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@hussy
thought i could fire this one out. I got an old 70's edddy merckx frame with the old style bolt on crank arm set. I want to upgrade the bb and crank set, but how do I know what threaded type it is? I have a serial number under BB and sent that off to a merckx site (i hope) to find out. How do you check serial numbers? I have checked sheldon's site and will read it again to see if helps me. Hope you all very well and having fun whatever you up too. ps. thanks for any advice