Gearing for 8tooth drivers on viper

Scotty_33

Scotty_33

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Hello, I am puting a 1.25 ripsaw on my 2002 Viper, so i purchased some 8 tooth anti-ratche drivers. It has the stock gearing in the sled with no revers, so i was wondering what size gears i need to get to bring it back to stock???
 
A stock viper with 22/38 gears has 1.72 to 1 gear ratio, with 8 tooth sprockets it will have 1.92 to 1 with a 24/38 you would get 1.78 I think that may be close enough to stock but you can figure it out by, dividing top gear into bottom gear x9 divide by 8
I hope this helps I just figured that out this morning too so You may have more luck
 
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my stock viper had a 22/38 gears which is 1.73 with 68L chain. use a 23/37 which is 1.82 with 8 tooth drivers. this way you can still use your stock chain.
 
I was hopeing to reuse my stock chain, so which can i run?, 23/37 or 26/38? Also i'm not sure if this matters but i also have bender tripple pipes on it??
 
I think

Based on the way I was tought I think there are some errors above. Stock gearing on a viper is 22/38 which is 1.72. I was told that the correction factor when going from 9 tooth to 8 tooth drivers is .18 not .21 as stated. If you go to a 24/38 you can still use the stock chain and it will be nice and straight. You will end up with a corrected ratio of 1.86 which is real close to stock. Plus....it's a lot cheaper to buy the top gear instead of the bottom. Here's the calc: 38 divided by 24 = 1.58 X 1.18 = 1.86. I'm sure someone will disagree but this is the was I did it back when I was into this kind of thing.

Madmatt
 
1.125 is the number boys, at least the way I figure

stock gearing 22/38 = 1.73
with 8 tooth = 1.95
38 bottom divided by 25 top = 1.52 x 1.125 = 1..71
38 bottom divided by 24 top = 1.58 X 1.125 = 1.78

dont know about using the 68 link chain?
 
According to MaxxPerf Catalog.....24/38 is a 1.79 with 8 tooth drivers and 23/37 is the biggest you can go with a 68L chain.
 
..SNAKEBIT.. said:
1.125 is the number boys, at least the way I figure

stock gearing 22/38 = 1.73
with 8 tooth = 1.95
38 bottom divided by 25 top = 1.52 x 1.125 = 1..71
38 bottom divided by 24 top = 1.58 X 1.125 = 1.78

dont know about using the 68 link chain?
Click to expand...

That's how I learned it. I use 1.13 when doing my math. Close enough for me.
 
This is all pretty basic math...its about %.
9 Divided by 8 = 1.125
...so all you have to do is multiply your old ratio X 1.125 to get your new one with 8 tooth drivers, or just multiply the old ratio X 9 divide by 8 to get the new ratio.
 
Scotty_33 said:
Hello, I am puting a 1.25 ripsaw on my 2002 Viper, so i purchased some 8 tooth anti-ratche drivers. It has the stock gearing in the sled with no revers, so i was wondering what size gears i need to get to bring it back to stock???
Click to expand...

You probably know this already...If you're using anti-ratchet drivers, make sure that track is fully clipped!

I put standard 8 tooth drivers on my 2002 Viper last year and have no complaints about using the original gearing. Haven't heard anyone complain about it yet... :letitsnow
 
If you are only riding off trail or on the trails with short wide open runs I would suggest you try leaving the stock gearing in...you will have great throttle response and acceleration.
22/38 = 1.72:1 X 9/8 = 1.94. At 8800RPM[Benders] that would be a theoretical top speed of approx 97mph at a 1:1 shift ratio

If you are doing a lot of lake running I would suggest going to a 24 top gear + a 70 link chain with your stock 38 bottom gear...make sure you get the proper Hyvo chain + gear for your sled!
24/38 = 1.58 x 9/8 = 1.78. At 8800RPM that would be a theoretical top speed of approx 106mph at a 1:1 shift ratio.

The Viper with stock pipes, gearing, + 9 tooth drivers would have a theoretical top speed of approx 105 mph at 8400RPM.[at a 1:1 shift ratio]

JMO
 
800vmax4 said:
If you are only riding off trail or on the trails with short wide open runs I would suggest you try leaving the stock gearing in...you will have great throttle response and acceleration.
22/38 = 1.72:1 X 9/8 = 1.94. At 8800RPM[Benders] that would be a theoretical top speed of approx 97mph at a 1:1 shift ratio

If you are doing a lot of lake running I would suggest going to a 24 top gear + a 70 link chain with your stock 38 bottom gear...make sure you get the proper Hyvo chain + gear for your sled!
24/38 = 1.58 x 9/8 = 1.78. At 8800RPM that would be a theoretical top speed of approx 106mph at a 1:1 shift ratio.

The Viper with stock pipes, gearing, + 9 tooth drivers would have a theoretical top speed of approx 105 mph at 8400RPM.[at a 1:1 shift ratio]

JMO
Click to expand...


How does track height affect this equation? Especially with a 1.5 or 1.75" track?

Or am I thinking too much like a car or truck with overall tire size?

Thanks! :2strokes:
 
midland_yammer said:
You probably know this already...If you're using anti-ratchet drivers, make sure that track is fully clipped!

I put standard 8 tooth drivers on my 2002 Viper last year and have no complaints about using the original gearing. Haven't heard anyone complain about it yet... :letitsnow
Click to expand...


I put 8 tooth drivers on mine and lost top end. I d like the fact that my studs aren't chewing up my exchanger anymore though ! Common rule. The 8 tooth drivers are a lot smaller diameter and the cold, wide track has to bend more causing it to turn harder with less mechanicl advantage.
 
The stock Viper really can't pull the stock gears anyway. With the larger fan effect created by the taller lug of the ripsaw you will lose a little on top. I really like stock gears with 8t drivers, but I am 144. I agree with 800vmax4 depending on what you want to do, I would go with . . .

Off trail boondocking - Stock gears (22/38 68L)
Crossover sled, loose snow trail - 23/38 70L
Hard pack trail and lake running - 24/38 70L

I am guessing that this is not a lake sled, or you wouldn't be going with the ripsaw.
 
Ding said:
The stock Viper really can't pull the stock gears anyway. With the larger fan effect created by the taller lug of the ripsaw you will lose a little on top. I really like stock gears with 8t drivers, but I am 144. I agree with 800vmax4 depending on what you want to do, I would go with . . .

Off trail boondocking - Stock gears (22/38 68L)
Crossover sled, loose snow trail - 23/38 70L
Hard pack trail and lake running - 24/38 70L

I am guessing that this is not a lake sled, or you wouldn't be going with the ripsaw.
Click to expand...

Does this apply to a 144 ripsaw as well?

What are you running? :bump:
 
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