• Launcher for Air Rockets and Corks, Using a Garden Hose

    Looks great, like your solution with the rope pull on the lever. About to do the same for a Messy Church group. What dia pipe did you use for the riser? From the photo it looks like a nice fit with the bottle. I was going to use 15mm dia pipe but worried that it might not work so well as it results in a gap between the pipe and the bottle.... which will reduce thrust.

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