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Old Mar 15, 2006, 08:18 AM
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Indianapolis, IN
Joined Sep 2001
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The nose is definately fidgety to get squooshed in just right. It took me the longest time. I don't see a clearly simpler alternative, other than cutting it short and using a carved/sanded block.

The BP-21 can handle a lot, depending on style and battery. Here's my test results:
Prop, V, A, RPM, Oz, MPH
8x4, 7, 7, 7740, 10, 29
8x4, 8, 8.5, 8650, 12.6, 33
8x4, 9, 9.8, 9260, 14.5, 35
9x5, 7, 10, 6400, 12.9, 30

The 8040 is a good 3s choice.

I can see why some use a 1047 or 9070 on 2s, but I limited my tests to 10a due to my power supply. I would estimate these props at 12-13a. Pretty easy for the right pack, and probably still fine for the motor.
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