Was gifted this August 1974 Schwinn Heavy Duti, I installed the new water slides since the bike had them removed or repainted at some time in the past. Seems like the wheels, crank, pedals, and seatpost are original but someone did a "modernization", or couldn't find OG parts. The fenders, seat, grips, Handlebars (maybe), baskets, and tires are all aftermarket or non original. I'm going with blackwall tires, and hopefully going to find Schwinn middleweight fenders eventually. I am having a tough time sourcing more info on the heavy duti via Google, anyone have a better source for info on how this bike would have been equipped in 74? Thanks!
by Alijony