Originally Posted by Dr Kiwi
Jack, your numbers suggest a serious over-load.. taking the 10.52v and 4495rpm... at best (using 800Kv rather than your graphed 828Kv) you are getting "RPM as % of Kv x V" of only just over 53%.. as you well know, target is around 75%.
What size prop is going to get you 75%....an 8x4???... that seems ridiculously small for an 800Kv motor.
with this numbers, this motor is only good for around 180 watts.
around only 90-95 watts out in the propeller, the rest is heat.