In a message dated 5/31/02 5:46:15 PM Pacific Daylight Time, Wdgadd@aol.com writes:
I never realized that the early cranks had this different arm/spider
interface. Was this design weaker, stronger? Probably more difficult to
produce. >>
It's been machined or filed away to eliminate "the crack". Notice the file
marks.
Stevan Thomas
Alameda, CA