MMM Explodes into FLAMES!

[jpoprock]

Well... I still don't have my camera to take pix of the motor. So instead, here is a screen shot of a Neu motor, and I just drew on it to represent what the coils look like.

As you will see... the wire from one of the three motor wires is what is burnt looking... and I'm guessing that can't be good. So, did the ESC cause that to happen, or did the motor fail and fry the ESC? We'll probl never know.

I called and left a message for Neu to call me back late on Friday, but haven't heard anything yet. I'll follow up on Monday I guess. I'm assuming that the motor is going to need repaired. I doubt that I'll get lucky and it not "be a big deal". I've not been able to test the motor either. I'm scared to when I get my ESC back, for fear it could smoke the ESC! I'll see what Neu says.

[suicideneil]

Remember that the motor pulls current, the esc doesnt push it, so in likely hood a phase shorted out somehow, causing the esc to fry also (nothing like trying to deliver current to a shorted piece of wire to cook your FETs)...

Is there any damage to the wire/ insulation where it enters the motor can?

[jpoprock]

Hey Neil...

No apparent damage to the wires leading into the can, no. Yer talking about the Blue, Red, and Yellow wires right? They seem ok. But I noticed that whatever wire has blackened, it's that way thru the entire can because it's the same way on the opposite end.

SURELY this the motor is going to have to go in for repair to Neu right? I'd have to assume it's repairable too. It would need rewound, but i'm sure it can be fixed. The motor spins freely by hand, but that's doesn't mean much.

[Sammus]

My motor wasn't even plugged in...

[suicideneil]

The motor will definately have to be sent in for repair/replacement, but Im not sure whether Neu will cover it under warrenty though- they could argue the esc was to blame, or user error, or act of God- until you talk to them and they've had a look at it, its in the lap of the BL Gods...

[jpoprock]

Ok, here is an update on where I'm at. Still waiting on the MMM to come back from CC. However, something interesting has came about regarding the Neu. I sent pix to Neu and they responded saying that it looks like one of the wire leads had shorted, which means it will have to be sent back in for repair. He said that they would have to replace the stator.

A friend of mine was telling me that Neu now does something different with their leads because they were having problems with them shorting out on the can. This makes me think... what if the motor shorted out and THAT is what smoked the ESC?

YES, I was overgeared, and YES that isn't good. But as I've said before, I hadn't been running the truck hard AT ALL with those Moabs, only by PURE LUCK. My situation wasn't such that I was able to get on it. I was only putting around the yard and low to med speed, and only for about 20min tops. Sure the tires could have did the ESC in, but I don't think the ESC fire caused the motor to short. Wouldn't it seem more like the other way around? Just a thought.

Thanks!

[suicideneil]

Originally Posted by jpoprock

....This makes me think... what if the motor shorted out and THAT is what smoked the ESC?...

...I don't think the ESC fire caused the motor to short. Wouldn't it seem more like the other way around? Just a thought....

Im sure thats what I've said about 3 or 4 times....

[BL_RV0]

[TexasSP]

Originally Posted by suicideneil

Im sure thats what I've said about 3 or 4 times....

Sometimes this section of the RCM forums reminds me of another forum........ I'll let everyone figure out "which forum" by their own clever deductive reasoning.