Valveless Thermojet Pulse Jet Engine

This Engine was purchased on Ebay. I modified the Injectors to a smaller size and increased the flare of the tailpipe. The engine is started with a torch to the intake as the propane is turned on. Once the engine is rumbling the propane is turned up slightly (a sweet spot is present) and the engine will start to pulse. If the propame is turned up too far (past the “sweet spot“) a shot of air in the intake will start it.