Definately change the ratio. MRRC do an 8T plastic pinion or if you really want to go for Proslot do a 8T pinion and a 30T crownwheel (from the GT1 Toyota).
Be a little careful with the pinion a take a small round needle file to the inside to allow it to slip on to the motor output shaft a little easier. The plastic is a little brittle and might crack.
A Ninco NC4 would be a good move too. You may need to trim around the motor pod though.
Mr C
Be a little careful with the pinion a take a small round needle file to the inside to allow it to slip on to the motor output shaft a little easier. The plastic is a little brittle and might crack.
A Ninco NC4 would be a good move too. You may need to trim around the motor pod though.
Mr C