Thorn Cycles Forum
Community => Thorn General => Topic started by: balboa on September 01, 2007, 06:20:09 PM
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I took my new Thorn Raven out for a proper ride today for the first time and I've noticed that there is a noticeable clunk/movement within the gears which feels like a dodgy bottom bracket.
Does anyone else have this issue? it's quite annoying, it happens on every turn of the pedals and it's a bit of a jump. hardly a smooth ride!
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Sounds familiar.
Feel under the BB for the two big silver nuts. Check that they're tight.
Hope this helps.
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It certainly does sound as if either the eccentric bottom bracket bolts are loose or that the ebb itself is loose through not being aligned centrally.