Does anyone have an idea whats wrong with this MM motor (VIDEO)

[suicideneil]

I would say it has a shorted or damaged phase within the motor based on that info- if another motor works fine on that esc, then 'tis the motor to blame. Castle should take care of it for you assuming it is a damaged phase, just so long as it wasnt self inflicted by using mounting screws to long- but that should be more or less impossible with the MMM motors as they have a shield inside the motor at either end to prevent such damage.

What motor is that anyway, hard to make out in the video?..

[Desert Rc]

Well the sheild is untounced as far as the motor screws go. I know castle will take care of me as they always have. I actually have a esc that needs going back as well....maybe I i will trade up for a MMP. It just sucks that I barely got even a day of runtime outta it. BTW its a 5700 that was being run in the new HPI blitz. On the positive note the Blitz is way more durable then my sc10s lol. It handled the power quite nicely.