Originally Posted by
Petersrock
On my way to HF today to pick up a caliper. Im not a guessing type but Im just not sure how this works. Ive been reading everything I can to try to learn its not the easiest thing in the world to figure out when its your first time dealing with these vintage bikes. I will update with measurements this afternoon.
Another good tool to obtain is a magnifying glass. With the proper magnification you can easily count the number of threads per inch on most parts...........and............uh...................oh......................The biggest mistake you can make is to try and get the wrong size threads to fit together. Lots of nice frames have been screwed up when mechanics tried to kludge the wrong size bottom bracket on it. Be certain about your drivetrain threads before you start engaging the wrench. Grease up the threads and make sure your wrench flats make firm purchase on the part before you torgue it down. Be good. Have fun.