1. Fuel
1. A pressure above 1 ATM (15psi) may not exist in the combustion chamber prior to ignition
2. Permitted Fuels consist of:
  • Hairspray
  • Ether (“Starter Fluid”)
  • Organic Fuels
  • Compressed Air

not sure if this would work with compressed air/gas guns... typically a firing chamber is pre-pressurized though a low volume, high pressure valve of some sort... and then the spud is fired by opening a large volume valve of some sort, usually a 1/4 turn ball valve..


or would a compressed air gun be exempt because it has neither a combustion chamber, nor ignition?