The brass rotor blade keeps coming loose on my Super Mag 5. Whats going on?
Heat! There is a special rotor you need to use to prevent problems with Super Mags over 7 amps. The brass blade is larger and makes a circular loop around the center of the rotor. This makes it able to dissipate more heat. Also, the screw is epoxied in place so that it won’t come loose…ever! Some folks think they can put loctite on the screw of the regular rotor and make that work. Heat causes loctite to loosen! The brass blade will come loose while the motor is running and can cause major damage to the mag and /or the motor. When in doubt, put the high-temp brown rotor on it. They aren’t that much more money.
