Nephew is installing a 166x2.4" Polaris track, on his 01 skidoo 800. sled has a 43x20 gear, (2.15 ratio). I was thinking 2.45 would be a good ratio to get to with the big track. My question is, what does going to 8t drivers from 9t do to the ratio? What do I need to do to get to that 2.45 mark?? and is that a good ratio to run with such a big track?
From a 144" to a 166", What should I regear it to?
- Thread starter mx100
- Start date
T
tukernater
Well-known member
If it was me i would go 19-47 or atleast 19-45 min
On 8 tooth drivers, 19/47 would put you at 2.78, which would probably work really well for that big of a track. 19/45 would put you at 2.66, which isn't bad either.
What is the formula to use when calculating in the size of the drivers? I know with just the gears, you divide the big by the small, but how do the drivers get calculated into the equation? Thanks.
Jim, if your sticking with the same pitch then you can just divide new/old... so if your going 8 from 9 you get .88 gear reduction there, or 12%.
i ran 19/47 on my 151.. loved it, doesnt need to go 90mph and it makes the bottom end a LOT more playful.
something to play with http://www.turboaddictionparts.com/catalog/snowmobilecalculator.html
i ran 19/47 on my 151.. loved it, doesnt need to go 90mph and it makes the bottom end a LOT more playful.
something to play with http://www.turboaddictionparts.com/catalog/snowmobilecalculator.html
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