spur gear!!!!

i have a stock revo 3.3 and the spur gear strips almost every single time i run it. i was wondering if i should get steel or not or if something else is wrong?

Make the gears are meshed right use a piece of paper and stick it between the spur and clutch bell and turn them and make it so the piece of paper comes out when you turn them and also use loc-tite so the motor doesn't shift when your driving I would suggest the blue because anything stronger than that and your not going to get them out.

also, you should check to make sure your slipper clutch isn't ste too tight. try this link, it shows how to set it the right way on most nitro setups.

http://www.traxxas.com/support/index.php?action=artikel&cat=89&id=106&highlight=adjust%20slipper%20clutch

Adjusting the slipper


Slip a 2.0mm driver into the slipper shaft that exits the front of the
transmission to lock the shaft for adjustment. Next, use the 8.0mm
tuning wrench to adjustment the slipper nut. Be careful to
only use small adjustment changes at a time. The slipper
clutch is very sensitive to adjustments.

High Bite TracksOn high bite tracks that offer a lot of grip, a properly adjusted slipper can help prevent the front end from lifting up when accelerating out of a corner. This will keep the front end down, preventing a push or under steer.

Low Bite TracksOn slick tracks or surfaces that do not offer much traction, the slipper can be loosened enough to limit wheel spin to keep the truck stable under acceleration.


Note the orientation of the bevel washers located between the slipper
nut and the bearing within the spur gear. The outer edges of the
washer should touch each other in the middle for proper operation.

A good starting point for the slipper setting on the Revo is threading the nut to where there is only about 1/16-inch of the slipper shaft sticking out from the nut. Experiment with different settings for your track conditions to obtain optimum traction with as little wheel spin as possible.

Caution: Be careful not to run the slipper extremely loose or tight. If the slipper is set too loose, this can cause excessive heat build-up and could result in a melted spur gear. If the slipper is set too tight, not enough slip will be allowed to protect the spur gear from violently engaging with the clutch bell. This can chip the teeth of the spur gear and will eventually strip all of the spur gear’s teeth.