Re: chain maintenance
I've heard that you shouldn't clean a chain with anything harsh like carb spray, brake cleaner, etc. because it will remove all the lube from the chain and unless you remove and soak it in oil you run the risk of running the rollers dry.
Most everything I've heard about chain cleaning is for MTBs but it should apply to any bike, just clean it with warm water and dish soap, dry and use spray lube. I remember seeing a chain cleaning system years ago that clamped over the rear derailleur, it even had brushes inside, you filled it with soap and water then just cranked the pedals for a while with the bike on a stand. The thing looked more gimmicky then anything.