Originally Posted by
phtomita
Hello,
I have a Nishiki Tri-A frame built with modern components and my handlebar rotates forward when I put more weight on tops.
It happened recently when I found a snow/ice patch on a trail and found myself balancing and to get through, but walked most of the parts
.
And recently when I climbed some standing up.
I can loosen and tight back to the position I want, but this keeps happening few times now.
The size of quill stem and handlebar are for 25.4mm, so it is not an unmatched size issue.
Any suggestion/opinions are welcome.
If you're tightening the bolt with seems like (or measures as) sufficient torque but the handlebar slips, pull the stem bolt and grease the threads on it and the stem and retighten.
If the stem is nearly fully closing around the bar (i.e., if the slot is nearly closed), cut a shim from a soda can and insert it between the bar and stem. If the aluminum from the soda can is too thick, use aluminum foil.