Spinning pop-pop boat - GIF

Spinning pop-pop boat.

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Previously:

https://www.homemadetools.net/forum/...923#post171576
https://www.homemadetools.net/forum/...548#post170222
https://www.homemadetools.net/forum/...670#post136574
https://www.homemadetools.net/forum/...906#post171516
https://www.homemadetools.net/forum/...420#post127358

So - will only run for a moment or two? Or is it like a pulse jet, and after exhaust, sucks in some fluid?

Forrest

From what I found (youtube.com/watch?v=VcZxYAALLAE)
one side is intake, the other is power/exhaust with no valves.

Explanation: https://en.wikipedia.org/wiki/Pop_pop_boat

Ah - thanks for that -
The internal-combustion analog of the pop pop boat engine is the valveless pulse jet.