Jeepkid
I wanna be Dave
Pretty hard so far. I messed around on my course that I've broken several small gears and axles on for a pack and they held up fine. I also did a bunch of full throttle climbs on the granite boulder in my front yard, along with some straight up climbs for 2 packs. My motors seem to stall out before I break the gears, I need better motors though.
What turn motors are you running. Also your tire diameter. Wieght of rig. Just tryin to get an idea of how hard the plastic gears are working