Wore out primary clutch after 300 miles???

[machinest660]

So last season I sent my clutch to carls cycle to have them balance and machine the the shives and do a full rebuild on my primary clutch, today I took it off my 800 to change it over for my 660 build and could not believe the amount of wear. The rollers are totally screwed and the weight bushing are toast as well, I never seen a clutch with so much wear in so few miles. Just curious to see what everyone else is getting for milage out of there clutch. Oh my set up was 62g belly busters and alp blue/pink spring. If anyone has any ideas on why this wore so fast please post them, Sled was also alway hauled in a enclosed trailer. thanks

 

[NapaMatt]

Maybe after 3000 miles.... ??

I don't see how the rollers could wear out in under 300 miles... less were riding in pure sand..

Primary Clutches are a wear Item.... Snowmobiling isn't a cheap hobby ..

 

[sled_guy]

I've seen it... with sleds that are trailered on open trailers without covers. Only takes one good dosing in road grime and then the wear accelerates.

Other than that, not ever seen it.

sled_guy

 

[jhurkot]

Aftermarket weights seem to be really hard on the rollers. I was told that when you rebuild a polaris clutch it won't last the same as a brand new one.

 

[kiliki]

cranks out of tolerance will eat clutches.

 

[sled_guy]

Not my experience if you use quality parts. There are rebuild kits out there for the Polaris clutches that use "import" parts. Haven't had good luck with rollers from those kits. But stock Polaris parts haven't been an issue.

sled_guy

Aftermarket weights seem to be really hard on the rollers. I was told that when you rebuild a polaris clutch it won't last the same as a brand new one.

 

[AdrenalineAddict]

I've found when rebuilding Pro clutches the spider bore for the pins is nearly oversize as in the pins simply fall out. If the bore is not pinged with a nail countersink or something the pins on the rebuild are loose and will eat rollers for lunch.
If some $10.00/Hr. mechanics helper assembled the spider that may be what you ended up with.

 

[geo]

I've found when rebuilding Pro clutches the spider bore for the pins is nearly oversize as in the pins simply fall out. If the bore is not pinged with a nail countersink or something the pins on the rebuild are loose and will eat rollers for lunch.
If some $10.00/Hr. mechanics helper assembled the spider that may be what you ended up with.

So are any of you suggesting that Carls's uses Chinese parts or 10 dollar helpers? I think that's where the OP said he had his done.

I have a reason to look here. I installed a machined-balanced primary from a known shop too.
It is not going to last near as long as my original. The way it is wearing makes me think the spider isn't centered.

 

[diamonddave]

Did you call Carls? How many miles did the clutch have before rebuild?

 

[machinest660]

I never called carls, the clutch had I think 1700 miles before the rebuild, it wasn't even that wore out but since I shipped it out I just had them do a full rebuild on it. I gonna rebuild it and see how long it lasts on the 660... hopefully a lot longer. Thanks for all the replies

 

[ak]

There's some slight differences between, the 600 and 800 clutch, the 600 clutch is lighter, Carl's told me they don't machine the clutch face on there 600 and 660 sleds, they feel the little motor needs the extra belt slip to get the motor to rev up faster.

Let us know how the 660 motor runs with different clutches.

 

[bryceraisanen]

It takes a good set of eyes, or a magnifying glass to see. Check if the washers used for setting sheave clearance r seated properly in the spider. Last clutch I did i was having a heck of a time getting the timing to line up. After several hours of frustration with washers/shims, I realized that they were not perfectly centering themselves, and had a tendency to get cockeyed with one side settled in the spider groove and the other side protruding slightly. Which would/could end up leaving ur spider mounted at a slight angle.

I had to hold them centered with my fingers while at the same time spinning the spider tight with my hands to keep them from slipping sideways.

I was pretty shocked that the washers wouldnt be tight enough I.D. to be self centering.

And this is after 10 years of monkeying with clutches lol. Learn something new everyday.

 

[machinest660]

There's some slight differences between, the 600 and 800 clutch, the 600 clutch is lighter, Carl's told me they don't machine the clutch face on there 600 and 660 sleds, they feel the little motor needs the extra belt slip to get the motor to rev up faster.

Let us know how the 660 motor runs with different clutches.

Ya the 800 clutch has a heavier face plate. The 600 clutch has the ring gear on if from the electric start that is no longer on the sled so the rotating mass shouldn't be much different... I will have to weight them to see the actual difference now. Carls never mentioned the machining on the 660 not being recommended but thats good info thanks. I just got the sled together the other day but there isn't even enough snow here to lube the slides and with the lack of snow out west i am not sure when i will get any riding in.