CLUTCH OUT OF BALANCE???

powdersnobb · Mar 21, 2010

Anyone else notice that the primary clutch seems like it wobbles when it's running? Is this normal? I have a friend with an 08 mine is an 09 and they both seem to do it. Seems like it's either out of balance or just egg shaped. Runs fine though.

Skidoox600 · Mar 21, 2010

Mine is doing the same thing on my 09. It was running bad and it's getting a new crank right now under warranty. I guess a bearing went on it. I will let you know if it the crank is fixed see if it still wobbles.

REKXP · Mar 21, 2010

I think they all probably do that when they are stock. It was one of the first questions I asked. I came from a Polaris that looked perfect as it spun around. I asked the Ski-Doo tech about it and he said it was normal. I swear it looks and feels like it is out of balance but they claim it is fine. I would think all the vibration is going to carry through to the crank bearings causing problems eventually. I am going to take the primary to a machine shop this summer and have it balanced. I am sure it is within specs for Ski-Doo but I want this thing to last. Less vibration should make everything better including belt wear which is really good on mine.

Dootimes2 · Mar 21, 2010

Have the crank run out checked and make sure it is within specs.

Red-eye · Mar 21, 2010

If was out of balance that bad so you could see it, it would destroy itself. you are seeing it magnified through the motor mounts and the rubber dampener on the outside of the clutch.

Red-eye · Mar 21, 2010

Have you ever seen a small block chevy rock in its mounts when its all cammed up? doesn't mean it is out of balance.

REKXP · Mar 21, 2010

Ever see a small block Chevy all balanced and blueprinted? You can stand a nickel on edge on the intake and it won't tip.

Red-eye · Mar 21, 2010

Yes many times and I call bull!

dperkins44 · May 5, 2011

Clutch out of balance-very possible

powdersnobb said:
Anyone else notice that the primary clutch seems like it wobbles when it's running? Is this normal? I have a friend with an 08 mine is an 09 and they both seem to do it. Seems like it's either out of balance or just egg shaped. Runs fine though.

Check this out

http://youtu.be/Pc-Vp7c5g6A?hd=1

snow-doo · May 5, 2011

I have had alot of engine troubles with the 08 summmits.The last one made some noise in the pto end while riding.The clutch looked like it was an egg shape.Got it home and the crank seal let go.Checked crank runout .007 this crank is done.Nice part was i had rebuilt the clutch 42 miles before and the shake ruined the spring cover bushing again.What else can i say,no one forced me to buy 4 of them

mtnjunkie · May 7, 2011

Our sleds do it to some degree, even new. Looked at a friends xp and it doesn't, no wobble or shake when running, idle or even revved up a bit. Another friend's doesn't anymore after he got it balanced, on a rev. So I'd say it's not ok, though it seems to be "normal". I plan on getting mine balanced as soon as I can.

Red-eye · May 7, 2011

Balancing doesn't stop something from wobbleing. It stops it from shaking or vibrating. Trueing it up on a lathe would take out the wobble.

tbeaton · May 8, 2011

my 05 is still perfect. i ride with 3-6 11 etecs on a regular basis and every one of them wobbles at idle including mine. as soon as you give it any gas it goes away. i don't see how its a good thing that it does it though.

Red-eye · May 8, 2011

The whole engine is shaking at idle, then it smoothens out.

madmini660 · Aug 23, 2012

watch out for people like in the video above not everyone can do what they say and thats one of them had alot of problems after having him balance my motors had to get rebalanced after one blow up cost me alot of money and time just trying to help my fellow sledhead money and time they work hard for

ottawaair · Aug 23, 2012

right. check out ole Perks handi work here http://www.youtube.com/watch?v=QjWceKKUixQ

sledsrock · Aug 23, 2012

REKXP said:
Ever see a small block Chevy all balanced and blueprinted? You can stand a nickel on edge on the intake and it won't tip.

Yes, yes I have! In fact my SBC 406 full roller, 15.5:1 CR full balance alcohol motor idles smooth as silk....NOT!!!

snowguthrie · Aug 23, 2012

I had perks balance five clutches two years ago 2 on revs 3 xp's and they worked good. sleds ran smooth and almost nothing shook at 2000 rpm. had good luck with his clutch weight bushings in my polaris also.

madmini660 · Aug 23, 2012

snowguthrie said:
I had perks balance five clutches two years ago 2 on revs 3 xp's and they worked good. sleds ran smooth and almost nothing shook at 2000 rpm. had good luck with his clutch weight bushings in my polaris also.

well his full engine balance cost me a motor and a sled down for a season made the pull rope brake so bad it took crank seal out and lost one of my big bore's and there not cheap to rebuild so then I started asking around on here and everyone was having problems with his stuff my buddy had his 880 done as well and perks rotor broke and shot out of his sled by him well he was riding it, so I had to go get all my motors rebalanced and his stuff wasn't even close to being balanced on my three motors

byeatts · Aug 24, 2012

Perks clutch balancing is a good thing. Altering the crank dynamics with his engine balance kit is BAD and will destroy a motor

CLUTCH OUT OF BALANCE???

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