I remember a 1970's? conversation with my dad about putting an "air-up" system in Springfield. The long drags were taking a long time to get up brake pressure from the locomotives alone and pop was wanting a solution. The drilling rigs I was working on at the time used these monster Sullair 400 hp air pumps and I figured something like that could do the trick if you gave it a big enough receiver to get ahead at the onset. This vessel looks like the right stuff.