Bicycle Mechanics - Creaking from stem
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04-20-06, 09:54 AM
on my older (late-80's, early-90's) Basso, I get a creaking from the headset when I crank down hard and apply a little torque to the bars. I have repacked the headset and the bearings look good, there are no signs of wear or grooves in the race or cup (not sure if that is what they are called) and I put grease on the quill stem itself, there is no play in the headset. I have the stem down as far as it goes (cinelli 120 with flipped and chop bars) into the origanal steel fork tube with Record headset. Is there anything else that I can do?
04-20-06, 10:04 AM
Can you reproduce this at home by yarding on the bars, or is this an only while in motion thing? Creaks can sound like they're coming from a lot of places they aren't, remember you're sitting on a giant set of wind chimes somebody welded together, so there's lots of opportunity for resonance.
How much do your bars flex when you really have at it? You could be getting a little creak from the bars not being clamped by the entire width of the stem if your bars are flexing a little, but that's unlikely. Did you lube the contact surface between the stem and its expander wedge? Also, try raising the bars like 3 mm and seeing if that helps, as it might be the stem being jammed against the top nut.
OK, that's all the BS theories I've got, somebody else want a shot at this?
04-20-06, 10:25 AM
try taking the bars off, wiping the inside of the stem and the contact surface of the bar with solvent or WD-40 or something. use just a little bit. basically, I've found that creaking from the bars is a lot of times caused by just a little bit of dirt in the area between the bar and the stem.
or your bars could be fatiguing. I posted a thread a while ago about my bars that broke. they creaked due to dirt...then creaked due to fatigue. If its an old bike, you might want to go ahead and replace the bars
04-20-06, 10:50 AM
Thanks for the ideas, I will definitely do some of these ideas tonight
I only greased the stem, not the expander wedge or bolt.
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