On Jul 22, 1:28*pm, Ablang wrote:
What do people here do w/ bikes for other people to help them salvage
their bikes that may have been sitting outside just a little bit too
long and they don't want to spend the money on new sprockets & chains?

What types of chemicals will remove rust?

Steel wool soap pads clean up cogs pretty nicely. I don't mess with
rusty chains, as they're cheap enough to replace. The chains from
*mart work well enough on 7 speed bikes and cost $10. You can get KMC
chains or rebranded KMC chains online from Nashbar for 8 speed that
are excellent, also for $10, often sold two to a box as "tandem"
chains--you can use them for 5/6/7 or eight speed clusters.