2 Liter Bottle Launcher

2 Liter Bottle Launcher

Ryan Bavetta
aka Bavetta
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By bavetta

2 ratings

- Video 1 -

A few pvc pipe fittings and an air compressor that fires 2 liter bottles sky high.

I made this simple pvc pipe setup based off of a MUCH more complicated and fragile design that I had seen a long time ago in middle school. The thing that makes this device work is the great fit between the 1/2 inch pvc pipe and the neck of the 2 liter bottle. Also, the 1/4 inch air compressor quick disconnect fitting fed to the 1/4 inch to 1/2 inch pipe threaded pvc fitting makes it easy to disconnect and save for later use (I still have it in drawer for easy access).

It works like this: Fill the bottle up with water about one third of the way up. Set the air compressor to a pressure which you think is reasonable (high pressure = greater risk of explosion and injury). Put the bottle on the launcher and hold it tight against the rubber seal on the bottom. One person opens the valve to the air compressor until the person holding the bottle on the launcher can not hold onto the bottle any longer, and it shoots to the sky. Pretty simple, but a lot of fun.

By potter	2006-03-23 14:36:52
you know the other thing that works for this is the valve stem out of a truck rim, i used to use 2 liter bottle as rocket as a kid. the valve stem wedges into the bottle perfict the all you need is a bike pump or an air compressor to attatch to the valve

By trebuchet03	2006-04-04 23:24:41
I tried a 2" valve stem -- it did not work for me... but its possible that the design has changed.... It fit through the hole perfectly :P -- Is that curved piece at the bottom of the launch pad just some rubber to seal off the bottle? I thought I had an O-ring that would fit... but I was wrong :P I'm going to adapt the cannon I just posted to see if I can pressurize/launch at the same time....

By simonmic001	2006-12-29 20:24:52
no that ruber peice is to hold the botle with so you have more grip