16 tooth sprocket

[randallp1]

this is a question ab the sprocket best suited for me. my buudy told me to ask b4 i go and buy them. i am duner with a bunch of aftermarket: 426 11:1, stage 3 cam, ported polished, 39 fcr, lightened fly wheel, airbox eliminator and a rev box. i have skat trak hauler ten paddles and im trying to see if i could still launch from 1st gear hard. im sure it will slow me down but all the work i have with stock gearing?????

[bjg696]

Well if you step up that far on the front, its gon cut down on ur bottem end, but it will scoot on top end. IMO, i would stay stck in the front, and play with the back. B/c 1 tooth up or down on the front, is like 2 or 3 up or down on the rear.

[NacsMXer]

How big are the rear paddles you are running?

I run 16/39 gearing and I love the 16T front....really stops you from zipping through each gear so fast. But I run 18 inch rears, so it still pulls hard down low. I can still do 2nd gear starts with ease.

If you are running like 20's or 22's, then you might be bogging the motor a little bit in the sand. 1st gear you will still be able to launch just fine, but the motor will be lugging around a bit at slow speeds until you get your RPM's up.

[bbender85]

if you're making good power you could probably do the 16t; if you find it bogging on the launch, air up a little bit for more tire spin. and for <$15 for a front sprocket it's at least worth the try IMO.

[hypersnyper6947]

Considering how cheap and easy to change they are, buy both and change them when your riding and see what you like better.

[powermadd400ex]

hmmmm i might try this, i find my self just running through 3rd and 4th gear to quickly.

[randallp1]

well i only run 22s i have 10 paddles 22x10x8 on .125 aluminum douglas wheels. then i have the same size 4snows on steel wheels. i have the best holeshot out of anyone i run and the bike never bogs(with 4snows). I had like a off brand cam called a magnum can and it was their stage 2 and my bike is in the shop getting the stage 3 hot cam. i have not run it with the cam or the carb(i ran it but the jetting was off) so i hope the 16th will be like im running a 15th. BUT if i stay with the 15 tooth what back sprocket could i get to give me more top end? 15/38 stock.

[NacsMXer]

Originally posted by randallp1
well i only run 22s i have 10 paddles 22x10x8 on .125 aluminum douglas wheels. then i have the same size 4snows on steel wheels. i have the best holeshot out of anyone i run and the bike never bogs(with 4snows). I had like a off brand cam called a magnum can and it was their stage 2 and my bike is in the shop getting the stage 3 hot cam. i have not run it with the cam or the carb(i ran it but the jetting was off) so i hope the 16th will be like im running a 15th. BUT if i stay with the 15 tooth what back sprocket could i get to give me more top end? 15/38 stock.

15/36

Very similar to the 16/39 I run. 15/36 yields a 2.40:1 final drive ratio. 16/39 is a 2.44:1 ratio. For reference, stock 15/38 gearing is 2.53:1.

[hypersnyper6947]

Originally posted by NacsMXer
15/36

Very similar to the 16/39 I run. 15/36 yields a 2.40:1 final drive ratio. 16/39 is a 2.44:1 ratio. For reference, stock 15/38 gearing is 2.53:1.

What is the ratio for 13/36

[NacsMXer]

Originally posted by hypersnyper6947
What is the ratio for 13/36

2.77:1 ;)

[hypersnyper6947]

not trying to take over thread but what formula do you use to calculate the gear ratios

[katch26]

divide the big number by the little one

[hypersnyper6947]

easy enough thanks

[randallp1]

i just wanted to add that i weigh 240 and i just added another 5lbs to the bike with an +3 extended swingarm. im sure that everything is a factor. does anyone have any dyno info on the 426 kits with the fcr carb. i decided to keep the front 15th but change the back to a 36th. let me know what you think.