[NSRCA-discussion] Brushless Motor Tester

[Ronald Van Putte]

While at the F3A WC/Nats, I was talking to someone (can't remember  
who), about a brushless motor tester.  By hooking up this tester to  
all three leads of the motor, you can test the motor for proper  
functioning.

This has become an issue when several pilots had speed controllers  
burn up when the battery was hooked up to or disconnected from the  
speed controller.  When the flaw is present and the motor is put in  
one or more "sensitive" orientations, the speed controller burns up.   
This happened to one of the Norwegian competitors on the first day of  
the Prelims and we watched helplessly as the nose of his airplane  
caught fire.

Strangely, if the motor isn't stopped in one of these "sensitive"  
orientations, it appears to function normally.  An unnamed pilot, who  
rode to the F3A WC/Nats with me, burned up three speed controllers in  
the last few weeks before the Nats, before replacing the motor in his  
Black Magic with another motor from the same manufacturer.

Can anyone identify the source of a brushless motor tester which is  
available for our brushless motors?

Ron Van Putte