Thank you for a very informative thread. I've been considering trying to get the rust off the frame of my 1961 Schwinn Co-Ed bicycle. I dug this bike out of my shed to use for transportation during my kayak trips. Since I kayak alone (not a good practice), I either have to paddle upstream and then down, or the other way around. With a bike, I can chain it to a tree where I want to finish my kayak trip and then drive with the kayak to my put in location. Then paddle downstream, chain up the kayak, pedal back to the car and then drive back to pick up the kayak. Anyway, at first, I just wanted to get the bike functioning again. But in the process, I've fallen in love with the bike and have found myself out of the kayak and riding and restoring the bike instead.