Minimum Air Compressor Size

Back in the early 70s when I was just getting out on my own. I bought a used two horse inline trailer. My dad, Pa as I called him, sanded it, primed it with red oxide primer, all there was ??.... and top coated it with single stage '69 F9 Dark Green Metallic He did it with a 5 hp Sear compressor with a tank that was what 10 gal. maybe?? It turned our perfect. I do know the primer was too thick, but it was flawless. He was a perfectionist. Drove me nuts!!!!!