[Overdriven]

14/51 on 6s with the 2650 puts you at 65mph. That's generally over geared for a offroad setup. You're also not using he motor in it's intended fashion. The best thing for you to do is pick up a 4s pack and use that for offroad with your current gearing, use the 6s on the street. Either that or pick up a lower Kv motor, 1600-2000kv for 6s offroad. I run a CC1518 (1800kv) on 5s geared 18/51 in my LX1e and it's nuts offroad. Way too much power, but for an all around basher that can do around 50mph (with 18/51) it's alot of fun.