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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.

Hand pump w/50' hose?

Discussion about Compressors, hose, pipes, fittings, launchers, release mechanisms, and launch tubes.
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bugwubber
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Re: Hand pump w/50' hose?

Post by bugwubber » Thu Nov 26, 2015 3:54 pm

110 is not HP. That's the high end of low pressure.
All tubing carries a psi rating that you need to pay attention to. Most small dia tubing I've seen will not have an issue with 110.


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Re: Hand pump w/50' hose?

Post by Alien Space Agency » Mon Nov 30, 2015 8:25 am

1 liter, 2 liter... HOW ABOUT A 12 LITER ROCKET?! Same config as my last post, how many pumps do you think it will take to pressurise the whole thing to 100 psi?

By the way, the pump is a 1.1" diameter 14" length pump. With an air diffuser (if that is what its called- the second chamber that dissipates the heat produced by compression. Also the gauge is located there)


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Re: Hand pump w/50' hose?

Post by bugwubber » Mon Nov 30, 2015 12:19 pm

air compressor will be your friend. or bottled air. I have seen multiple people manually pumping a large rocket, but just one, well you'd need to multiply your number of strokes for a 2 liter by 6 to get an estimate.


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Re: Hand pump w/50' hose?

Post by Alien Space Agency » Wed Dec 02, 2015 7:20 am

Well I don't use 2L bottles that much... but I use 1.5L though. Let's see...


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Re: Hand pump w/50' hose?

Post by addstogether2 » Fri Nov 25, 2016 6:53 pm

Masters here in Aus had a plastic water air line hose 1/4" and 1/8" thats burst rated to 1000psi and working prussure of 250psi.
They are closing down so I bought 60m plus fittings. I haven't tested it yet, will keep you informed when I do.


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