Am I right in thinking that the 1930s fuel tanks were tin plated? That’s the first part of my query. Last year I was chuffed to bits to get a completely original Clubman Special tank after a sixteen year search. It has the original paint although in a poor state. On the top it had cracked and was almost peeling up in lumps like so many British Rail sandwiches. BUT, the tank is completely rust free and where the paint has cracked it is bright shiny.(tin plate?). I decided to leave it as it was as i felt it’s a direct link to 1938. Unfortunately, since fitting to my bike, the deteriation of the paint has accelerated to the point where I will have to repaint it, sadly. So, how do I strip the old paint without taking off the tinning? There must be some experts out there.
Nitromors ain’t what it used to be, but as it is an organic solvent, and not an acid or alkali, in theory it shouldn’t harm a layer of tin plate. I think I would try it on a small area first, and see how it goes.