Crank pedal-thread damage

trail jacker

Hi all,

Went out for a ride yesterday and after about 5 minutes my non-driveside pedal had loosened as i rode and has partially stripped the thread of the crank arm. Only about a quarter of the total thread is missing, and the pedal screws back in normally (not at an angle). I am really reluctant to replace the crank arm - its a brand new crankset that is literally 2 rides old. Could I put loctite in the crank arm thread to hold the pedal in place? I know normally you use grease but considering the thread damage I am a bit worried about it reoccurring. Thanks!

cooldad

Ride it and see.

nicklouse

or take ot to your LBS or an engineers shop for a thread saver/ helicoil.

it is a common issue.

ElliesDad

Happened to me with a brand new Boardman Comp HT, took it back to Halfords and they replaced the crank arm under warranty.

trail jacker

nicklouse wrote:

it is a common issue.

Yeah, I have noticed its pretty common - they could do with having the pedal axle go right through the crank arm and then be secured by a lockring on the back of the crank arm or something, guess I will see how tight I can get the pedal then take it from there.

estampida

back to the shop

the crank was not heat treated correctly at point of manufacture

The Rookie

That's a massive assumption and probably hopelessly wrong!

warpcow

estampida wrote:

back to the shop

the crank was not heat treated correctly at point of manufacture

cooldad

Or check all bolts etc regularly