I would like to share little a success story of a product I recently trialled called Rust Bucket.
After researching the product I was keen to try it out on a 1934 Swansea recently acquired from a fellow club member.
The process of chelation which targets only iron oxide (rust) is common some of the other rust removal remedies and products out there. What really intrigued me was that Rustbucket is a pH 7 (neutral) product which is supposed to prevent flash rusting of the surface of the newly cleaned metal associated with other rust removal methods. So essentially there is a fairly large window to apply your sealers or paint without the fear of instantaneous re-rusting.
The manufacturer recommends a ratio of 1 litre of Rust Bucket powder to 5 litres of water. I built a frame shaped bath from scrap timber lined with plastic sheet which had a capacity of 20 litres. I halved the recommended dosage partly to assuage my fear of paint and patina loss and bought 2 litres of powder. At $43 a bottle it also halved the budget!
After 12 hours in the solution the results were surprisingly good, simply hosing off with water and voila!; once dried the frame was ready for waxing. I noticed that the solution was really dirty, so it did a fantastic in removing any rust and flaky paint.
Rust Bucket, by Action Corrosion http://www.actioncorrosion.com.au/product/rust-bucket-safe-rust-removal-bath/