Thread: Discussion new motor series
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Old Nov 18, 2012, 08:20 PM
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Quote:
Originally Posted by Dr Kiwi View Post
I am concerned about the data sheet posted in Post#22.. that 10x8 EP is seriously over-loading the motor, such that efficiency is down to 54%! That is why I questioned the duration of the test.. to see when the 50C temperature was reached. 240W through a 54.5g motor is asking for trouble and on the higher voltages those GWS RS props are exceeding their safe RPM limits (probably no more than 40-50,000 rpm/diameter.. yet these tests are running 'em at 60-70,000rpm/diameter).

I also question the thrust figures.. DriveCalc, Badcock, MotoCalc, FlyBrushless etc have decent "Thrust from RPM" data.. the figures posted in this table are as much as 20-30% higher than can be expected from prop x at RPM y.
These are reference, we are no load test.
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