square taper damaged

cchris2lou

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My left CBR crank is damaged at the taper . when I put it on a BB , there is a lot of play . I have tried to put foil between the bb and crank but that doesnt work , any ideas ??
 
classic cook bros, curse jacks name & throw it across the room ;)
any kinda shim will be a short term fix. sorry, but its SNAFU
 
throw it, its worth any hassle kinda hassle. you can get them £15. (dont know the make cbr though..)
they are made of soft low grade alloy, you can heat them up in a cup of boiling water, them whack it on real tight, but after a while, (if the taper is worn) it will just work loose.
 
Why I use shimano.

Cooks cranks are wonderful when new. Put 'em on and leave 'em on and dont weigh more than 12 stone and you will be fine! ;)

Sorry, but I know of no quick fix.
 
Re-file the end of the b/b taper to match the new angle on the worn section
You'll have to do to opposing side the same so it goes on

Sorry ,thats the only answer i can think of,offhand
 
any repair will only be a bodge once the alloy is damaged it finished good lesson tighten your cranks amd check again after a couple of rides and retighten welding and machining not an option on forged alloy a definate future weakening and potential breaking point
 
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