blown esc

[hemiblas]

So if my math is right a 15T pinion would land us in the 79mph range. Yeah thats a lot. What type of batteries are you running?

[wyattroa]

I am just trying to figure out why it ran cool the first pack. I am running 2 6s 5000mah 30c lip in parallel.
Robert

[nuz69]

2 6S 5000mAh in parrallel !!! That's very heavy, especially for a truggy geared for 100 mph With your crazy gearing, I am surprised that the ESC blown before the tires ^^
Seriously man, a truggy is not design to go over 45-50mph in normal ways, next time try with a 11T pinion, the castle 2200Kv run good geared for 35-40mph, if you want more speed you need to get a bigger motor, in order to reduce the amp draw.
You are right, if the gearing is to small, the motor can overheat if the throttle is continuously full, but it would be with a 4-5T pinion !
Good luck for the next time anyway.