Mcx 310 nytro driveline noise

[800tundra]

Had my Nytro up in the hills this weekend and noticed a thumping noise that increased as the track speed increased. Sounded as if something hitting as came around. I am sure it wasn't ratcheting as I would ease into it and it would still do it as speed increased.
Checked track tension. Its tight.
Tried cleaning snow off of wheels no help.
Checked all wheels in skid for bad bearings
Driveshaft seems like no play in bearings
Checked chain tension

Things I noticed.
Thought driver may have been off a bit but moved it over and did not help.
Driver on right side has some black marks on it
Have anti-stab wheels on but did notice they don't stick past the rail tips bout 3/16" shy
Missing a couple track clips.
Top of rear shock very close to track sometimes rubs.

Could the missing track clips be causing one driver to pull track more than other side and hitting front of sliders. Again . Track is very tight.
Any thoughts/suggestions would be greatly appreciated.

 

[Sleds R Fun]

The rear shock cross shaft ,lower, make sure your sliders aren't worn as the rubber nubs will rub that cross shaft/lower shock attachment point.

 

[08nytromtxa]

jackshaft bearing

Just a thought maybe try shaking your secondary clutch to see if the bearing is gone on jackshaft I know that will give vibration

 

[800tundra]

Will check secondary.has Brand new sliders checked that as I thought at first i didnt trim ends off enough. thanx

 

[kinger9]

How is the belt? I had the exact same thing happen to me about 50 miles later the belt flew apart (had 3800 miles on it all boosted). Just something easy to check.

 

[M C]

Here is a pic of my Wahl Bros kit, it looks like your hitting your rail tips

 

[800tundra]

How is the belt? I had the exact same thing happen to me about 50 miles later the belt flew apart (had 3800 miles on it all boosted). Just something easy to check.

I did think same and changed belt which had a cord pulling out but didnt help. Thanks tho.

 

[800tundra]

Here is a pic of my Wahl Bros kit, it looks like your hitting your rail tips

Thanks for pic. Thats what I was thinking anti-stab should look. As mine was already installed when I bought sled .Will check this out closer now.