped accordingly.
Bravo Dick, me old mate.
Hope everyone had a wonderful Christmas, & will have a flying new year.
Sorry to hear about you weather over there, it's 4.55pm & 36 celcius here now, you better get on that plane & get over here real quick.