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DIY Launcher Assembly Instructions Part 1. Items needed to launch soda bottle (rocket): Please read through assembly instructions carefully to avoid Plastic (PET*) soda pop bottle, water, air source (bicycle pump, foot pump, building a botched launcher or causing injury to end-user.
• Fill bottle with 1 liter of water. • Slide bottle down onto launch tube. • Lock bottle in place with ¾” coupler. • Slide string under the cross bar in the base, weigh it down with tent pegs or rocks • Attach bike pump to valve • Pump air into the bottle until you reach 40PSI. • Detach bike pump.
The kids had a lot of fun attaching craft foam fins onto the bottles with duct tape and hot glue. The launchers themselves only take about 20 minutes to put together, so it's a quick and easy project that offers a ton of entertainment.
This is a water rocket launcher system that: assembles in minutes from snap-fit 3D printed parts without glue; is globally-compatible with all soda bottles; is one-hand portable; is PVC-pipe optional; costs less than $10 USD for materials; 3D models and latest updates are at Printables.
There are reports on the web of soda-bottle rockets exploding, but these reports refer to a different launcher design, where the bottle is locked to the launcher. The friction-fit launcher
A plastic (PET*) soda bottle, nose cone, water, and air source (bicycle pump, foot pump, scuba tank, or an air compressor). Soda bottle nose cone is required or rocket will not fly straight: Create the nose cone by starting a cut with a razor blade or box cutter about 4" down from the cap and just above the label of a plastic (PET*) soda bottle.
A simple soda bottle rocket launcher using coathanger wire, an inner tube, and a soda bottle.
