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gear ratios

Snowmobile How-To's

 
 
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  #1  
Old 03-05-2010
crzyh2o
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Default gear ratios

I have a 1996 Cougar 550 L/C and am running the stock 20:39 gear ratio. I was wondering if anybody could suggest different gear set ups to give me more bottom end tourque. I beleive that i am running the stock clutching. I am a heavier rider. Top speed is not as important as holeshot off the line. Any advice would be great.
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  #2  
Old 03-05-2010
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23:40
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  #3  
Old 03-05-2010
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That would give him more top end.
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  #4  
Old 03-05-2010
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Drop to a 19t top gear or raise the bottom gear to a 41t or 42t
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  #5  
Old 03-05-2010
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I'm not sure the differences with Polaris and Cat. But I believe your current gearing is sufficient for down low. You are actually geared the same as me 1.95 ratio is kick ass for takeoffs, but I don't see triple digits with that ratio either. Try gearing any lower and you may run into traction issues.

I've found, and this is only my personal findings. Anything geared 2.0 and above you'd need a longer track to hook up on takeoff.
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  #6  
Old 03-05-2010
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Depends on his engagement rpm.
@ 3200/3400 with shift out peak at 8200/8400, it'll be a top speed of 92mph.

It's what I have in the Wildcat now with a red spring and 4 56 gram weights. and the yellow in the secondary.
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  #7  
Old 03-08-2010
crzyh2o
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My engagement is about 3800rpm. should I drop it down to the 3200 rpm range. if so how would i go about doing that?
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Old 03-08-2010
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You would use a heavier weight.
A-15 (50 grams) with yellow/green spring.
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Old 03-08-2010
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Why would you want to drop engagement if you want a better hole shot? You should raise it if anything.
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  #10  
Old 03-08-2010
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Suspension set up along with a lower engagement rpm and the higher gearing ratio will provide the low end pull you are looking for along with very quick acceleration through the mid range.
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  #11  
Old 03-09-2010
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Quote:
Originally Posted by OCR View Post
Suspension set up along with a lower engagement rpm and the higher gearing ratio will provide the low end pull you are looking for along with very quick acceleration through the mid range.
Raising engagement gets you into the powerband quicker and a lower gear ratio gives you more torque = better holeshot. You're setup seems like it's more for midrange?
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  #12  
Old 03-09-2010
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Low and mid range.
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  #13  
Old 03-09-2010
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But more or less mid range
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  #14  
Old 03-09-2010
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Strongest in the mid for sure, which is nice for getting on top of deep snow.
At 30mph, jut nail it and it's "yank your arms off" acceleration.
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