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Tech engineer question

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Gary72:
I should probably just ask Peterj but would get confused by the answer :-[
Why is it that when you tighten some bolts ie stem bolts that they make that creaking/screeching sound?
Is it friction between bolt and stem? The metal stretching? Am I just been to heavy handed?
Doesn't seem to do it with all bolts, I've heard it from stem, seat clamps etc.

pickle:
Could be the types of metal, ie: steal nuts on alloy stems and clamps?

kungfunky:
Screeching sound ?......Friction ?..... Stretching ?.....Yup Peter J's you man for this  :daumenhoch:

CD17:
It will be friction between the stem wedge & the inside of the forks as you tighten  :daumenhoch:

superbikedan:
add grease :daumenhoch:

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