Hello everyone! I'm new on the forums, so I thought I might introduce myself here. This is my commuting bike:
It's a Schwinn World Sport, made in 1990. I got it this spring off Craigslist for $45, and have been putting some work into it since then: I have installed a new saddle, grip tape and pedals, Cane Creek SCR-5 brake levers, new cables and housing all around, Kool-Stop brake pads, Schwalbe puncture-resistant tires, a rack and rack trunk, and a set of Cat Eye lights for safety.
I replaced the shifters with an inexpensive set of Sun Race clamp-on downtube shifters, after the original stem shifters broke. I've also cleaned, re-packed, and adjusted the headset and bottom bracket. I've been doing all this work myself, which has been a blast in itself.
I'm up to 600 miles on it so far - I commute from Queens to Manhattan, which is good for 20 miles a day, 2-3 days a week. I started out with this inexpensive bike to see if I would even like bike commuting, but now I love it, and I'm pretty attached to the bike too!