Old 03-21-14, 11:56 AM
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More modern cranks (such as your 7410) moved the tapered portion of the crank further inboard relative to the arms and rings so that a shorter lighter, stiffer) spindle can be used without changing the position of the rings and arms. You need to use the spindle length that is appropriate for the crank, spindle length doesnt really correlate to the frame unless it has some unusual clearance problem.
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