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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.

Stage 1 launcher

Discussion about Compressors, hose, pipes, fittings, launchers, release mechanisms, and launch tubes.
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Graveyard
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Stage 1 launcher

Post by Graveyard » Tue Sep 23, 2008 5:49 pm

Here's some photos of My 1st launcher...
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Tim Chen
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Re: Stage 1 launcher

Post by Tim Chen » Wed Sep 24, 2008 11:31 am

Another work of art! 8)

I like how the gauge says "Danger" in red. Did it come like that or did you print that somehow?


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Cloud Dancers
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Re: Stage 1 launcher

Post by Cloud Dancers » Wed Sep 24, 2008 12:09 pm

WOW!!! :shock:

That is one impressive launcher.

As a matter of fact it is probably the best launcher I have seen.


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Graveyard
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Re: Stage 1 launcher

Post by Graveyard » Thu Sep 25, 2008 5:03 pm

Nah....it came that way...lol I like to run with scissors too! 8)



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Mark Chen
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Re: Stage 1 launcher

Post by Mark Chen » Fri Sep 26, 2008 10:09 am

Tim Chen wrote:Another work of art! 8)

I like how the gauge says "Danger" in red. Did it come like that or did you print that somehow?
Tim, I just looked at our gauges and there is a metal ring holding the glass in. We could print a sticker and put it over the face of the gauge if we want. I think I can get access to a color laser printer to make some stickers with. If we use our printer the ink will blur and run if it gets wet. Inkjet prints do that.


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Tim Chen
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Re: Stage 1 launcher

Post by Tim Chen » Fri Sep 26, 2008 3:11 pm

Mark Chen wrote:
Tim Chen wrote:Another work of art! 8)

I like how the gauge says "Danger" in red. Did it come like that or did you print that somehow?
Tim, I just looked at our gauges and there is a metal ring holding the glass in. We could print a sticker and put it over the face of the gauge if we want. I think I can get access to a color laser printer to make some stickers with. If we use our printer the ink will blur and run if it gets wet. Inkjet prints do that.
Good work Mark! I like the concept!


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Graveyard
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Re: Stage 1 launcher

Post by Graveyard » Fri Sep 26, 2008 4:38 pm

Hey Guys, That gauge came from a NAPA automotive store. Located with the air accessories. It's all plastic, not really a high quality component.

Later 8)



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U.S. Water Rockets1
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Re: Stage 1 launcher

Post by U.S. Water Rockets1 » Sat Sep 27, 2008 10:30 pm

Graveyard wrote:Hey Guys, That gauge came from a NAPA automotive store. Located with the air accessories. It's all plastic, not really a high quality component.

Later 8)
Hello Graveyard,
Where did you obtain the metal hose connection? It looks like a Schrader valve tire pump or compressor would connect to that inlet. Many people would be interested in an off-the-shelf solution to pump connection.


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Graveyard
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Re: Stage 1 launcher

Post by Graveyard » Sun Sep 28, 2008 10:05 pm

Hey, The schrader valve came from NAPA also. They usually have a spinning rack that has gauges, stems, tire tools...etc.
The tee and brass nipples came from a True Value store...plumbing dept.

Later



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Re: Stage 1 launcher

Post by Cloud Dancers » Mon Sep 29, 2008 12:11 pm

I have seen some of those tire valves that are designed for mag wheels that attach to the wheel with threads. Has anyone else seen these and if so what kind of threads do they use? Are the threads compatible with common pipe threads or at the very least are there adaptors that could be used


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Graveyard
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Re: Stage 1 launcher

Post by Graveyard » Mon Sep 29, 2008 5:16 pm

If the ones Your talking about have rubber washers and thin locknuts they will be straight threads and probably not the same pitch as a pipe thread. A 1/8" npt is 27 threads per inch. I'll give ya another really good vendor that might help quite a bit.

http://www.mcmaster.com/

They a little of everything. Fittings, materials, fasteners....etc.
Later Guys



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Re: Stage 1 launcher

Post by Cloud Dancers » Mon Sep 29, 2008 9:10 pm

Graveyard wrote:If the ones Your talking about have rubber washers and thin locknuts they will be straight threads and probably not the same pitch as a pipe thread. A 1/8" npt is 27 threads per inch. I'll give ya another really good vendor that might help quite a bit.

http://www.mcmaster.com/

They a little of everything. Fittings, materials, fasteners....etc.
Later Guys
Thanks for the link Graveyard,

That site is a great source for hardware. I should be able to adapt this tire valve to fit to 1/2 inch steel pipe that is part of my launcher.

This is one of the great things about this forum. There is always someone with an answer to my questions.

Have a good day :)


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Tim Chen
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Re: Stage 1 launcher

Post by Tim Chen » Tue Sep 30, 2008 12:17 pm

Graveyard wrote:Hey, The schrader valve came from NAPA also. They usually have a spinning rack that has gauges, stems, tire tools...etc.
The tee and brass nipples came from a True Value store...plumbing dept.

Later
I can use one of them scheader valves myself! Thanks! You're a wealth of information!


Tim Chen
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