exploding capacitators

[mattf77]

Hi
I have now had two capacitators explode after just a few minutes running. I have also had a couple of motors burn out completely.

i run an tamiya avante 2001 wth a modelsport xt-12 esc with a 17x2 motor and a core rc 4000mah 20c battery. is this battery too hot for the set up. The two motor burn outs have been 14t motors all brushed.

i have tried pinions from 16 to 20t and the same thing happens.

getting very frustrated, please help!