Originally Posted by Cougrrcj

Even stock the '75 S-10S was relatively light for it's day at 26.5 pounds - pretty damn light for a bike riding clincher rims! Schwinn was forced to source their 'Schwinn-approved' Japan-sourced 'lightweights' to compete. The '77 Schwinn Super LeTour 12.2 and later 11.8 was a reference to their weight in Kgms (26.9 and 26.0 pounds respectively).

The S-10S can be made lighter pretty easy - ditch the stock heavy Akai wheels for a lighter set (mine now rides on Sun M13IIs and sealed bearing hubs) PLUS the original wheels use unhooked rims so you are forced to use heavier wire bead tires. Between the wheels and Kevlar-bead 27x1-1/8 tires you save well over a pound. Ditch the steel seatpost - save another half pound. Of course you can lose the relatively heavy Fujita leather saddle for a plastic ass-hatchet to save a few more ounces, but I like to ride - and not be punished!

As-ridden and shown in the pic above of my blue S-10S, it STILL weighs ~26.5 pounds - WITH the rear rack and triple crank... add the full water bottle (1.5 pounds) and tool kit/spare tube and (another 1.5 pounds.) Frame pump - another .5... So close to 30 pounds as ridden. Why do I keep the rack? Comes in handy to carry my change of work clothes (pants/shirt).

As another couple of weight data points - my triple-butted CrMo '86 Miyata 710 weighs in at 23.6 pounds., and the '84 Viva Sport I got down to 24.1 pounds (same 27" M13II wheelset as the Fuji)