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Thread: New Track Trouble

  1. #1


    Default New Track Trouble

    I have an 02 Viper that I extended to 144 using tracks usa kit and viper mountain tunnel. I have a camso cobra track 1.352" lug(No Picks) installed that keeps loosening up. After the first couple adjustments i chalked it up to normal track stretching. I have 500 miles or so on the track and extension upgrade and have adjusted the track four maybe five times now. All the track drive and chaincase/jackshaft bearings are brand new. Each adjustment I've tensioned the track to about 1-1.5" sag at center with no weight and aligned.

    Couple other issues I've had with the new track setup: At slow speed I can feel what seems like the track rubbing on the tunnel somewhere judging by the vibration and noise it makes. This goes away upon accelerating & at speed.Note*(The exchanger and tunnel protectors have been removed for clearance) Also I burned through a new set of hyfax in under 400 miles, worn through to the rail in one small spot both sides just in front of forward most idle wheel.

  2. #2
    Senior Member Open Mod Vincent's Avatar
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    I have 6500 hard miles on my 136 x 1.35 Corbra, and holding up well.

    Track stretching alot for the first 1000+ miles is normal, readjusted mine many times like you. Are you currently out of adjustment?

    On the low speed vibrations, I've also noticed it to. You d swear the track is rubbing on something but it's not. Guess I just blocked it out of my thoughts after all this mileage

    Melting sliders is very odd, I easily get 3000 miles out of a set with this track. Just installed my 3rd set last fall, and I buy the cheap 50$ ones from Royal D
    Last edited by Vincent; 02-16-2020 at 12:16 AM.

  3. #3


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    The vibration/rubbing noise I hear appears to be coming from the back of the skid. The hyfax is a little longer than the rails and i can hear it rumble on the clips when i lift the sled and spin the track. Did a 150mi ride today, sled ran great except for one hiccup 10mi into the ride after a high speed run down a straight away. Upon decelerating it was as if the clutch shifted in low gear so to speak and there was engine breaking slowing me down so fast on coasting that the track nearly locked up. Once I came to a complete stop the sled would not move nearly burned a belt trying to get it to move. After yanking on the secondary clutching while another person lifted the rear i broke the track free and away I went trouble free for the remainder of the ride.

  4. #4
    Senior Member Open Mod A couple of bucks's Avatar
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    That last sentence about the secondary ..... I'm thinking of a bearing. Possibly w/ an AFU race and B.B.s. Mabey it was the yanking and rocking on the secondary that put them back in place. Speedo side??
    Have you opened up the chaincase since the track installation?
    Obviously I'm just chucking ideas out here.
    Dannyboy

  5. #5


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    Melted hyfax?
    -------------------------
    1997 Yamaha XTC
    700 Redhead, Mr. Viper ported, CPR pipes, SRX reeds, Heelclickers, Dual bulb, LT Ohlins

    1997 700 SX
    Thinned head gasket, Gutted Airbox, Reed Spacers, Bender Pipes, Viper Shocks, 51/43 helix 89L weights

    2004 Viper S
    SLP pipes, peak performance head,

    2001 SRX 700
    Power Inc. Pipes, Loaded 8DN20's, Hauck Y 51/45

    1997 Mountain Max 700
    Black XTC Hood, Thinned Head Gasket, Gutted Air Box, Reed Stopper Notch, SLP Pipes

  6. #6
    VIP Lifetime Member
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    Quote Originally Posted by MURDER YAMAHA View Post
    Melted hyfax?
    X2 - sure sounds like melted hyfax and would explain their premature wear.

    The next time you feel the hard engine braking, dive into some powder or up on a snow bank and see what happens.

  7. #7


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    Hyfax are worn out again in the same spot. That's the second set of hyfax in less than 700mi. This can't be right. Maybe it's just the geometry of this particular skid but all my other sleds will go easily thousand miles plus on a set of hyfax in the same conditions.

  8. #8
    Senior Member Open Mod A couple of bucks's Avatar
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    Both side are worn evenly?
    Dannyboy

  9. #9


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    Yes both sides are wearing evenly. The hot spot is at the front end of skid just in front of the most forward idle wheel where the rail begins to curve up. Maybe bigger idler wheels would take some weight off that part of the hyfax? I'm running the track about as loose as I dare to. By the end of the ride the track was ratcheting under full throttle take off, may have been caused by the extra slack from hyfax wear. There seems to be a fine line between too tight and so loose the track track ratchets with this sled.

  10. #10


    Default

    They make a marginal snow wheel kit. I am going to put one on my XTC for easier rolling resistance.
    Should take care or your problem as well.
    https://www.ebay.com/itm/Yamaha-snow...ox!58701!US!-1
    -------------------------
    1997 Yamaha XTC
    700 Redhead, Mr. Viper ported, CPR pipes, SRX reeds, Heelclickers, Dual bulb, LT Ohlins

    1997 700 SX
    Thinned head gasket, Gutted Airbox, Reed Spacers, Bender Pipes, Viper Shocks, 51/43 helix 89L weights

    2004 Viper S
    SLP pipes, peak performance head,

    2001 SRX 700
    Power Inc. Pipes, Loaded 8DN20's, Hauck Y 51/45

    1997 Mountain Max 700
    Black XTC Hood, Thinned Head Gasket, Gutted Air Box, Reed Stopper Notch, SLP Pipes

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