sxvipersman
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- 2008 FX Nytro RTX Anniversary Edition
1979 Enticer 340
2009 FX Nytro XTX
Installed a 1.6 cobra 128" I have lost 500 rpm. Which way do I need to go with gearing to recover rpm. And do I need to change the chain.
2008 nytro rtx.
2008 nytro rtx.
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1988 vk 540
need to put in one tooth larger lower if possible to make a taller ratio.
sxvipersman
Pro
- Joined
- Mar 19, 2006
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- 198
- Age
- 48
- Location
- Dover Centre,ON Canada
- Country
- Canada
- Snowmobile
- 2008 FX Nytro RTX Anniversary Edition
1979 Enticer 340
2009 FX Nytro XTX
So go to a 22 top great to be able to pull More rpm.?
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- 2016 apex xtx
2011 apex xtx
2009 phaser rtx/x
1997 et410t/r
1988 vk 540
you actually would want to go 20 on top to gear it down.
stock is 21/39 = 1.85 to 1 gear ratio
stock mtx is 20/40 = 2 to 1 gear ratio
what i am suggesting is go to a 21/40 = 1.90 gear ratio or you can go with a 20/39 = 1.95 to 1 gear ratio to get your rpms back in line with where they should be. i suggest the 21/40 as you are not down by much.
i cannot tell you if the 21/40 will work with the stock 68l chain but the 20/39 will for sure.
stock is 21/39 = 1.85 to 1 gear ratio
stock mtx is 20/40 = 2 to 1 gear ratio
what i am suggesting is go to a 21/40 = 1.90 gear ratio or you can go with a 20/39 = 1.95 to 1 gear ratio to get your rpms back in line with where they should be. i suggest the 21/40 as you are not down by much.
i cannot tell you if the 21/40 will work with the stock 68l chain but the 20/39 will for sure.
sxvipersman
Pro
- Joined
- Mar 19, 2006
- Messages
- 198
- Age
- 48
- Location
- Dover Centre,ON Canada
- Country
- Canada
- Snowmobile
- 2008 FX Nytro RTX Anniversary Edition
1979 Enticer 340
2009 FX Nytro XTX
Thanks gear on order.you actually would want to go 20 on top to gear it down.
stock is 21/39 = 1.85 to 1 gear ratio
stock mtx is 20/40 = 2 to 1 gear ratio
what i am suggesting is go to a 21/40 = 1.90 gear ratio or you can go with a 20/39 = 1.95 to 1 gear ratio to get your rpms back in line with where they should be. i suggest the 21/40 as you are not down by much.
i cannot tell you if the 21/40 will work with the stock 68l chain but the 20/39 will for sure.
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