Problem with KitBot: Motors move at different speeds

[dradel]

Have you tried calibrating the speed controllers?

[mastachyra]

We are having the same problem. We found that one of our motors had a bad connection. Check the voltage on both sides of your motor controllers while the motors are running.

[Sohaib]

We had a problem with speed controllers malfunctioning last year. Drive the robot forward at full speed (and assuming your using the kit Talon SR Motor Controllers) the light should be solid green when moving forward at full speed. Do this on blocks so you can observe the lights easier. If you have one of the lights on the motor controllers for the left side are different from the rest, your problem is either a connection, or the motor controller itself.

[Alan Anderson]

You can do some troubleshooting by only powering one of the motors on each side at a time. Remove the circuit breaker from the power going to the other one. See if one of the motors is turning slower with a given throttle command.

The advice to calibrate the speed controllers is good.