I had a traxxas SRT with a delrin top gear and alumnium idler, it was good enough to handle 1200watts from a VXL 3s setup. not saying the delrin is good for everything, but worked in a racing truck
Work because i gotta, play because i wanna
People here hate Nitro, I love it. I start it, run it about 50 ft from me and it dies, I go after it. Perfect exercise