Loose Crank

[2k8-looney]

Hello there

My crank arms keep coming loose no matter how tight i do them up, I have tried putting loctite on them but they still come loose so when im out riding i am constantly tightening them witch gets really annoying.

What do think could be wrong ?

cheers Steve

[Gogz-]

if it keeps coming loose and you have tightened it right up its ether going to be a worn crank arm or BB .

i had the same problem both the square taper on the crank and the axle of the bottom bracket were worn , as far as i know the only way to sort this is to replace them

[forteh]

If its square taper then youre about stuffed as youve probably stretched the square by overtightening it, if its isis then its just the crap design of the isis spline

Loctite wont glue a rocking spline together, it will stop a tight spline or a bolt from coming loose though

That is assuming you used the loctite properly.

[tom aky]

Hi i had the same problem when the thread on the crank bolt and BB messed up the crank just falls off after riding for about 5seconds so im replacing the BB id suggest you do it aswell. Hope this helps.

[onzamann07]

i had this with my old onza cranks? i put a bit of metal strip inbetween the crank and bb and it held for about 2-3 month! i got it from them steel bands that hold crates of bricks together hope this helps ?