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 ??
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.
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