Trying to educate myself to the old bike world. I have a 57 Spitfire. I'd like to add a bike and a couple Schwinn Heavy Duty Models have come by me. Always yellow. What is the difference - actual heavier frame? Are these desirable? Thanks.
I have a red 66 Heavy Duti. It definitely has heavy gauge spokes. According to the Schwinn catalog, the frame is reinforced, but I don't know if this is visible to the naked eye. Heavy Duti or not, my fork is still bent.