i am following this and this to calibrate my Arduplane. My current sensor (Fluke 33 True RMS Clamp meter) only reads 1.45 amps at 50% throttle on the ground and maxes out at about 2.5 amps.

This doesn't sound correct - i expected it to be drawing 10 amps or more at 50 %.

Any ideas ?

thanks

Damo