Creaky cranks, what do YOU do?

[shinobi]

Re:

Its an age old one that , some say grease some say it allows the crank to push too far on the taper .
I have to admit to putting a tiny smear of grease on them and i have not used a torque wrench
Paul
ps enjoy the day off

 

[Mike Muz]

Re: Re:

Its an age old one that , some say grease some say it allows the crank to push too far on the taper .
I have to admit to putting a tiny smear of grease on them and i have not used a torque wrench
Paul
ps enjoy the day off

Thanks mate

Early morning ride, followed by some DIY. Replacing guttering ! :roll:

Mike

 

[racer x]

Re:

Could be the alloy pin on the large chainring rubbing on the back of the crank arm when you put force on the cranks .check the back of the crank arm for any signs of contact, if it's the pin hitting the crank arm when it's flexing though force there will be a mark and it could be that making the creeking noise ..have you changed the chainrings on them cranks for a different make

 

[M-Power]

Re:

Agree with posts above also if the cranks are long time 'used' the tapers can get stretched/enlarged and then it's almost impossible to tighten them properly against the end of the axle taper. Then it's scrap time unless you get them welded with material and re ground.

 

[Mike Muz]

Re: Re:

Could be the alloy pin on the large chainring rubbing on the back of the crank arm when you put force on the cranks .check the back of the crank arm for any signs of contact, if it's the pin hitting the crank arm when it's flexing though force there will be a mark and it could be that making the creeking noise ..have you changed the chainrings on them cranks for a different make

Not heard of that one, Ian. Just been to kitchen to check the clearance, around 3-4mm so no issues there. Oh, and yes, the kettle is on !
Just took the cranks off. Bb cups could be nipped up a bit more ( the one you sold me ! ), 8mm bolt threads and axle cleaned, tapers slightly greased, and back together, with some threadlock on the allen bolts. Nipped up pretty tight. Let's see what tomorrow brings.

Mike

 

[Mike Muz]

Re: Re:

Agree with posts above also if the cranks are long time 'used' the tapers can get stretched/enlarged and then it's almost impossible to tighten them properly against the end of the axle taper. Then it's scrap time unless you get them welded with material and re ground.

Cheers,

Had to bin a l/h M563 one a while ago for that very reason. These are sound though

Mike

 

[Splatter Paint]

Re:

Grease BB cups and all over the chainring bolts and where the ring touches the arm, I've had the rings creaking on the spider before.

SP

 

[ishaw]

As above. Copper slip chain ring bolts and make sure they are tight. Same with bb and crank bolts. I've never greased the bb axle on a Sq taper.

 

[Bullpup]

In the past I have used a well padded G-clamp to pull the cranks in tight.

 

[retrobikeguy]

Re:

Headphones.......

Youll find the problem out sooner or later whilst listening to a great tune of your choice

RBG