Hello there,
I stripped out the pedal threads on my 180mm old-style (tapered bb) crankset last year and can’t find a place to replace it. I don’t want to go to splined bottom brackets, but my choices are pretty limited.
Anybody know a parts supplier who might have an old 7410 left dura ace 180mm arm laying around. I know that’s a lot to ask, but why not ask?
Chad Walton
you might want to take it to a machine shop and see what it would cost to put a helicoil in it. Basically, this is drilling a bigger hole in it and replacing the threads with a helicoil( a spring like thing that replaces threads). A lot of things use these if strength is needed when threading aluminium.
bob
Bob,
I’ve never heard of such a thing, but its worth a try. Thanks.
Chad
Agreed,
Most bike shops can get the proper helicoil from some vendor, Wheels Manufactering makes some. I’ve got them in all of my Tandem’s crankarms because I was too cheap to buy a set of tandem specific cranks so I used some old cranksets to make the crossovers, no problems. Many of the bolts on your Shimano derailleurs are helicoiled.
Find a shop that has done it, and do it.
-SD
cdw,
Helicoil, definitely the way to go in this case.
Hi, friend has a complete set of 180mm DA cranks that are in new condition he would like to get rid of, cheap. Interested?