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Who has changed their helix in 850? Thoughts?

A

ak

Well-known member
Dec 7, 2007
2,776
723
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I ran a rb2 (I think, maybe it’s r2b) helix from roosterbuilt. Ran it with a black secondary spring, softer start/stock finish primary and added a ton of weight to the stock weights. This was on a165x3 The dealer I bought it from geared it up one tooth on the top(crazy, I know)
I loved it. Pulled dam hard. A friend of mine had the same sled, same gearing but with stock clutching. On a 300-400’ pull up a Hill in 3’ of powder I’d pull 30-40’ in front of him.

Geared it up from the 2017 gearing are 2018 stock gearing?
 
I
Dec 21, 2016
253
173
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I would like to see some feedback between clutching setups that use pivot weights alone vs a combination of pivot & tip weight. Other than that variable; main differences between kits is more or less springs & helix, right?
 

BIG JOHN

Well-known member
Premium Member
Nov 26, 2007
1,953
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Minnesoooota
we have 3 season on the Pdrive...

our kit reflects what we found works best...

ALL aspects have been tried-BJ
 
J

JJ_0909

ACCOUNT CLOSED
Nov 16, 2009
1,023
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we have 3 season on the Pdrive...

our kit reflects what we found works best...

ALL aspects have been tried-BJ

Curious, do you dyno your stuff Big John? Any data you can share? Thanks man!
 

rab

Active member
Lifetime Membership
Dec 15, 2007
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48
how tall did you go ?

What track are you running ?
 

BIG JOHN

Well-known member
Premium Member
Nov 26, 2007
1,953
1,146
113
Minnesoooota
Curious, do you dyno your stuff Big John? Any data you can share? Thanks man!

track dyno is only for "upshift" calibrations...

IMHO not very useful for a mountain sled (back shift)...

25+ years of experience (original Polaris guy so I understand the flyweight clutch), field testing and comparing vs stock is a lot more reliable...BJ
 
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