Gearing is dire with the 61/19 combo. If your running the tamiya silver can motor. Buy the speed tuned gear set (spurs) and the 22t, 23t, 24, 25t pinions and gear it like 58/22 and the speed is much better. My TT-01 has the carbon upperframe, aluminum propeller shaft, turnbuckle tierod set, aluinu knuckles, bearings and a tamiya hi-torque servo saver.