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A water rocket is a type of model rocket using water as its reaction mass. The pressure vessel (the engine of the rocket) is constructed from thin plastic or other non metallic materials (usually a used plastic soft drink bottle) weighing 1,500 grams or less. The water is forced out by compressed air. It is an example of Newton's third law of motion.

Gardena Launcher

Discussion about Compressors, hose, pipes, fittings, launchers, release mechanisms, and launch tubes.
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PetitSioux
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Joined: Mon Sep 23, 2013 10:43 am

Gardena Launcher

Post by PetitSioux » Sun Oct 13, 2013 4:10 am

Hello everyone !
I ask myself a question : is that normal that when I put the rocket on a gardena connector the water go into the pipe to my pump ( and sometimes into my pump ...) ?
Thanks for all your answer, I hope that I can solve this problem ..
PetitSioux



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Jamie5335
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Re: Gardena Launcher

Post by Jamie5335 » Sun Oct 13, 2013 6:41 am

Hello There,

Yes this can be an issue with many launchers, and I use a Gardena Launcher and water does flow back down the hose....

A way to solve this is to put a simple Non-Return valve into the launcher.

Some expensive compressors come with Check Valves which is another way of saying Non return Valve and this is what I am currently investigating.

However if you are using a simple Gardena Launcher you can incorporate this simple yet clever system which allows you to abort a launch and has a inbuilt Non return valve, here is the link:


Hope that helps!

Jamie B
JSB Rocketry


JSB Rocketry
Website: www.jsbrocketry.webs.com
Youtube: https://www.youtube.com/channel/UCczlD-uBjlYdJyBFEfuCEbg/feed

Jamie Bignell,
jamie.s.bignell@gmail.com
Somerset UK

"The important thing is to know how to take all things quietly" -Michael Faraday.

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Jamie5335
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Joined: Sun Jun 02, 2013 1:15 pm

Re: Gardena Launcher

Post by Jamie5335 » Sun Oct 13, 2013 6:50 am

Sorry that link is faulty, here it is!


JSB Rocketry
Website: www.jsbrocketry.webs.com
Youtube: https://www.youtube.com/channel/UCczlD-uBjlYdJyBFEfuCEbg/feed

Jamie Bignell,
jamie.s.bignell@gmail.com
Somerset UK

"The important thing is to know how to take all things quietly" -Michael Faraday.

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PetitSioux
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Joined: Mon Sep 23, 2013 10:43 am

Re: Gardena Launcher

Post by PetitSioux » Sun Oct 13, 2013 1:40 pm

Thanks for your help, I'll try this option this week !



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U.S. Water Rockets1
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Joined: Sat Feb 03, 2007 3:24 pm

Re: Gardena Launcher

Post by U.S. Water Rockets1 » Sun Oct 20, 2013 12:41 am

PetitSioux wrote:Hello everyone !
I ask myself a question : is that normal that when I put the rocket on a gardena connector the water go into the pipe to my pump ( and sometimes into my pump ...) ?
Thanks for all your answer, I hope that I can solve this problem ..
PetitSioux
You could fix this a few ways.

You can raise your pump high above the water level in the rocket.

You can add a launch tube or even a piece of flexible hose to the gardena to raise the air inlet level to a point higher inside the water rocket that is higher than the water line.

You could construct a full-bore launcher with a PVC launch tube and o-ring seal like this: http://www.uswaterrockets.com/construct ... torial.htm


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