IIRC, the largest single phase motor you can run on 240v is 10 hp. If you can't/don't want to go that route, a 16 hp horizontal shaft gasoline engine is in the ~ $400 range. So depending on how much hp you need, you have options.
What I was going to suggest. I’ve seen a few that will really put out the air on the tire changing trucks for BIG equipment vehicles, busses tractors and the like.
