oldbassard

Hey Gang

Thanks to the help of some members here I found the way to extend my propeller drive on electric motors. I ordered the 4mm X 20mm extensions from BP today. After thinking about it, if the propeller is out of balance at all, with 20mm extension., Wouldn't it be really hard on the motor case bushings? I am not sure about this. Should I try to make a carrier bearing or is that not necessary? Another thing I have no idea about is, does an out runner seem to produce excessive heat as a gasoline engine does after shutting down. The reason I ask this is because I am building two Williams Bros. radials to put inside the cowls and I am concerned about heat off the motors melting the dummy engines after shut down.

BTW, I have no one else to brag to about it, but I have a grandson on the way

Dr Kiwi

If you run your motors conservatively they should not get too hot during running, nor after shut-down, Run 'em at no more than 40C and they won't exceed 50C after shutdown.

oldbassard

Thanks for the information