I hope there are some dopers who can hellp me with a couple of bicycle building questions.
I’ve been shopping for some bicycles for my GF and her kids I recently came across a guy on Craigslist who had 2 Specialized mountain bikes(a Hard Rock and a Rockhopper). He had left them out in the rain quite a bit. The chain is rusted so that it won’t flex on both bikes, ,and the rear gears are rusted pretty badly and there is some surface rust on the chrome handlebars on one. Is there a solution or cleaner that I can take the parts and drop them into and remove the rust? I’d rather do that than try to clean every little tooth on the gears. None of the parts are rusted internally, its all surface rust, although some of it is pretty heavy. The second part of that question is whether its even worth cleaning them, or if I should just go buy a new chain and gears. Roughly, what would I expect to pay(note that I don’t need anything elaborate at all, just something decent that works). The cables that run to the brake pads are also rusted, I’m assuming it’s just best to replace those too, or should I try to clean them?
In case you’re wondering why I’m even dickering around with them, he gave them both to me for 20 bucks. I figure even if I spend some cash on parts for each of them, you can’t beat 60 bucks or so for each bike.
Throw in the Univega DS900 I found for 40 bucks at a pawn shop and I got out of this little deal pretty cheaply.