I agree with the comments made by Tom and Angel about sizing a vintage
frame that has not been ridden before purchase. But there's one measurement that no one has mentioned\u2014frame stand over height. For me
this is the single dimension that lets me know whether a frame is suited to me. It's a special measurement because it is that single number that combines seat tube length, seat setback, BB drop and frame
angles. No matter what those measurements may be they all come together in one number. I have a favorite bike and it's stand over height is my gold standard for what works for me.
Michael Allison
New York, NY