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Technical & Reference Section => Tech and Restoration => Topic started by: steve69 on October 15, 2010, 11:03 PM

Title: crank arm repair
Post by: steve69 on October 15, 2010, 11:03 PM
Hi all,

anybody had any sucess repairing worn alloy square taper crank arms i.e. sugino maxy/suntour vx

only slightly out on LH arm but you can feel it notch when riden :(
Title: Re: crank arm repair
Post by: boofy44 on October 15, 2010, 11:29 PM
probably easier to make some small shims or shim.wouldn't of thought you
could sort the actual arm out.
Title: Re: crank arm repair
Post by: stevied on October 16, 2010, 10:49 AM
chop up a bit of coke can or baked bean can and wrap it around the spindle  :daumenhoch:

Title: Re: crank arm repair
Post by: bof on October 16, 2010, 12:11 PM
A peice of tape measure would make a better shim than a coke can . :daumenhoch:
Title: Re: crank arm repair
Post by: Peter J on October 17, 2010, 07:01 PM
I had the same problem on a set of maxy cross's

I took it to a company I know who did broaching (cutting square holes) their adivce......................shim it  :daumenhoch:

Becuase of the age of the alloy + its forged alloy + the cost of broaching it would be  :uglystupid2:

You can buy shim steel but to be honest........I had "coke can" shims in em for about 6-8 months and with my 19 stone bouncing on them the were still nice and tight when I sold em  :daumenhoch:
Title: Re: crank arm repair
Post by: QUADROPHENIA on October 17, 2010, 08:12 PM


wouldn't bother, it aint as tho your gonna ride it  ::)
Title: Re: crank arm repair
Post by: steve69 on October 17, 2010, 11:03 PM


wouldn't bother, it aint as tho your gonna ride it  ::)
Cheers for that Pete :yahoo_silent:

next time your down my end give me a shout and i'll put some 'shopper' tyres on one of my bikes and come and play.
(it didn't help that i was coming home from a night out and feeling like  :buck2:)
Title: Re: crank arm repair
Post by: steve69 on October 17, 2010, 11:10 PM
Thanks for everyone else's replys

I was thinking the shim route but didn't know if there were any other ways of doing it
i.e. squaring it up and putting a washer on the front to force it further on the taper :-\

so thanks  :daumenhoch:
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