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Gasoline Powered Soda Bottle Rocket Launcher. Designed & Tested By C.L.Raub

Step 1917

17
Cut the copper tubing about ½ " longer than the 1/2 " plastic pipe, about 12.5 "
You can solder a barb fitting on the copper pipe for the hose, but keep the length at 12.5 "
Solder the igniter end closed (refer to chart 2). Put a small pin hole in the copper tubing right below the solder.
The black mark is how far the fuel line comes up in the copper air line.
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