It depends upon where the rust is located. Naval jelly and other corrosives work well, but you need to be able to neutralise them to stop them from eating good metal. I might try it on a boat or body panel on a car, but not on something like the chain of a bicycle or motorcycle. The naval jelly would be difficult to completely rinse off the chain.
The Majesty has primarily aluminum, so I don't think you'll find much rust.
The Majesty has primarily aluminum, so I don't think you'll find much rust.