Stripped thread in cranks. Safe?

Posted on Sat 7th, May 2011

• #1

singspeed

I just pounced on a brand new, unused, perfect condition campag chorus crankset I found on gumtree for a tenner. Bargain I thought.

Until I got home, realized that the seller has probably tried forcing the wrong pedal into the right crank/forced in at an angle so a third of the thread is completely stripped.

Is it still safe to cycle with only half to 2/3 of thread still intact? I am doubting it but just thought I'd ask. Screwed a pedal in and it fits snug as the rest of the thread is brand new. These cranks haven't been used (apart from someone wrecking the thread while trying them out with pedals) and they're obviously worth a pretty penny so I don't want to end up not using them on my build.

Cheers for any help.
• #2

O'Shane

I wouldn't be comfortable using them.
• #3

Pedal-Lust

loctied?
• #4

singspeed

Was thinking about loctite.

The other option I was considering, after recently getting an aluminium part welded for £5 in Colindale, was to get the same guy to build some aluminium into the thread, drill it through and retap?
• #5

Cheesecake_intl

Take the cranks to a decent LBS, and get them to Helicoil the arm.

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