Transmission spins but truck won't move

[Nkirbs135]

I have a problem with my EXx Axe.
I press the throttle on my transmitter and the motor,the pinion gear and spur gear spins, but while my truck is on the ground... it won't move even at full throttle.
Has anyone encountered this problem before?
If so, what was the solution tom the problem?

 

[WithinU]

My first guess would be the clutch isn't tight enough?

Do the wheels and tires spin, well, if you suspend them in the air?

 

[Nkirbs135]

It wasn't the slipper clutch. The problem was the plastic driveshafts... I replaced those with metal ones... that's the solution to said problem.

As for the wheels, they spun but took a while for it to reach the desired rpm before the fix.

Thanks for the help, WIthinU.