The spurs on the last diff box I had was striped so badly that my buggy won't move.I thought it was because when I land jumps the cement scraps the spurs.On my new diff box I placed a piece of foam under the chassis where you can see the diff box spurs.After a few minutes running my buggy,it won't move.I saw that the spurs on the diff box was striped a bit.Whatever is causing my diff box spurs to be striped has to be from something in the buggy.I did run my buggy on my front lawn so maybe something is stuck in the buggy.I checked the diff box.Where else should I check?

which buggy?...which diff box???...there has been people that have had to replace the entire diff to fix gears going south....

Spur gears kept burning out on mine because my chassis had cracked and my engine was slightly tilted. A couple washers under the engine mount screws fixed that. Just make sure the gears are meshed right and that the spur gear is parallel with the engine gear. The plastic gears can burn out in literally minutes if they aren't meshed right.

Im talking about the diff box in the Forza.

roll your car backward and forward, it should be smooth and no binding at all. If you can get it smooth your gear will last.

Andy

It doesn't roll smoothly when I roll it backwards.Please don't tell me I have to replace something.I probably spent more than what the Forza is worth on replacements now.