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Gents can anyone offer some help or advice please
Got a quill stem on the road bike and the handle bars rotated downwards as I went over a speed bump the other day. Gave the clamp a tighten at the road side and carried on my way, although the handlebar angle was quite right. Had a go at sorting out the angle of the bars last night and here is the problem ... in untighting the bars to get my preferred angle ... I now can't get the clamp bolt to tighten and the bars are completely loose
Have l chewed the thread up? Need a new bolt? Or am l missing something silly/some technique to get that little sucker to tighten.
Thanks in advance
Oh and just a little vent... The sun is up here and had a lovely 60 miler planned this morn, let alone needing the bike on the road ASAP to allow me to train for an event in a months time.... Grrrr ...
Stripped thread cracked stem crushed bars take it apart and inspect it.
Is it a new (to you) set up? Cinelli stem?
Cinelli quill stems were a slightly different size to everybody else (26.0 against 25.4 IIRC). IF this is the case you could slide in a coke can shim and clamp up.
I'd still be inclined to take it apart and check the parts as above, just in case.
As above, cut a shim and slide it underneath the clamp. It was probably looser than you thought it was from the beginning. I've had non-quill mounted bars rotate after a heavy impact with a pothole and they were correctly torqued. So hitting a speed-bump and rotating means they were never tight enough.
Thanks gents.. I'd had chewed the thread up.
Lbs sort me out a treat and lm back on the road tomorrow