I refer to another thread where people were mentioning 15000 RPM and so forth. The range used in the article (10,500 to 11,500) are the torque ranges of most engines and the usefull RPM ranges for most engines. Those people that are operating at higher RPM ranges are confusing high noise levels for power and thrust.
Basically true, and certainly so about the "sport" type engines 95% of us run. There are some engines designed specifically for racing that run 15,00 to 25,000 rpm quite happily however.
Running most of our engines at 15K will only result in less applicable power and a much shorter life.
Dennis-