37 toother

[Doc Sprocket]

Without knowing your tire diameter, all I can do is guess at 5 or 6:1. You can go a little higher with a TAV. The TAV is belt driven, then you'd take a chain from there to the rear axle.
And yeah, it's a scream. I recently instaled a 4-pt racing harness so keep my crazy self from getting tossed on the bumps. I had put in a lap belt- good start, but not enough. Then I put in a shoulder belt from my '01 Montana. Better, but the retract mechanism couldn't handle the abuse and exploded. Enter harness. Way cool. Cheers!

 

[Kaptain Krunch]

Figure out your tire diameter, than we can tell you what sprocket you need. 50 may still be to small.

With a CVT, your secondary clutch is mounted on a jackshaft, and from there a chain runs to the axle.

 

[birdman58]

jackshaft come with CVT??

 

[T-man]

I could through in my two cents ... if you dont mind
if your tires are 15 to 18 high (ground to top) then a comet 30 series would work great. set the tention spring in the driven to #3 (more tention) to help with a longer torque time. setting the spring helps the engine deliver torque to the wheels for a longer or shorter period of time when you slam the gas.
This driven section ( larger pully thingy) will be mounted on a jack shaft, also on the jackshaft you could put a 14 tooth #41 sprocket that will then leed ( by chain) to your sprocket 54 tooth #41 on your axle.
If you buy a jackshaft from ebay then most of the time you will get an 12 tooth and a 14 tooth with it depending on who you get it from (read the descipions).
just thought I would through out this option to ya.. good luck

 

[birdman58]

how many teeth need to be on jackshaft sprocket??

 

[Kaptain Krunch]

how many teeth need to be on jackshaft sprocket??

we need to know your tire size.

 

[TOO FAST]

Go to the speed calculator on this site and you'll know your theoretical speed.
Now - high, low - well it all depends on what you are referring to - If we say something
is geared LOW, that means it has a HIGH gear ratio. So your both right.

 

[birdman58]

I ordered a 54 tooth sprocket (54 too much?) what will be the difference between 37 and 54, wont the 54 have more torque but less top end, and backwards with the 37?,....... and I ordered a torque converter!!. next is jackshaft assembly

 

[birdman58]

we need to know your tire size.

i put the ol tape on her today, and i got 10 1/2 in diameter, top of tire to ground..

 

[Kaptain Krunch]

i put the ol tape on her today, and i got 10 1/2 in diameter, top of tire to ground..

Cool, so first off, your gear ratio at the moment (10/37) will give you about 30mph. Now, thats a little high for off road with a centrifugal clutch. 54t will give you 21mph, and will be much better suited for off road.

Those tires are pretty small for off road...

 

[birdman58]

Cool, so first off, your gear ratio at the moment (10/37) will give you about 30mph. Now, thats a little high for off road with a centrifugal clutch. 54t will give you 21mph, and will be much better suited for off road.

what about with a TAV30 torque converter?

 

[Kaptain Krunch]

With the same gearing (10/54), and a TAV30, you will go slightly faster. It has a 10% overdrive (so in stead of 21 you would go 23mph). In addition to the overdrive, you can gear it slightly higher, because the TAV acts like an automatic transmission.

 

[birdman58]

Right, right, and the jackshaft has 2 sprockets right? one hooked to TC and the other to driven live axle? should the sprocket going to the live axle be the smaller of the 2 sprockets on jackshaft?

 

[Kaptain Krunch]

Right, right, and the jackshaft has 2 sprockets right? one hooked to TC and the other to driven live axle? should the sprocket going to the live axle be the smaller of the 2 sprockets on jackshaft?

Only one sprocket. Your primary clutch (one of the torque converter pulleys) Mounts to your engine, your secondary clutch (other torque converter pulley) mounts to the jackshaft, a sprocket also mounts to the jackshaft which runs to the rear axle. Yes, smaller sprocket on your jackshaft.

With a TAV, the jackshaft is built in, your just bolt the whole assembly onto the engine, and there is a sprocket that goes to your rear axle.

 

[birdman58]

Thanks man thats real helpful, cant wait to get it in

edit:would you run the 54 or 37 drive sprocket?

 

[Kaptain Krunch]

With a TAV, i would try the 37, with a clutch, definitely the 54.

 

[birdman58]

37 still give me plenty of torque on the low side? with TAV