Mamba max getting HOT fast! - RC-Monster Forums

MetalMan · 11.27.2007, 02:36 PM

Just an idea to throw out there, is it possible that the screws holding the motor to the truck are penetrating the motor windings? That would explain the heat, and the cogging.

Happywing · 11.27.2007, 03:10 PM

You did disable the BEC on the MM, correct?
What is your gearing?
What surface are you running on?
Any fans on the MM?
Do you brake a lot?
What are your MM settings?

rootar · 11.27.2007, 04:02 PM

Quote:

Originally Posted by MetalMan

Just an idea to throw out there, is it possible that the screws holding the motor to the truck are penetrating the motor windings? That would explain the heat, and the cogging.

DANG i bet thats what it is! i thought i needed to trim those some because i knew theyd be close but they could be touching.

-i did disable the mm bec
-gearing is 13/54 its only geared for like 33-35 mph (low compared to everyone else)
-smooth concrete parking lot for testing
-no fans, a rcmonster heatsink on the motor thats all
- the mamba max is setup right according to the book (high start power and all for the 4wd and heavy truck)
-truck is just barely under 5 pounds

ill check and cut my motor screws off 1st and then see how it goes from there.

lincpimp · 11.27.2007, 04:17 PM

I did the same thing with a feigao, screws were too long and it did heat up very fast, plus my battery almost puffed! I tried shorter screws, but the damage was done and I had to replace the motor. I did it to a 7xl, but I am sure all of the motors would react the same. Hope that you did not kill the 9l, it is a great motor for that application!

MetalMan · 11.27.2007, 05:02 PM

Quote:

Originally Posted by rootar

DANG i bet thats what it is! i thought i needed to trim those some because i knew theyd be close but they could be touching.

ill check and cut my motor screws off 1st and then see how it goes from there.

It shouldn't be a problem if they are just touching. The windings have a coating on them (epoxy, I think), on top of the normal insulation they have. So to get to the bare wire you'd have to push past the epoxy and thin wire insulation. But it's very possible that when the screws were tightened down the wires were punctured.