Viper Gearing

[03viper159]

Anybody got a kick #$% gearing setup for a mountain viper with a long &%$ track

 

[snomoguy]

I am running a 21 top 42 bottom.....you can still use the same chain.

 

[03viper159]

what is the stock setup 22 42 isnt it?

 

[ak ryda]

You should just cheat like I did and call tom hartman at Hartman Inc and get a custum set up from him. I got a custom helix, primary and secondary springs, and new rivets for under $200 to my door. It would have been cheaper to purchase the items separately but I have no problems what so ever for paying extra for someones knowledge and expertise.

 

[03viper159]

hey how did that clutch kit work for you

 

[whitee]

Im running 20 42 with a 159

 

[bolin22]

02' viper with 141 2" .i run 22 42 with 8 tooth drivers ~(20/42 with 9's)~ and hole shot is great but top speed suffered...not a big deal when we mostly boondock anyway....

 

[03viper159]

did u guys have to get a shorter chain to go to 20

 

[mountain_mod_viper]

did u guys have to get a shorter chain to go to 20

Add up the two numbers of the gears 21+40=61
If you're 61 and up, you can use the stock 70L chain. 60 and less=68link chain.

I've got 19-42 with the 8 tooth 3.0 pitch drivers and a 162" attack 20. When I had the 9 tooth 2.52 drivers, the 19-42 worked well also @ 2.21:1 ratio
If you've got 8 tooth, I think that 21-42 @ 2.25:1 ratio works well and you can still use the stock chain.

Stock mtn vipers are 21-40 gearing @ 2.14 ratio. I'd go bigger on the bottom, before going smaller on the top, that way you don't need a new chain.

Hope this helps. There's also a good gearing chart on Mtn Performance's website

 

[..SNAKEBIT..]

yea I printed it out and stuck it in my notes
shows gears and what chain it takes to run
TY should have that? maybe we do?
also the calculator on yama info is cool

 

[ModMMax]

I'm using 20/42 with a 162 by 2 by 15 with 9 tooth extraverted drivers. On a MM. Hope this helps you.