ginorc :
I dont think my diff gears have stripped yet, but , I did have a spur gear go on one of my redcat 1/16 tremor trucks. I got the replacement one from them for cheap, and it is alot more rugged than the stock one..
I got a nice .095 draked trinity motor for it for $30!! at stormer hobbies,,, i just had to swap the carbs, because it came with a slide carb, and now I got a more powerful motor
oh and an update on my duratrax,, DONT BUY ONE... The pin inside the motor that turns the piston rod, it broke off inside.. now they are making me return the motor, which takes 6-10 days... uggggh