Clutch weight advice... ?

[lasse]

HELP !!

I need some explanation and advice regarding choose the right clutch weight curvature.
Polaris is offering the Series 10 and Series 11 clutch weight.

What are the advantages of each series ?
What are the disadvantages of each series ?


Quote:
The Series 11 flyweights feature an aggressive shift curvature, and thinner profile,
compared to the Series 10 weights.

When compared to a Series 10 weight, the Series 11 weight has more weight distributed at the beginning of the profile curve
and does not tuck under as much as the Series 10 weight.
Because of this difference, the belt-to-sheave clearance must be checked and washers may need to be added to increase the belt-to-sheave clearance after installing any Series 11 weight into a drive clutch that was previously equipped with Series 10 weights.

The procedure for increasing the belt-to-sheave clearance by changing shim washer(s) between the spider and fixed sheave
is outlined in all Polaris snowmobile service manuals.

When cross-referencing between Series 10 and Series 11 flyweights,
a Series 11 flyweight will function similarly like a 2-gram heavier Series 10 weight.
For example, use a 11-68 when replacing a 10-70 flyweight.



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[Snowbird11]

I can't answer your question but can say i'm interested as well. Tri-city polaris has some new weights similar to the 11 series that have been working well for lowering belt and sheave temps for folks in my neck of the woods.

 

[Mentzel]

no real advantage 10 vs 11

The 11 will up shift faster and reduce your top end RPM assuming all other clutch components are the same.

If you are over revving on hard acceleration or when holding WOT the 11 may work better. If you are "lugging" on the bottom end during acceleration and not hitting your target RPM you might go with the 10 series.

99% of the time a 10 series weight combined with the right spring and secondary components works fine.

So many companies selling "stuff you need" now...

 

[lasse]

HELP !!

I need some explanation and advice regarding choose the right clutch weight curvature.
Polaris is offering the Series 10 and Series 11 clutch weights.
What are the advantages of each series ?
What are the disadvantages of each series ?

 

[simnil]

There are no absolutes but roughly simplified.

Flyweights that are heel heavy, a lot of the weight is close to the pin, will push hard from the bottom
Flyweights that have more of the weight concentrated towards the tip will let the engine gain more revs before starting to load it.

11 Series works fine on engines with lots of bottom end and midrange power, i.e big cc engines. They shift harder from the start and will make cruising revs lower.
10 series weights will let the engine gain more revs before staring to load it. i.e smaller cc engines. (yes I know most bigger engine sleds come standard w 10-series weights)

 

[AdrenalineAddict]

I've found the 10 series weights are a near perfect match for the power delivery of the Pro motor with the stock helix. Polaris did a great job with their clutching recommendations on the Pro 800. A lot of folks will claim they have improved on it, but after 4 years and 6,000 miles of testing, tuning and climbing I have yet to see any other setup outrun a properly weighted/sprung stocker.