Sheared bolts on rear sprocket - Victory Forums - Victory Motorcycle Forum
 
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post #1 of 4 (permalink) Old 07-30-2011, 03:07 PM Thread Starter
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Exclamation Sheared bolts on rear sprocket

Last week a freind of mine called and said he was dead on the highway and needed a trailer. When I arrived and looked at his bike it had sheared all the bolts off in the wheel hub,broke a chunk out of the swing arm where the wheel adjuster is, and ruined the sprocket.
This is on a 2010 XR with 9500 miles on it. Have any of you heard of this happening before, and could it be a problem that needs to be checked on a regular basis, and if so, how would you check it?

2011 ness XC
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post #2 of 4 (permalink) Old 07-30-2011, 06:34 PM
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Originally Posted by elmo57 View Post
Last week a freind of mine called and said he was dead on the highway and needed a trailer. When I arrived and looked at his bike it had sheared all the bolts off in the wheel hub,broke a chunk out of the swing arm where the wheel adjuster is, and ruined the sprocket.
This is on a 2010 XR with 9500 miles on it. Have any of you heard of this happening before, and could it be a problem that needs to be checked on a regular basis, and if so, how would you check it?

2011 ness XC
Was the pully removed on a tire change recently? Was loctite used when re-assembled?

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post #3 of 4 (permalink) Old 07-31-2011, 10:06 AM Thread Starter
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What was left of the bolts in the hub,were still tight. yes it had a rear tire installed by the dealer about 6 weeks earlier. Dealer says they did not remove the sprocket to change the tire. All parts are being shipped back to victory to check.
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post #4 of 4 (permalink) Old 07-31-2011, 10:46 AM
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It's not uncommon for belt driven motorcycles unfortunately. Normally it can be tracked back to the bolts being removed from the sprocket and re-installed as Noe alluded to. Many people don't re-use sprocket bolts because once they are tightened to spec they stretch.

Occasionally there's no known reason for this to happen though. Could be many different things such as a faulty batch of bolts, a warped pulley, or even bolts that were over tightened.
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