I've been messing about building Pulsejets for a while now. Anybody else ever tried? All mine have been valveless 'chinese' style varying in size from a jam jar to the five footer i'm building now. But i really would like to build a valved pulsejet, based on the Argus engine which powered the V1 flying bomb. Check out this site for some inspiration:
http://maddoxjets.com/
This guys been building them for a while now and seems to be able to support himself on it aswell. Respect due, i feel. Certainly look very professionally built.





