Gearing question

[kartkiller]

I have a jackshaft sprocket with 12 teeth and a axle sprocket of 72 teeth. My Kart also has 15" tires. The calculator comes up with a top speed of 27 mph but how does my torque converter affect that estimate? My spring is set on #2

Thanks

 

[toofarnorth]

If you have a torq-a-verter it has a 10% overdrive so you'd just ad 10% to your engine rpms for the speed calculator if it was 3600 it would be 3960 with the TAV. A TAV uses a 30 series torque converter with a 6"driven pulley, if you have a 7" 30 series they do not have an overdrive.