Hum from track or???

[C of Red]

Late last year I tagged a rock. It hit fairly hard on the front of the track. Shortly after my sled had a significant hum. The hum produces a major vibration that can be easily felt through my feet. It is very noticeable. Initially I thought I bent a rail. I crawled under that day and again today and everything looks in line. What else could it be?

Track is a little loose but certainly not bad.

Any suggestions would be greatly appreciated.

Curtis

 

[maxwell]

Is the driveshaft bent?

 

[C of Red]

It didn't look like it but it's hard to tell. The drivers are lining up good with the track windows but I supose that doesn't really mean anything. I suppose it wouldn't take much of a bend. I will try to get in there better tomorrow for a second look. I hope not because that sounds expensive. Lol

 

[Clode]

I would pull the skid and look at it, I have seen bent rails before that were hard to see when the skid is in the sled

 

[Absledder]

I would pull the skid and look at it, I have seen bent rails before that were hard to see when the skid is in the sled

I second this. Its alot easier to get a good lookat everything when its not covered by track and tunnel. I had a slight bend in the lower arm my limiter strap connects to which puled my rails together slightly which caused just about the same issues. Is there any damage to your track that could be causing it to rub the tunnel?

 

[maierch]

I would think a vibration would be something rotating. When you have the skid out checking the rails have a good look at the driveshaft. It wouldn't take much for it to vibrate.

 

[drew562]

My xm vibrates on certain days with ice in the tunnel and build up. I wonder if you had that happen and because of your heightened Awareness from hitting a rock you really noticed the vibration. There were days I thought something was seriously wrong with my sled due to vibrations from ice on the insides of my tunnel. Just a thought

 

[tex78]

My xm vibrates on certain days with ice in the tunnel and build up. I wonder if you had that happen and because of your heightened Awareness from hitting a rock you really noticed the vibration. There were days I thought something was seriously wrong with my sled due to vibrations from ice on the insides of my tunnel. Just a thought

Yes mine too

Get into good snow and no vibration

 

[neilsleder]

If you got aftermarket aluminum wheels they will vibrate like crazy. Or you could of broke a fibreglass rod in your track that might cause it. I would think a bent drive shaft you would feel it more then hear it.


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[C of Red]

Thanks for all the feedback. It physically vibrates enough that it almost put my feet to sleep. Something is definitely wrong. A closer look today has some wear on the drivers (both). But the sled has over 2000 miles so I would expect wear, shouldn't I?

I have the vibration on the trail and in the deep snow.

 

[Shadam]

I dont know much bout xm's ...

clips on tracks somehow get badly bent and chew out drivers and hyfax ... rock strike we always think but no one remembers a big rock hit.

if you were talking older (like my rt1000) a sled a hit on the chain case housing has ruined peoples day and a light hit can cause chain to rub on housing.

look for wear on hyfax and drivers related to clips me thinks ...

is track rubbing on tunnel. should be easy to see.

its hard to see in under tunnel up front but drop the track and let us know ...

 

[Caper11]

Check your rails like mentioned above. Pull it out to inspect it.

Also a perfect time to check wheel brgs and bushings.


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[Russell P]

Shot in the dark, have a quick look at your brakes, loose/ bent rotor or shoe issue.

 

[C of Red]

I couldn't find anything bent or out of alignment. Rails looked fine as did the driveshaft. Took it to the local Doo dealer and they tell my the vibration was coming from the clutch. Not sure how that would happen. Said they adjusted something and there will be less vibration now. Also said the clutches should be completely serviced but that they would be fine for the year.

Not sure what to think of that diagnosis.

 

[maxwell]

Lol no adjusting will reduce vibration but if one of the bushings was shot them maybe