MMM/2650 + Slash 4x4 = FIRE!!

[Pdelcast]

Originally Posted by kazuaki

1) What the heck could cause this?

2) Obviously the ESC is toast, but should I be worried about the motor? In the Slash 4x4 the ESC and motor are pretty close together and the endbell of the motor is blackened from the fire.

3) Is there any way to be sure my lipo is OK? It doesn't have any visible damage and it still reads full voltage.

Unfortunately, at these power levels when anything goes wrong, the ESC usually takes the brunt of failure -- and at these power levels the failures are usually spectacular.

It sounds like the ESC took the damage, I wouldn't worry about the motor -- it's probably fine.

If you Lipos show normal voltage, they are probably fine too.

Contact tech support by phone, and let 'em know I told you to call in. We'll see if we can expedite your service.

Thanx!

Patrick

[kazuaki]

Thanks Patrick! Given the relatively light weight of the truck (5 lbs or so), this must be a fluke right? I mean, the connectors were on correctly and the battery has plenty of power for the setup. I just want to make sure I don't need to baby this setup in the future to avoid any issues.

[Pdelcast]

Originally Posted by kazuaki

Thanks Patrick! Given the relatively light weight of the truck (5 lbs or so), this must be a fluke right? I mean, the connectors were on correctly and the battery has plenty of power for the setup. I just want to make sure I don't need to baby this setup in the future to avoid any issues.

Hard to say for sure what went wrong -- but we see a small percentage of "infant" failures where an ESC will fail for no good reason. Usually those failures can be tracked to a failure of a single MOSFET, which cascades through the ESC. Why the single MOSFET fails isn't always obvious -- can be caused by a cracked solder joint, a bad circuit board, or a manufacturing defect in the MOSFET itself.

Usually the on-board protection (over current and over-temp) usually will prevent failures in most "bad" setups.

So it is probably OK to assume it was a fluke failure.

[kazuaki]

Originally Posted by Pdelcast

Contact tech support by phone, and let 'em know I told you to call in. We'll see if we can expedite your service.

Thanks Patrick. I called in and spoke to a very helpful gentleman, who said I would be taken care of. Unfortunately, he said the MMM's are out of stock, so I have a bit of a wait. Any idea when those are going to be available?

Thanks again!