Technical & Reference Section > Tech and Restoration

Tech engineer question

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rooski:
Its because theres no lubricant between the 2 parts,they are binding on each other,get some copper slip or grease on the threads and under the bolt head :daumenhoch:

Long bolts are worse as they twist slightly under load, then slip,causing the squeaking noise,some times you even get a spark :D

popedante:
 fook all to do with the bolts , probably your wrist creaking    ;D

brummie:
overtightening  :shocked:
the bars crimping  :-\
the seatclamp hairline fracturing  ???

 :D

Peter J:
Not Friction as this is a different force, friction is caused when two surfaces are "pulled" across each other

I think you are describing stiction the frictional force to be overcome to set one object in motion when it is in contact with another

Basically you apply force to one part and at a particular point the (kinetic) energy stored in the material “gives” and moves rather than dispersing the energy into heat (friction) to creek you hear is the energy changing into sound (stiction).

Stiction is within the group of forces under the friction family.

A good example of stiction is when you tighten the wheel nuts up on your car and you get that creek as you finish tightening them up.

I can also give a long winded answer  ???

dan-dare:
 ;D ;D ;D

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