Jeb
Well-Known Member
- Messages
- 337
- Location
- West Glover, VT
I played with upping the pinion gear to a 22 tooth thinking it would ease some torque and push it to the top end. It did give the truck a ridiculous top end speed, which you would never be able to control on a short course, but I immediately started stripping spur gears. I stripped my third in 2 weeks today and after further inspection realized it had bent all the teeth over on the pinion gear. The spur wasn't totally trashed so I put the original 18 tooth pinion back on. It was noisy, but it ran free of any binding. It also dramatically reduced the motor temperature. I was able to limit the torque by backing off the slipper clutch and it actually was much more drive-able on the course we race on. Seems the big pinion was an unnecessary upgrade for my needs and put un-needed stress on the motor and drivetrain. Here's a short clip of running it back with the 18 T pinion. Yes you can still hear the spur, but I might as well just milk it.