Originally posted by Slayer PR
Can someone please tell me how the R40's gear chart works ?
The lower gear ratio gives you more speed or the higher ?
I believe lower gear ratio gives you more top end...
If the R-40 is your first nitro car, Then you now that the spur/ pinion combination works awesome, but I you want more speed it's better to try changing the pinion T number than the spur T number, so If you want your car to have more top end and less torque so you don't spin it out on a turn I recommend you go up a tooth on the pinion gears. Your stock ratio is:
First gear: 48+16 = 7.260 ratio
Second gear 45+19 = 5.731
What I did to improve my speed is this:
First gear 48+17 = 6.832
Second gear 45+ 20 = 5.445
Afterwards I moved up to the lightweight 2 speed tranny, which has a greater acceleration.