It doesn't matter how frequently you remember to keep your bike chain lubricated; rust is bound to attack sometime. To fix it quick all you'll need is a bit of steel wool and some lime juice.
Whether you have an old bike in the garage that needs to go on Craigslist, or you just picked something up secondhand, this is a great trick for all things vintage in need of a facelift. The water on trails and streets often causes rust, but help is just one squirt away.
The acid in lime juice works fast to cut through rust with the help of the abrasive steel wool pad. There's no magic to this trick, it's just simple science. Just make sure to rinse any remaining juice off your bike, and then dry it.
• Read More: Remove Rust From A Bicycle With Lime Juice from Instructables