RE: How Do I Prop Electric For Efficiency
Drop it to around a 16 x 10 and you'll drop around 15 or so amps, thrust will be around 16 pounds, and speed increase of around 10 mph. Flight time at WOT would increase around 2 minutes more. So just a hair over 4.5 minutes using up 80% of the pack capability.
Efficiency should go from around 78 to 87%, per MotoCalc.