At 6/8/2006 05:27 PM -0700, Tromper wrote:
>The question I have is pretty simple. Is there an inexpensive way to put a
>different (cotterless) bottom bracket into the 71mm shell?
If it's 24tpi threads, all you have to do is use a 73mm BB with a 2mm fixed cup/freewheel spacer under the fixed cup.
If it's the dreaded 26tpi then just find a local framebuilder to
retap to 24tpi. If you are really persuasive, you might get him to
face it down to 68mm. The last time I had this done the builder owed
me a favor so I'm at 68mm. Some people claim you would have to fill
the old threads with silver or brass before retapping. Modern BBs
have so many threads of engagement that I don't see a need for
this. Gotta be stronger than aluminum.
>A secondary question comes up, since I live the the hilly Puget Sound area,
>would be appropriate size to make this a triple vs. the double that it's
>standard with?
Spindle length for a triple varies widely from crank to crank. Anywhere from 133mm to 110mm.
Mark Stonich;
Minneapolis Minnesota
http://mnhpva.org
http://bikesmithdesign.com