help please

[vintage88]

i have a gold pan im running a stealth with the newer topshaft and slipper with an 87 tooth spur gear and a 13turn double(venom fireball) what pinion gear should i start with im not 100% sure on tires yet but no 2.2s for me im staying as vintage(cheap) as possible lol

thanks everyone

tim

[Charlie don't surf]

Run something under a 20t if you are running quick speeds, short full throttle bursts under load like a tight corner exit or slow doubles etc you would want to go smaller ( 17-18 t ) to keep the motor
temp and strain down-

[vintage88]

thanks