vjaqua wrote:

Paul and others. Since you are doing a lot of work with planetary reduction
drives,
I thought you might find this of interest. The model airplane free flight guys are

getting pretty sophisticated. The engines that they are using for a 5 second
vertical climb are 0.15 cu in dispacement churning out at least 1 BHP at
roughly 30,000 rpm Needless to say the prop issues are pretty important.
This is one of the current approach, stepping down to 9,0000 rpm.
Reporrtedly, they are having serious vibration problems. Vance

 
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