Oxalic acid bath before and afters

I have not tried this myself, but the photos are amazing.

Cabers (Classic Anqtique Bicycle Exchange) find a lot of antique bikes with lots of rust, much more so than C & V. and they seem to have taken rust removal to an art.

I have used 0000 steel wool and Barkeepers Friend (main ingredient Oxalyic Acid) with excellent results on chrome whees but wouldn't recommend this method on painted surfaces.