bp71k5
3/4 ton status
Wait you can fill a tire up with CO2? Well that seems like a much cheaper and simpler way than my frankenstien creation.
You can use co2 to fill tires. Compressed air is practically free, but co2 isn't. The paintball place charged me ~$40 for my 10lb powertank. The co2 lasts a lot longer than air though. The beverage place is a bit cheaper. But at least they refill your tank. There's some welding shops that will exchange your empty co2 cylinder for a full one if you don't mind exchanging cylinders.
-Brian