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25 Boost - Belt Slip Issues

I see the exact same thing on the clutches we get in to lighten and balance....pretty much all the P22 have belt marks, black slipping marks....Notice on 3rd picture the belt is not going to the top of the clutch, if you take apart the secondary it is the same from the bottom to the belt wear....lots of track speed loss...many aftermarket clutching make weights wit more TIP weight to make the clutch squeeze harder, the stock weight have very little tip weight because of the limited room with the roller bearing..Also the P22 weights are shorter than P85 weights, thus less tip weight. I do se some (not many) that are full shift, but most have black belt wear on the sheaves...when the belt slips it creates heat, thus it only get worst the hotter it gets...Maybe a gearing change could help?
If they didn't package for more tip weight it is a design of the clutch and not the bearing itself being present. They could move the cam arms out further when designing the clutch but chose not to. Moving them out would mean less weight overall needed, but then open up the design to allow for more tip weight.
 
I experienced the same thing on my 25 Boost last Sunday in similar snow conditions around Tabernash. It's simply the belt getting wet from snow coming through all the openings in the hood. I had taped the clutch side vents on my 22 boost and didn't have the same issue. Kesterke has a video that shows all the "free" mods he does to his new matryx sleds and he cuts black duct tape to size of vent and then tapes over it to close up the vents. Also removes foam from panels and uses silicone to help strengthen/bond the new two side panel piece design.

I taped up my vents Monday and do not thing I will experience issue again. Also plan on installing BBA clutch kit
 
I experienced the same thing on my 25 Boost last Sunday in similar snow conditions around Tabernash. It's simply the belt getting wet from snow coming through all the openings in the hood. I had taped the clutch side vents on my 22 boost and didn't have the same issue. Kesterke has a video that shows all the "free" mods he does to his new matryx sleds and he cuts black duct tape to size of vent and then tapes over it to close up the vents. Also removes foam from panels and uses silicone to help strengthen/bond the new two side panel piece design.

I taped up my vents Monday and do not thing I will experience issue again. Also plan on installing BBA clutch kit
One thing I noticed on the 25 is that Polaris "filled" in the rearward most small vent that was directly over the clutch cover on the new side panels but left the other opening on the top of the side panel open... so clearly they know it is an issue. I taped up the top vent on side panel and both clutch side vents on the hood.
 
Dealer offered to pull the clutches off and look at for free. No issues.

what is baffling to me is how two dealers, including one right next to the riding area, are seemingly unaware of this major issue that polaris’s own ambassadors promote fixes for. could have saved me some frustration with just a bit of the knowledge gained here
 
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Dealer offered to pull the clutches off and look at for free. No issues.

what is baffling to me is how two dealers, including one right next to the riding area, are seemingly unaware of this major issue that polaris’s own ambassadors promote fixes for. could have saved me some frustration with just a bit of the knowledge gained here
Dealers never pay attention to anything but polaris factory information releases.

It's kind of silly.

Myself and my brother talk to the service manager and educate him usually. (He's legit)

But that's just our dealer.
 
If they didn't package for more tip weight it is a design of the clutch and not the bearing itself being present. They could move the cam arms out further when designing the clutch but chose not to. Moving them out would mean less weight overall needed, but then open up the design to allow for more tip weight.
that would help the issue for sure...the weight for the P22 is shorter, little less than a 1/8, than a P85 weight as well...there is room to move the pin location out on the P22...Yes that would help!!
 
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You would be surprized at how many dealers or their mechanics dont ride or get much seat time, fortunately my dealer is rider when he can and used to race/hillclimb so he has an idea about what he sells. The local Doo dealer has never been a rider nor his mechanics so they dont have a clue, he got the doo dealership for their reputation across all the outdoor segments
 
You would be surprized at how many dealers or their mechanics dont ride or get much seat time, fortunately my dealer is rider when he can and used to race/hillclimb so he has an idea about what he sells. The local Doo dealer has never been a rider nor his mechanics so they dont have a clue, he got the doo dealership for their reputation across all the outdoor segments
+1. If your dealer (and I mean the owner, and the employees) ride, they get it. You want to do business with people who take snowmobiling seriously (like we do).
 
I experienced the same thing on my 25 Boost last Sunday in similar snow conditions around Tabernash. It's simply the belt getting wet from snow coming through all the openings in the hood. I had taped the clutch side vents on my 22 boost and didn't have the same issue. Kesterke has a video that shows all the "free" mods he does to his new matryx sleds and he cuts black duct tape to size of vent and then tapes over it to close up the vents. Also removes foam from panels and uses silicone to help strengthen/bond the new two side panel piece design.

I taped up my vents Monday and do not thing I will experience issue again. Also plan on installing BBA clutch kit
I googled and looked for Caleb's video, but it came up empty. Must not be on YouTube. Instagram?
 
I googled and looked for Caleb's video, but it came up empty. Must not be on YouTube. Instagram?
It was on his Youtube page last season and I watched it a few times but I can't find it anywhere and see other comments on his page asking where his "cheap upgrades" video went. Bet Polaris asked him to take it down. He went through all the free/cheap things he does to his new matryx sleds upon arrival. Pulls all foam, uses duct tape to cover hood vents (black duct tape right side up for clean look then tape over from back), he used silicone to strengthen the new two piece side panels, and drilled a bunch of 1/2" holes in the bottom of the hood storage so it stays nice and hot and can defrost gloves/goggles. Think that was all of them
 
Just for fun, put a p-85 (or even a different p-22) on it and see if the problem persists. Maybe it’s something binding in the clutch when it gets hot and nothing to do with the moisture.
 
I’ve the same issue on my 9R when riding super deep snow all day. Mine slipping is not as bad as you describe, I’ve done some under hood snow removal and wiped the primary dry as best I could to stop the belt slip.
 
Looking at your pics. It sure looks like water and snow issues on your belt and clutches. Your bulk head behind the secondary is wet.
You may be sucking it in your footwell also.
I have the same problem , too much dry snow , dealer says normal to fly over the hood when clutch smokes belt. haha,
I think sealing it up with frogskins will help?
looking for the thread from 2022....
 
Frogzskin fixed it fully. I bought the matryx hood kit and a spare piece. Sealed the 4 top vents, the side panel vent on clutch side, and the two snout vents. left the metal grill ones open. no more issue
 
Frogzskin fixed it fully. I bought the matryx hood kit and a spare piece. Sealed the 4 top vents, the side panel vent on clutch side, and the two snout vents. left the metal grill ones open. no more issue
Link to the kit? I might give it a try.

I have a few boosts and 9Rs and never had that problem. I literally live on rabbit ears (can see them from my deck) and ride almost every day and never had that issue. But perhaps I have not been paying close enough attention if it’s mild.
 
Link to the kit? I might give it a try.

I have a few boosts and 9Rs and never had that problem. I literally live on rabbit ears (can see them from my deck) and ride almost every day and never had that issue. But perhaps I have not been paying close enough attention if it’s mild.
It seems the issue is when its very cold and powder is dry flour. somewhat rare specific snow conditions. makes it unridable. hard on the body going over the hood. Thanks for the info Frogskinz matrix kits,

https://frogzskin.com/collections/matryx
this will do the hood
Get some universal sizes for the side covers
 
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