I'd like some input on my fit on a '85 Club Fuji I picked up yesterday. I'm asking here instead of road because perhaps there's fit factors I don't know about vintage bikes. But please don't go into tolerances for how I'm demonstrating this. I'm an engineer, and use to be a bike mechanic.

What's going on here is there's a 90mm quill stem on, and a 110mm threadless stem below it. The White line is a 120mm stem length that was measured out by measuring pixels and making a line in ratio to the 90mm and 110mm stem. The red, yellow and orange lines are lines from the front axle through the theoretical bar position. The frame is a 58cm, but the top tube is quite short for that size!

Hey, nice bike!

As per your catalog attachment, the 85 club does have shorter top tube than say the upper line. I checked a few other years and the club top tube did vary over the years. I ride 58 or 61cm in classic 80s geometry as generally all you find for Japanese or Trek steel. What is nice about old fujis or treks is you have all catalogs online and can look at different model years specs/geometry.

Not to push you down the road to a dark addiction, but I suggest keeping an eye out for a deal on a 24in/61 cm trek or similar japanese frame. The 24 inch treks offer nice long top tubes and even some 22.5 have pretty decent tt. When I am riding one of my 58cm it tends to be much racier style/feel vs the 61cm which can still be ridden fast but with a much relaxed feel. I am 6ft, 185 for reference.

Funny I read this right now. I JUST put it online to see what I'd get. (Listing $450)

Thanks for the input. I was really just looking for a conformation on the incorrect size. I'm sure a 61cm would be too big for me, unless it was a Club Fuji. I've found my ideal fit is ~57-57.5 ETT with a 100-110mm stem.