Brenner

Dave Snow sent me the motor constants for Neu's f3a motor, and I've re-run the numbers using this motor. This motor is a lot more powerful than the Hacker C50-14XL. The attached table shows a direct trade-off between performance and current draw from the battery pack. Obviously running this motor without good throttle management is going to cut the flight short before the end of the sequence. All of this aside though, it looks like all of the same conclusions apply, except that now it looks more and more like a 22X20 prop combination is the best choice for both the C50-14XL, and the Neu f3a.

Regardless though, it seems clear that the combination of the Neu and the Contra Drive are going to make a plane go like stink.