I should mention that getting this bike to a good road-worthy condition is involving my teaching Al all about bike repair. Under my supervision, he has wrapped the handlebars, removed and re-installed the rear tire, and trued his wheel. He's done various other things and is quickly becoming a good bike mechanic, having had little previous experience in mechanical work. He's a visual artist, so his patience and intelligence bring him from art to craft readily. The bent rear rim was pretty bad, so I loosened the spokes near the bad low spot and whacked it with a 2x4 and a hammer. Then we loosened all the spokes and lubed them and retensioned the entire wheel. At that point, I taught him to true wheels, which he did until the wheel was within a tolerance of about a half inch. I brought it to within a tolerance of about 2 mm, which is the best I think it will get. He says that the bike rides more smoothly now with a round and true wheel. After our late-night test ride, I walked him through toe-ing in brakes to eliminate squeal.

Also, we've been raising the seat one half inch at a time, getting him used to a proper leg extension.