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?

there are a number of chemicals that will do it, but unfortunately,
there are a sub-set of them which will give you a risk of hydrogen
cracking. best to just oil and ride. or replace. not much point
spending $6 on chemicals and 1 hour of time [not to mention container
clean-up and chemical disposal] on something that can be replaced for $8
and 10 minutes.