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Belt throwing cords at 100 miles???

2012 PRO RMK 163

What the hell? Looked today after the first "real" hard tree pulls (5 min) and my belt is puking cords in 2 spots. Not what I expected with a brand new sled? I took my time and baby'd it during break in and still haven't got to ride it hard due to lack of snow.

Replacing these 115 belts for $180 after each 100 miles is NOT going to work....ideas???
 
Did you let the sled warm up? Without warming up the sled the belt dont get warm.... Did you take it easy the first few miles... if you go balls out right away and run it hard you will not properly break in the belt and yes it will go bad right away... i have learned my lesson by not breaking in my belt properly... I now WASH my belt with HOT soppy water and rinse and dry over night... then when i break in a new belt i take it easy for the first 10 miles and then start to run er harder... Yes they are expensive and shouldnt happem at that many miles... If thats not the case then check the belt tension... and see if its too tight or too loose.... if your dealer is a good one take it back and tell them how many miles are on it and they should be able to get some warrenty on a new belt.. thats what happened to me!
 
Have you checked or adjusted your belt tension for spec? You can expect to have it stretch and be out of range during that range of miles.
 
belt throwing cords at 100 miles

Check that your clutches are in alinement.
 
Check belt side clearance, too. Many poos have too much side clearance, doing nothing good if you're slamming the sliding half into the belt. If the cords are always on the sliding half side, it's a possible culprit. TRA's are famous for this, also. Inherent in the design of the TRA, but P85's are not immune.
 
Did you let the sled warm up? Without warming up the sled the belt dont get warm.... Did you take it easy the first few miles... if you go balls out right away and run it hard you will not properly break in the belt and yes it will go bad right away... i have learned my lesson by not breaking in my belt properly... I now WASH my belt with HOT soppy water and rinse and dry over night... then when i break in a new belt i take it easy for the first 10 miles and then start to run er harder... Yes they are expensive and shouldnt happem at that many miles... If thats not the case then check the belt tension... and see if its too tight or too loose.... if your dealer is a good one take it back and tell them how many miles are on it and they should be able to get some warrenty on a new belt.. thats what happened to me!

Hogwash! You should let the motor warm up so you dont cold seize but warming a belt, scrubbing it, breaking it in is a bunch of garbage. Either you clutches are right or they are wring. Ive got 715 HARD miles on my 12' and changed the belt out on the mountain a ride the piss out of it and all is well.
 
Hogwash! You should let the motor warm up so you dont cold seize but warming a belt, scrubbing it, breaking it in is a bunch of garbage. Either you clutches are right or they are wring. Ive got 715 HARD miles on my 12' and changed the belt out on the mountain a ride the piss out of it and all is well.

Sorry, but I have to disagree. Belts all either have cutting agent, or releasing agent on the sides when they come new. THey should be washed to remove this before riding, or the substance will glaze your clutches. Breaking in a belt is also important. If you go balls out, on a cold, new belt, it will never last as long as one that is broken in correctly. Its as simple as trail riding the belt for a while (10-15 miles) when it is new, before putting under high load, high heat/stress conditions. As far as warming the belt up every ride, just riding it out of the parking lot to your riding spot, should do.
 
Sorry, but I have to disagree. Belts all either have cutting agent, or releasing agent on the sides when they come new. THey should be washed to remove this before riding, or the substance will glaze your clutches. Breaking in a belt is also important. If you go balls out, on a cold, new belt, it will never last as long as one that is broken in correctly. Its as simple as trail riding the belt for a while (10-15 miles) when it is new, before putting under high load, high heat/stress conditions. As far as warming the belt up every ride, just riding it out of the parking lot to your riding spot, should do.

Disagree all you want, I have been riding steep heavy snow that is about as hard on belts as can be and I have never worried about breaking them in propper. A little cutting agent isnt going to cause cords to pull in the first 100 miles
 
Sorry, but I have to disagree. Belts all either have cutting agent, or releasing agent on the sides when they come new. THey should be washed to remove this before riding, or the substance will glaze your clutches. Breaking in a belt is also important. If you go balls out, on a cold, new belt, it will never last as long as one that is broken in correctly. Its as simple as trail riding the belt for a while (10-15 miles) when it is new, before putting under high load, high heat/stress conditions. As far as warming the belt up every ride, just riding it out of the parking lot to your riding spot, should do.

completely agree, and so does one stop performance. The releasing agent causes a lot of belt issues. I always wash brand new belts, then use a scuff pad, then wash, then use acetone on a cloth to clean sides of the belt....I have never had a belt issue with any sled using this process. I always take it easy for the first 5-10 miles in, and then you can WOT all day long, and have no issue. Belt break in and prep is directly correlated to belt life.
 
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This belt was broken in correctly. I have always washed my belts before and have had 3 sleds that run this belt. Never got less than 500 out of them before. Something is up. Going to see what the dealer says.

you could have gotten a bad belt!?!? I would pull the cord out and cut it, and then take a lighter to the threads, and retry it. I had same thing happen on a 08 summit 800R and I did the same thing and it was great for another 600 miles after that.
 
I would ask the dealer to look over both clutches, check alignment and belt deflection as well as belt to sheive clearence..pretty odd for a pro to eat a belt that quick for sure...let us know what they find...
 
completely agree, and so does one stop performance. The releasing agent causes a lot of belt issues. I always wash brand new belts, then use a scuff pad, then wash, then use acetone on a cloth to clean sides of the belt....I have never had a belt issue with any sled using this process. I always take it easy for the first 5-10 miles in, and then you can WOT all day long, and have no issue. Belt break in and prep is directly correlated to belt life.


Ha ha.....I hear Michigan riding is REALLY tough on belts where as Mt Baker only gets about 1000" a year and all riding is off trail in heavy vertical snow and 3 minute wot pulls! Guess I got lucky all these years:face-icon-small-con

I would suspect that Outlaw525 riding an assault is a trail rider as well. Its like apples and oranges boys. Gee mister, I got like 2000 miles out of my last belt cause we ride 100 miles of flat trail every day.

Has the snow in CO been heavier than normal? That will cause a lot more belt heat than your normal snow and could cause a cord to go.

Rt
 
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Ha ha.....I hear Michigan riding is REALLY tough on belts where as Mt Baker only gets about 1000" a year and all riding is off trail in heavy vertical snow and 3 minute wot pulls! Guess I got lucky all these years:face-icon-small-con

I would suspect that Outlaw525 riding an assault is a trail rider as well. Its like apples and oranges boys. Gee mister, I got like 2000 miles out of my last belt cause we ride 100 miles of flat trail every day.

Has the snow in CO been heavier than normal? That will cause a lot more belt heat than your normal snow and could cause a cord to go.

Rt


Hey Chief I ride mostly in West Yellow stone, Snowies, Cooke, and Big horns....I rode more out west then I did in Michigan last season, and probably this season. FWIW Western MI UP on average gets 300+ inchs of snow, so about half of what Baker averages.
 
I saw 900 miles on my 115 belt last year before it blew, 225 miles on the Turbo. I'm running the 048 Cat belt this year, for $85 it's worth a try.
 
I saw 900 miles on my 115 belt last year before it blew, 225 miles on the Turbo. I'm running the 048 Cat belt this year, for $85 it's worth a try.

Thanks for the reminder! I had forgot about that belt. I put one on an iqr that I finished building for a buddy 2 years ago and he is still running on that same cat belt. Hmmm, May have to try one on my Pro as well. $198 for a 1115 here +6% tax... Ouch
 
People keep referring to releasing agent. I was under the impression that once the belt came out of the mold it was precision ground to the right spec's.... effectively removing all release compound. I think it has more to do with water being kicked into the belts. I pulled a cord in 75 miles. I have another 75 with the vents installed and no more problems...... Coincidence?
 
People keep referring to releasing agent. I was under the impression that once the belt came out of the mold it was precision ground to the right spec's.... effectively removing all release compound. I think it has more to do with water being kicked into the belts. I pulled a cord in 75 miles. I have another 75 with the vents installed and no more problems...... Coincidence?

I have been told that there is a mold inhibiter on new belts that needs to be washed off.
 
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