@Rocket We don't know what's wrong with our bot, because the bot works fine but everytime we compete with it; it starts to act up by stopping the left side wheels and the right side works but the left side stops and everything function just fine and we use all aluminum for the bot too and we have six motors powering the wheels and 2 motors for the ball shooter and 1 motor powering the ball intake and we aren't using v5 yet and we are using two batteries and a battery snap as well and the 6 motors for the wheels are high speed and when we are messing with it, it works fine but once we compete with it, it stops the left side and it even broke the breakers in the brain.
Punctuation is awesome :)
It could be a hardware problem, an electrical problem, or a software problem. With reasonable gearing, 6 motors is plenty to run a normal chassis for two minutes, so you should probably test for each kind of issue independently.
The most common hardware problem that causes stalling is friction. Take your motors off and give your wheels a spin. If they only free spin for a second or two, there is too much friction. You will need to diagnose what is causing the friction and fix it. (Usually a dead bearing flat or an over-tightened chain from my experience.) If the wheels spin for over 10 seconds, friction isn't the issue.
It could also be a software problem. I'm not going to pretend to be an amazing coder, but there are plenty of them on the forum. Share your code :D
And if it's an electrical issue, there's not as easy a way to diagnose it. If a motor is blown, that's easy enough to test for (just write a test program that spins each motor, one at a time), but the motors could be old and spinning at low power, there could be a physical problem with the PTC or the motor controller, or even with the brain. If it is an electrical issue and the motors are all working well, your best bet is probably just to replace all of the electronics on that part of the robot.