Goedendag
"Some of us may have run across a brushless motor that has questionable operation, perhaps after overheating it, or after crash damage. It may even have come from a swap shop. The question is "Do you want to connect it to an ESC" and risk possible damage to the ESC? ..."
Several simple methods for testing:
"Dry Testing" brushless motors - WattFlyer RC Electric Flight Forums - Discuss radio control eflight Vriendelijke groeten
Ron van Sommeren
brushless motor building tips & tricks
diy brushless motor discussion group
Drive Calculator download & discussion group