Compressed Air Rocket Launcher

This is a weekend project we did from Make magazine. Here's the link:
http://blog.makezine.com/archive/2009...

• Category

  Science & Technology

[Hunter Grimes]

Yes its cheap and the sprinkler valves are only 9 bucks at menards and u don't need 25 volts me and my dad found out you of need 6 volts to release the sprinkler valve just 24 is the most it will take

[Craig Gates]

Finding out the voltage range to open the valve was good engineering work!

[austinbeedy]

so, im makeing the same thing and i was wondering if you modified the valve any.

[Craig Gates]

Hi, there were no modifications made to the valve. It's a simple irrigation valve you can pick up at a home improvement (DIY) or plumbing store. The only thing we had to do it connect it to a battery. We used the battery from a power tool. Just be sure not to cross the leads of the battery.

[Riverfrogg den danske frø]

pik unge

[Hunter Grimes]

Dude I made allmost the same thing you are using a water sprinkler valve right u hook it up to a battery and them it releases the air real quick they work great and it's way cheaper than having to buy estes rocket motors for 8 bucks for 2 motors it's cheap entertainment and the sprinkler valves work great sometimes if u don't hold the button down for a couple Secounds it makes a weird sound and air come

Out but I have mine hooked up to an air compressed but a bike pump works good to as long as

[olav666pwnd]

lol

[Craig Gates]

Thanks. We are very fortunate.

[bankai5664]

oh dude this was amazing good job dude! and btw the place is TERRFIFIC im jealous of you that you are living in this peacefull and beautiful neibghourhood! Very Good Vid! 5/5

[Malignus68]

Amazing!!