Collided with something when running you car? We have all been there!
A Common problem with RC cars is, if you do hit something hard the weight of the car can shift the motor which might result in the gears either becoming unmeshed or meshed to tightly together.
Simply remove the motor cover and by feeding a piece of paper between the spur gear and the pinion you will be able to tell if the gears are either too lose or too tight.
In the video below Ryan takes us through this easy way to check the gears on the motor after a crash to avoid damaging the motor or stripping your gears.