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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.

Crushing sleeve help

Members post instructions to construct water rockets, launchers, deployment systems, staging mechanisms, splicing bottles, and payloads.
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Hamby77
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Crushing sleeve help

Post by Hamby77 » Sun Oct 18, 2015 6:16 am

I'm just wondering if anyone here has ever built a crushing sleeve and what you used for materials I'm having a hard time finding a rigid tube to use and a flexible tube. I've checked out the only tutorial I could find mentioned on here but it doesn't say what materials to use specifically or where to find them. I live a long ways from a big city with any good stores. So I need stuff easily found around the house, like using an ink pen for the rigid tubing part. I have the threaded lamp rod and nuts but not much else. Any help and ideas would be great. Thanks.



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Alien Space Agency
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Re: Crushing sleeve help

Post by Alien Space Agency » Thu Nov 19, 2015 7:17 pm

I do have an idea, but I haven't made one. For the nozzle part, you could use the cap from dish liquid containers, the ones with plungers (i don't know the name of those type of caps) then you could epoxy a washer on the ink pen to keep it aligned and to prevent it from being forced out the cap. For the stager, well, I don't know. This design eliminates the need to use a TLR which is a metal component.


Nothing can stop a curious mind from inventing- Anonymous

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Alien Space Agency
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Re: Crushing sleeve help

Post by Alien Space Agency » Tue Jan 26, 2016 9:48 pm

So I did make my own CS. My sleeve was made of 8mm heatshrink and my pen tube is 7mm diameter. Now you know how I fitted it, probably. It stages in a 30 psi difference. I glued both components to their respective caps with CA glue (yes, super glue).


Nothing can stop a curious mind from inventing- Anonymous

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