Thanks @willyg289... I bought the Klein new in '97. It's had a few lives. For the past 10 years, it's been a single speed. The gearing is the third setup - each time going a little bigger. 53-15 seems to be perfect for the moderately hilly terrain around Atlanta. Any smaller (last was 53-16) and I spin out on two sections of our morning group ride - mostly flat, somewhat downhill sections... usually around 32-35 mph.That’s gorgeous, Zaskar. Beastly gear, though.