Taller gear

[quick-z]

I do alot of wide open riding on the ice I was thinking about trying a 15 tooth sprocket But not sure if I have enough power to pull it my mods are

 

pt midrange pipes

pt powerhead with 22cc domes

duncan pyramid reeds

kn-filter with lid removed

+4 timing advance thanks

[Bansheerider29x]

You should just try the 15t sprocket anyways...................whats the worst that can happen?

[PUSH THE THROTTLE]

You shouldn

[Ducman]

You probably wont pull 6th very well but may pull 5th faster than you pulled 6th with the 14 tooth anyway. I have seen gearing tricks for particular situations that work better using smaller or larger countershaft sprockets. I think the best all around gearing is stock or a 15 tooth front.

 

One thing to consider, something I learned on the dyno, is that you will get your best HP output in a specific gear. My banshee dynos about 4 hp higher in 4th than any other gear and 6th gear was about 10 HP down from 4th, and this wont change by putting a smaller or larger countershaft sproket. On a stock shee the best output is probably 3rd, maybe 4th so you should try to gear it so that 3rd or 4th is in the speed range that you want your best power. Some guys that race say 100 yards or a hill climb with a highly modded motor with the best power output in 5th gear might use a 12 or 13 tooth front and start in 3rd gear so they are getting the best power output using 3rd 4th and 5th gears in the race. If you are MX racing then being taller geared might be beter so you are not shifting as often using mostly gears 1-3, and lets say you are hitting the top of 4th gear in a straight away so you are maximizing acceleration in that area of the track as well.

 

Climbing the drag hill at sand mountain I can rev out in 4th gear but cant pull a strong 5th so 4th would actually go faster than 5th. If I had a 15 tooth vs 14 then I could still pull a strong 4th and be a couple mph faster. But in a 100 yd race in the sand I want a 14 or even 13 so I am reving out in 4th gear just before I cross the finish.