Originally Posted by
wrk101
Step 1: Focus on top tube length. Lots of sizing tools out there.
Step 2: Measure bicycle inseam, not pant inseam, I bet yours is higher than you think.
Step 3: Standover isn't that important. My road bikes all have zero standover clearance (I have really short inseam and a long torso). To get a long enough top tube, short of getting a frame custom made, you have to give up something. One reason I do MTB drop bar conversions is to get a longish top tube.
That Univega looks like not a good choice for someone with a long torso. Typically, seat tubes are measured center to top. So I bet that bike has a 64cm Seat tube and a 60cm TT (top tubes are center to center). Thats one problem on some vintage bikes. As the seat tube gets longer, the top tube does not increase in length proportionally. It varies.
Go to a sizing site and figure out what top tube length you need.
You are right, when I measure inseam using techniques from bike fit calculator it's more like 35.5" But damn, my torso must be long, as calculator says 70cm top tube. I may have to seriously look at MB frames I guess.