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post #1 of 19 (permalink) Old 06-19-2019, 12:31 AM Thread Starter
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Default New Belt hitting bike

Having an issue with a 2003 V92c belt rubbing on the bike
No matter how much we adjust the axle the belt moves left of the front pulley when riding. we finally moved the axle far enough that the belt wont bind up but it is still rubbing on the inside.
when we spin the tire backwards it moves almost and inch off the front pulley to the right (we started with it riding the outside edge)
when we spin the tire forwards it goes to the far left of the pulley just enough to touch the bolts on the case (the rear tire is cocked sideways now with the left side of the axle pushed almost all the way forward)

The bike rode fine until the clutch cable snapped and he had to ride the bike home clutchless but the old belt broke before he made it home.
We used a string to make sure the pulleys are lined up and they appear to be in line

Anyone have any ideas of what could be causing this issue? I don't see any adjustment in the motor mounts or the front pulley and after a few week of reading forums it seems we may just be incompetent?
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Last edited by Bill Crane; 06-19-2019 at 12:32 AM. Reason: forgot details
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post #2 of 19 (permalink) Old 06-19-2019, 01:41 AM
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Don't be too hard on yourself. It can be a pain in the butt to get it right.

For belt adjustment there's really only the right and left axle adjusters to get the belt to line up and even then it can take another time or two after the belt stretches; if it stretches. Belts are funny like that. Some will stretch and others won't; at least not enough to need more adjustment. Once they stretch though; that's it. No more stretching.

If you take a piece of string and run it from the back of the back pulley to the front of the front pulley; the string should touch both pulley's equally; front and back. That gives you a good starting point. Then it's a matter of adjusting tension and angle until it rides in the middle going forward and wants to go off to the left when you spin the wheel backward.

Remember the tension will change with the bike off the lift and when the back wheel compresses the shock. Check it cold and hot. You don't want it too tight or you'll burn up a front pulley bearing or break the new belt or both.
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post #3 of 19 (permalink) Old 06-19-2019, 08:03 AM
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You said you lined up the pulleys with a string so I doubt my suggestion is valid but is it possible you switched the wheel spacers?
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post #4 of 19 (permalink) Old 06-19-2019, 10:29 AM Thread Starter
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Thanks BBob! currently the belt moves right when spinning backwards so we may just be making the wrong adjustments? The problem we are having is the belt moves so far left when rolling forward it actually binds on the bike and when we first tried to adjust it seemed the only way we could go without more binding was to loosen the left adjuster. Might try to go tighter to see if maybe we just needed to go farther?

Thanks WeekendRider for the help. We tried putting the spacers on the opposite sides but they are such different sizes they just wont fit without causing other issues. We even tried putting them on rotated so the bearing side was on the frame but no change to alignment
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post #5 of 19 (permalink) Old 06-19-2019, 10:50 AM
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Again, just thinking out loud here but did you check the tread direction of the tire to make sure you put the wheel on in the correct direction? Just hoping it's something simple.

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post #6 of 19 (permalink) Old 06-19-2019, 10:53 AM Thread Starter
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Yea tire is on the rim the right way. Bike was working great before and the only new parts are the clutch cable and belt
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post #7 of 19 (permalink) Old 06-19-2019, 08:58 PM
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Quote:
Originally Posted by Bill Crane View Post
Having an issue with a 2003 V92c belt rubbing on the bike
No matter how much we adjust the axle the belt moves left of the front pulley when riding. we finally moved the axle far enough that the belt wont bind up but it is still rubbing on the inside.
when we spin the tire backwards it moves almost and inch off the front pulley to the right (we started with it riding the outside edge)
when we spin the tire forwards it goes to the far left of the pulley just enough to touch the bolts on the case (the rear tire is cocked sideways now with the left side of the axle pushed almost all the way forward)

The bike rode fine until the clutch cable snapped and he had to ride the bike home clutchless but the old belt broke before he made it home.
We used a string to make sure the pulleys are lined up and they appear to be in line

Anyone have any ideas of what could be causing this issue? I don't see any adjustment in the motor mounts or the front pulley and after a few week of reading forums it seems we may just be incompetent?
Ok here is what I got. Start with adjusting belt tension and not too tight as the belt gets tighter as it heats up. You don't want it like a piano string.keep axle even using alignment marks on each side of axle, nothing critical. Start belt alignment by spinning the wheel backwards, you want the belt to drift to right side of pulley. Use the left side adjuster ONLY.Tighten the nut to slide the axle back. I use 1/4 turns, and spin wheel backwards again. Spin the belt 4 or 5 revolutions as you look for belt drift. keep repeating this until belt starts to drift to the right and just touches the right side of pulley. Now spin the wheel FORWARD and make adjustments backing off the adjuster nut 1/4 turns or less. Tap on axle nut with a dead blow to move axle forward to seat adjuster rod will not wiggle. spinning wheel forward check for belt beginning to drift left. Keep making adjustments,tapping the axle forward each time, until the belt just moves off the right side of pulley and STOP. Don't try to center it.IMPORTANT part. As you tighten the axle nut try to wiggle the left adjuster as the axle tends to move back. again tap axle forward. keep repeating until finished tightening. Your done.
Damn, I should have just told you to download the shop manual from Bbob.

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post #8 of 19 (permalink) Old 06-20-2019, 10:24 AM
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I forgot the final step, daah .. tighten adjuster nuts on both sides to 8 inch lbs. (or put the bike outside and wait for a strong breeze to blow against the wrench) Just tighten slowly and you will feel the nut definitely bottom then literally a hair more.
You did not say what broke the belt,... just wear, or was that belt rubbing too? ... I know you stated there was no problem before things went to s***, but maybe check for bad wheel bearings or shaft bearing of front pulley or loose pulley. Probably unlikely but easy enough to check. Check pulleys for unusual wear.

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Ness fly bars
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chrome floorboards
cruise control

2004 Kingpin
Victory performance exhaust
customized air box / K+N filter
LLoydz fuel controller
custom oil lines
custom led lighting
custom led third brake lights
Sold ..( my baby, still have some sellers remorse)


2011 XC
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wiseco fuel controller
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post #9 of 19 (permalink) Old 06-21-2019, 02:09 AM
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Quote:
Originally Posted by Bill Crane View Post
Having an issue with a 2003 V92c belt rubbing on the bike
No matter how much we adjust the axle the belt moves left of the front pulley when riding. we finally moved the axle far enough that the belt wont bind up but it is still rubbing on the inside.
when we spin the tire backwards it moves almost and inch off the front pulley to the right (we started with it riding the outside edge)
when we spin the tire forwards it goes to the far left of the pulley just enough to touch the bolts on the case (the rear tire is cocked sideways now with the left side of the axle pushed almost all the way forward)

The bike rode fine until the clutch cable snapped and he had to ride the bike home clutchless but the old belt broke before he made it home.
We used a string to make sure the pulleys are lined up and they appear to be in line

Anyone have any ideas of what could be causing this issue? I don't see any adjustment in the motor mounts or the front pulley and after a few week of reading forums it seems we may just be incompetent?

Hi Bill, is that a pulley tooth with the inner end broken off it? The one 3rd from top in pic, with wiring connector? behind it. Are any others broken off on the inside?
Cheers, Steve.
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post #10 of 19 (permalink) Old 06-21-2019, 08:23 AM
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Quote:
Originally Posted by ObiSteve View Post
Hi Bill, is that a pulley tooth with the inner end broken off it? The one 3rd from top in pic, with wiring connector? behind it. Are any others broken off on the inside?

Cheers, Steve.
Good eyes, here i zoomed in ...Screenshot_2019-06-21-21-22-28-88.jpg

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