Hey Bish... You bring back alot of memories... When I was 15 (I think) yrs old I took some of my grass cutting money and bought a Badger 350, with a medium needle and it came with a can of air and an adapter . I never could get the air to last long enough, so I found an old inner tube and screwed on the adapter which would power the brush. LOL Paint would fly every which way at first, (too much pressure) then paint good for awhile, then just sputter and get splotchy as the pressure ran down! At that point I would just pump it up again with a hand pump! LOL...
Doug
PS... I still have that old 350, and from time to time get it out and use it!