Hello Shlomi,

I find your testing very interesting. Your test mount is very nice! I hope you will do much more testing and share more information, but Woodie is correct. If you already know this, please forgive me:


When testing electrical systems, you must measure the power in and the power out. The power in is the volts and amps. You can see the power out from the RPM of the propeller.


Also, for the motors you are testing, many people here on RCU have already tested these motors and propellers over and over. I believe the consensus is:

1) Inrunners are more efficient, but most people can not tell the difference during 8 or 9 minutes of practice.
2) The 20.5 x 14 propeller is the best overall compromise size for a 5000g/3000 watt e-system.
3) Outrunners are preferred by many because they require no maintenance.
4) The 30-10 has much more top end power than the geared Hacker motors.


If you search more on RCU, I am sure you will find much more information and many more opinions.



Anyways . . .




What kind of plane are you flying using electric?

Is electric or glow more popular in your club?

Is this your first electric plane?


Just curious, and I hope I was not saying something too obvious



Joe