vibration in fork/wheel?
I've got some back/forward movement, vibration going in the front of the bike under heavy breaking. You can see the fork shuddering back and forth.....
Ribble GF with Intrepid wheelset and Chinese carbon fork.
It only appeared when the wheels and fork were fitted.
So, I was thinking the QR could be loose so tightened it and swapped it for another, this hasn't helped. I've checked the headset and can't find any play, but give it a tweak anyway. I've checked the wheel and it is as true as it can be to my eye on my stand. Could It be wheel flex?
Next think I'm going to try is another wheel.
And finally I'll put the old fork back on.
Is there anything obvious that I've missed that could explain this away?
Cheers
Ribble GF with Intrepid wheelset and Chinese carbon fork.
It only appeared when the wheels and fork were fitted.
So, I was thinking the QR could be loose so tightened it and swapped it for another, this hasn't helped. I've checked the headset and can't find any play, but give it a tweak anyway. I've checked the wheel and it is as true as it can be to my eye on my stand. Could It be wheel flex?
Next think I'm going to try is another wheel.
And finally I'll put the old fork back on.
Is there anything obvious that I've missed that could explain this away?
Cheers
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Comments
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maybe it's brake judder, check rims are clean, try toeing-in the front of the brake pads slightly, about 0.5-1mmmy bike - faster than god's and twice as shiny0
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sungod wrote:maybe it's brake judder, check rims are clean, try toeing-in the front of the brake pads slightly, about 0.5-1mm
Thanks0 -
Check the headset also (pull the front brake on hard, and rock the bike back and forward. You'll feel any free play quite easily)0
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Thanks. Already tested headset can't feel any play.
I'm just hoping its not a faulty fork.0 -
So, I've cleaned rims and pads (also tried different pads), toe the pads in slightly and whilst the judder isn't quite so bad it is still there.
I've had the fork out and all looks OK, headset is all good as far as I can tell - there is zero play that I can feel/see.
I'm not 100% happy with the QR, so I'm going to try a Shimano one from my MTB.
Any thing else i can check - it driving me mad lol!0 -
Is the front wheel perfectly true? Tighten up the clearance of the brake blocks until they barely clear and spin the wheel to check0
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Wirral_Paul wrote:Is the front wheel perfectly true? Tighten up the clearance of the brake blocks until they barely clear and spin the wheel to check
Fairly certain its true. I'll check again on my truing stand.
couple of pics of headset:
The looks like a gap between bearing and crown race but it sits squarely
gap between steerer tube on fork crown, prob 1mm, but there is ZERO play...
This is the headset as supplied by ribble with the frame.0 -
I had this just 3 weeks ago. Took the headset, cleaned and replaced it - but was still there but crown race looked a little wonky, or maybe it was just me looking for a reason, so I took it to the LBS who fitted a new headset - and heres the thing - when I got it back the skewers were much tighter than I do them - so I dont know whether teh vibration was play in the headset or slightly loose skewers. Might be worth checking that at least.The dissenter is every human being at those moments of his life when he resigns
momentarily from the herd and thinks for himself.0 -
Cleat Eastwood wrote:I had this just 3 weeks ago. Took the headset, cleaned and replaced it - but was still there but crown race looked a little wonky, or maybe it was just me looking for a reason, so I took it to the LBS who fitted a new headset - and heres the thing - when I got it back the skewers were much tighter than I do them - so I dont know whether teh vibration was play in the headset or slightly loose skewers. Might be worth checking that at least.0