butlergremlin Posted April 29, 2009 Share Posted April 29, 2009 What could be causing this?When between about 30 and 50mph there is a vibration on the front wheel and handlebars this is most severe at about 40mph. If i leave go there is a violant "wobble" Any ideas? Quote Link to comment Share on other sites More sharing options...
iain Posted April 29, 2009 Share Posted April 29, 2009 hi mate, i think by the sounds of it your wheel needs balancing.if i were you id take it to a bike shop or a mate that can do it for you. Quote Link to comment Share on other sites More sharing options...
Guest Posted April 29, 2009 Share Posted April 29, 2009 What could be causing this?When between about 30 and 50mph there is a vibration on the front wheel and handlebars this is most severe at about 40mph. If i leave go there is a violant "wobble" Any ideas?1st don't leave go, you'll get a tankslapper, and i agree with cb1, your wheel is out of balance.. Quote Link to comment Share on other sites More sharing options...
Hoody Posted April 29, 2009 Share Posted April 29, 2009 Check your tyre pressures, and condition of your tyres.If they are worn, gone out of 'profile' this could either cause or exaggerate the oscilation. Wrong pressure could also amplify or cause an issue.Check tyre is sitting squarely on the rim too.Do you have a top box or carrier fitted?This can also effect handling as you describe (especially at certain speeds as other dynamics start to kick in). Quote Link to comment Share on other sites More sharing options...
butlergremlin Posted April 30, 2009 Author Share Posted April 30, 2009 Ok iv had new tyers put on today, pressures are fine, Wheel has been balanced, I do have a top box but this seem to be a very front end vibration!The problem is slightly better but still causing a problem!Any more ideas? Quote Link to comment Share on other sites More sharing options...
Stu Posted April 30, 2009 Share Posted April 30, 2009 get the head bearings checked out and remove the top box and take for a test ride Quote Link to comment Share on other sites More sharing options...
Guest Posted April 30, 2009 Share Posted April 30, 2009 Ok iv had new tyers put on today, pressures are fine, Wheel has been balanced, I do have a top box but this seem to be a very front end vibration!The problem is slightly better but still causing a problem!Any more ideas? apply the front brake hard and slowly rock the bike back and forth, any movement of the forks except travel means the head bearing is loose or needs replacing..put the bike on the centre stand and have a mate push down the rear, leaving the front in the air..slowly turn from right to left and feel for notchiness - head bearing shot. needs replacing. (mainly with older bikes that had ball bearings instead of needle bearings.. if this is the case replace with needle bearings)also grab the the base of the forks by the front wheel and press on one whilst pulling on the other baiscally rocking them it could be your yolks (alloy thing that holds the forks) is out of true and loose, line up and tighten as per manual / manufacturer spec. Quote Link to comment Share on other sites More sharing options...
Guest Posted April 30, 2009 Share Posted April 30, 2009 as said wheel alignment or even check ya disks for warping!! HTH Quote Link to comment Share on other sites More sharing options...
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