Gear for 10" rim Minarelli (long engine)

[David (D.N.)]

Hi,
I drive at the moment with 13" Sr rim on my Rex.
Now I want to go on 10", cause of the weight.

Wats the best gerar für 10" on Minarelli (Aprilia SR long engine)
The most heare drive with 12-13" because of that the know how about the 10" gears isn´t there.

I want the best result for 150m sprints.

Thanks

 

[tiba_karotsu]

try an RF of 9 to 8:1, for 400m drag we use 7:1 RF with 10" tires.