A little something to get the blood Pumpin'

[Timbre]

Polaris Snow MY22 with Chris Burandt​

 

[Timbre]

GAME OVER!

 

[madmax]

Cant wait for mine!!!

 

[damx]

I'm excited for mine also, wounding what helix and spring combo polaris settled on.

 

[High Voltage]

You got to be good to wear those colors! Lol

 

[zaasman]

I'm excited for mine also, wounding what helix and spring combo polaris settled on.

Polaris recently published owner's manuals for the Matryx RMKs, which includes these clutch specs for the 850s:

	Weight	Drive Spring	Driven Spring	Helix
N/A Low Elev.	10-72	150-290 (Almd/Gld)	140-200 (Red/Blue)	60/44/.36
N/A	10-68	120-320 (Black)	155-222 (Black)	STR 42
Boost	14-78	165-310 (Almd/Red)	160-240 (Blk/Prpl)	64/44/.40

 

[damx]

Awesome thanks, hope this is not the clutching that was leaving black streaks on the boost demo sleds.

 

[Wheel House Motorsports]

Thats what was in the test sled i rode, peaked behind the clutch and they had spring written on sheaves. Its basically Carls helix and spring they've run for the last 15 years it seems.

Hoping we can build some spacer adapters and get some @TRS weights in there and run his combo. WHile the boosts I rode ran damn good, I've also rode almost that exact clutching combo on turbos in the past and know tonys outruns it and makes less heat.

 

[TRS]

Thanks Nick.
We may start with spacers until the proper weights are built. They have been on the burner since March.
The boost weight has a large pin boss that is also wider. A new dimensional primary spring may be in order as well.

 

[Timbre]

 

[mountainhorse]

Hoping the Global Chip shortage doesn't have an impact on this years offerings....


.

 

[Timbre]

That's for SURE!!

 

[Timbre]

Boondockers 2021​

 

[TRS]

Our TRS weight will not fit in the P22. There is not enough room for the tip or the tuck. Polaris added a reinforcement rib along with a larger center hub to accommodate the bearing.
I have a P22 that I have been working with. The 10 series style weight has been back cut at the tip to allow it to rest in the P22.
The comparison is the new weight along with a 10 series behind.

 

[Ultrasauras]

What holds the spider on the new clutch, snap ring?

 

[Sheetmetalfab]

Our TRS weight will not fit in the P22. There is not enough room for the tip or the tuck. Polaris added a reinforcement rib along with a larger center hub to accommodate the bearing.
I have a P22 that I have been working with. The 10 series style weight has been back cut at the tip to allow it to rest in the P22.
The comparison is the new weight along with a 10 series behind.

What’s your overall impression of the clutch?

Will there be any increased longevity?

 

[volcano buster]

Is this clutch transferrable to earlier 850's?

 

[TRS]

What holds the spider on the new clutch, snap ring?

In reality the clutch bolt and the primary spring. There is a Clutch bolt tower that is removable. It incorporates a shim/spacer that holds the spider in place. The one I have has a measurable gap, this leads me to believe the spider will migrate. That in turn would allow a belt to sheave gap to fluctuate. I’m going to see if that can be rectified.
The spider and stationary are splined. It takes very little heat to remove the spider.

 

[TRS]

Is this clutch transferrable to earlier 850's?

Yes, but we will have to see when a Polaris NA weight is available or an aftermarket.
I would run a P85.

 

[TRS]

Here is the breakdown