The Brake stop ride, What is the real issue

[mt.sledder]

Does anyone know the real reason for the brake stop ride? Is it one of the following or is it something else?
- snow/ice buildup behind lever causing the brakes to drag?
- clearances on affected brake levers to tight causing brakes to drag?
- caliber issues not fully releasing the brakes?
- master cylinder clearance issues not allowing full release of brake line pressure?
- Incorrect brake fluid levels causing the brakes to drag?
- park brakes being left on (I have a hard time believing this can happen since it’s very difficult to apply the brakes hard enough to latch the park brake)
- customers installing aftermarket brake levers that cause the brakes to drag then installing the stock ones back on for warranty?
- riding styles with a finger on the brake applying slight pressure causing the brakes to drag?

Someone must have gotten an explanation.

 

[diamonddave]

Polaris is consulting with our leading forum experts. I’m sure one of them will chime in shortly as to the root cause and corrective action.

 

[Pinchecharlie]

On another thread a builder said the mc plunger was long and in concert with the lever engaged the mc? They are clearancing the lever as a solution until Polaris has a solution?

 

[MDEVO]

Last season We noticed All of our Matryx rmk’s had very limited brake lever travel.
Makes for a lack of feel and obviously brake heat and wear. As identified in other discussions if you “ride” the brake, it will promote excess heat so likely the primary cause for the issues.
Some guys removed volume from master cylinder, others changed out or machined down the stock lever.
I would suspect this Should be a fairly easy solution to this stop ride…..????

 

[turboless terry]

I thought the brake was awesome

 

[mtncat1]

I thought the brake was awesome

probably just a little to aggressive ,i think this will be a quick fix

 

[JH@CM]

The all new matryx lever! Game changer!

Minor issue IMO. Won't stop me from riding the 22 while I wait for the 23 to show.

 

[RX1Guy]

Buddy of mine (not sure if hes on here) said on social media he was riding before he got the recall and his quick drive belt melted. ouch

 

[208_RMK]

I’m curious to see what comes of this. I heard RMSHA racers go through brakes like crazy, and have been for some time - probably due to finger on the brake riding style and riding the brake? They also get like 5-10min run time on a sled per event, dosent seem like a lot especially compared to an afternoon of tree riding.

 

[Fredrik]

On my khaos 146 its a gap in tunnel behind brake disc.

 

[Lobster Carl]

On my khaos 146 its a gap in tunnel behind brake disc.

My 146 is worse than that. Going to need plenty of ice and water shield and 5200 to seal this one up.

 

[mt.sledder]

I’m curious to see what comes of this. I heard RMSHA racers go through brakes like crazy, and have been for some time - probably due to finger on the brake riding style and riding the brake? They also get like 5-10min run time on a sled per event, dosent seem like a lot especially compared to an afternoon of tree riding.

Those RMSHA riders aren't just racing up the hill with a finger on the brake. They are riding the brake hard while still being into the throttle when working their way up the course. Fractions of a second are a big deal to them and burning brakes to keep rpms up and being fast out of the turns are the cost of winning.

 

[carbontj]

if they are tight just pull the pads out and grind them down for brake disk clearance. only a tension pin to remove them...

 

[bobback]

if they are tight just pull the pads out and grind them down for brake disk clearance. only a tension pin to remove them...

Because most of us normal people can do that. ?

 

[Toy4rnr]

Take this with some salt, I am going to take my slash over to my friends place and get some comparisons done as her sled is barely out of break in and the brake is dragging apparently. Disc I guess was very hot and it was just from riding around their 1 acre field a bit not using the brakes. Fluid level seemed fine from what I was told, but cannot confirm. I have 550 miles on mine and haven't noticed anything wrong, but then again I never bothered to look at the brakes after riding until now. I haven't rode it at all yet this year so I don't know if mine is affected too.

 

[SidewaysInto3rd]

if they are tight just pull the pads out and grind them down for brake disk clearance. only a tension pin to remove them...

That would be completely pointless as the caliper will adjust next time you use the brakes, if that were not the case your brake lever would get more and more play the more you wear out your pads ..

 

[Toy4rnr]

Well my pads are super tight also, not sure if it's normal to have less than 0.03mm of clearance between the pad and rotor but my smallest feeler gauge wouldn't fit..

 

[mtncat1]

if they are tight just pull the pads out and grind them down for brake disk clearance. only a tension pin to remove them...

you can't do that the caliper will just take up what you grind off ,you just need to clearance the lever

 

[mtncat1]

Well my pads are super tight also, not sure if it's normal to have less than 0.03mm of clearance between the pad and rotor but my smallest feeler gauge wouldn't fit..

pads have zero clearance when you release a disc brake you just have a lack of pressure

 

[SLDHVN]

2022 Khaos 850 155

lever definitely had pressure on the plunger, fixed that

also went through 2 melted speed sensors last year.....