Apollo:
I was looking at the hpi website under the new .18 SS RS4 3 and the instructions show the following gear ratios:
Pininon gears:
#76979 RED 19T
#76983 RED 23 T
Spur Gears:
#76843 43T
#76817 47T ( you gave me towerhobbies link for 39T spur) is this the right one you are using? Or was it a mistake?
Thanks