In a message dated 11/2/01 8:23:06 PM Eastern Standard Time, lberg@ventoux.com writes:
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This is addressed by Jobst Brandt in the rec.bicycles FAQ at
http://draco.acs.uci.edu/
Selective quotes:
"Crank failure from "over-tightening" is caused by the re-tightening of previously properly installed cranks." (from Paragraph 4)
"Because cranks squirm farther up the taper when stressed highly, the unwitting mechanic believes the screw got loose, rather than that the crank got tighter. By pursuing the crank with its every move up the spindle, ultimately the crank will split." (from Paragraph 8) >>
I know you are just quoting Jobst but as a professional in the bike biz for 27 years+, I say that bit about cranks splitting through over tightening is absolute hog wash.
Dale Brown
Greensboro, North Carolina