Fahr, DISCLAIMER I know someone will think this is a bad idea DISCLAIMER/
I have a couple of old 5 gallon propane bottles that I unscrewed the valves out of and installed a ball valve and pneumatic coupler onto. Charge from the air compressor and then use to air up tires. I learned this trick from another bolter here in Washington. Haven't blown one up yet - even at 125 psi charge pressure.
Ken
