I have a 1971 CB500 with many rust spots all along the frame.
Can anyone suggest a good method for rust removal from a frame?
Sand blast and use phosphoric acid then rinse. Paint with in 4 hours. OR just powdercoat it.
It will get sand blasted before powdercoat.
The better places give it a phosphate dip to.
Phosphoric acid turns the iron oxide(rust) into iron phosphate.
It stops the rusting process.