In a message dated 7/19/2005 12:38:49 AM Eastern Daylight Time, mitch.harris@gmail.com writes:
<< What do you think the "15" above and to the left of the seat cluster indicates? 15cm would be about right for distance of BB in front of the seat cluster. >>
It's the seat tube angle. Subtract that number from 90 degrees and viola! In this case, in our terms, it's 75 degrees. (Merckx's frame apparently was 75 degrees! Pretty unusual for a guy that big!)
Dale Brown
Greensboro, NC USA