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Dynajet Pulsejet Engine

After researching a number of pulsejet projects and coming to the conclusion that the designs areeither lacking or just does not work, it appears that building a pulsejet based on the Dynajet enginehe best of all worlds. The commercial Dynajet is expensive and all that is needed was a piece of

metal 2.25" long. The same thing with the tubing for the tailpipe. The aluminum or blue steel tomachine the valve head is only about $10 which is big enough to make 3 valve heads. A piece of 2.

D black steel pipe is needed to make the combustion chamber for $8-$10, for the tail pipe one canuse a steel tube from an old bike or other source. For the junction between the combustion chambeand tail pipe a stainless steel measuring cup or something of similar size will work. Use a mig or arwelder to put it all together.

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Above is the valve head drilled out and turned down to the propershape.