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xs650 > > Motorcycle Systems > > Drive > > chain whip?


chain whip?
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yamahog
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Joined: Apr 21, 2005
Posts: 47
Location: west virginia
PostPosted: August 1, 2006, 6:46 pm    Post subject: chain whip?
I've noticed while riding down the road at about 55 mph that the top of my chain whips up and down and causes alot of vibration. The chain is adjusted fairly tight. My frame is a rigid with a 3 inch streach in the back. Does anybody have any ideas??
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kingwj
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Joined: Sep 04, 2005
Posts: 801
Location: Delaware
PostPosted: August 1, 2006, 7:25 pm    Post subject: Re: chain whip?
A chain tensioner? I remember them from my IT250 days. Probably some sort of harmonic going on.
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jayel
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Joined: Apr 16, 2006
Posts: 3417
Location: SE Iowa 1974 TX650A
PostPosted: August 1, 2006, 8:07 pm    Post subject: Re: chain whip?
make sure your chain doesn't have tight and loose spots it may be strecthed in some links, a off center sprocket could do it too, hard to check run out on the teeth tho'
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yamahog
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Joined: Apr 21, 2005
Posts: 47
Location: west virginia
PostPosted: August 2, 2006, 9:59 pm    Post subject: Re: chain whip?
The caain and sprockets do need replaced. Maybe that's the problem?
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xsjohn
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Joined: Jul 30, 2006
Posts: 5857
Location: North Carolina USSA
PostPosted: August 3, 2006, 12:48 am    Post subject: Re: chain whip?
Chain whip is a pain. Guess we all can suffer from it because of the engine pulses can set up a vibration in the chain. This can also be caused by improper carb main needle settings at the crusing speed you described 55.

John Underwood
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