Hi,
One way of launching a bottle is to use the standard gardena hose-connector. The female part stays behind at launch: the male part is fixed to the mouth of the bottle. Somehow.
There is no easy way to fix the bottle to the gardena nozzle as the threads are not the same. So far I know of 2 methods:
1. Use a dremel to remove the thread from the bottle so that it becomes a crude push-fit into the gardena; graunch it in, use hot-glue and pray.
2. Use a custom-made connector which fits both threads perfectly. I did hear of such a thing, but have never been able to find one.
Recently, with the rise of 3D printing, I thought of making something suitable. However, writing the software to produce such a device is way beyond me.
How have other rocketeers dealt with this problem ( if at all )?
Does anyone know where one can obtain the magical dual connector ( if it really does exist )?
Has anyone ever 3D printed anything along these lines?
Bruce
Gardena fittings and coke-bottle thread
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Re: Gardena fittings and coke-bottle thread
Here's my take.
The strategy is to use a bottle cap for the threads, and reinforce the sides with polycarbonate florescent light tube cover. In this case, I took a homemade bottle coupler and used PLP8x to set a male/male gardena coupler. Inside view
The strategy is to use a bottle cap for the threads, and reinforce the sides with polycarbonate florescent light tube cover. In this case, I took a homemade bottle coupler and used PLP8x to set a male/male gardena coupler. Inside view
Bugwubber
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Re: Gardena fittings and coke-bottle thread
Bugwubber's method is the standard way to do it. But if you have a 3D printer, here is a article from USWR that shows how they are tackling this issue:
http://www.uswaterrockets.blogspot.com/ ... ocket.html
http://www.uswaterrockets.blogspot.com/ ... ocket.html
-Blenderite
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Check out my YouTube channel: https://www.youtube.com/c/Blenderite
"Get it right, then go for GREATNESS!"
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Re: Gardena fittings and coke-bottle thread
im looking of something like this but if I make 1 my parents will get mad I built my rocket at my friends
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Re: Gardena fittings and coke-bottle thread
Perhaps this is something you can do with your parents? NASA has an educational doc on water rockets they might find interesting.
https://www.nasa.gov/audience/foreducat ... ckets.html
https://www.nasa.gov/audience/foreducat ... ckets.html
Bugwubber
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Re: Gardena fittings and coke-bottle thread
yeah they arnt to scouty and like to dostuff like that I tried to get them to go to the Norfolk tides night,since I live in va beach,va and they said no they have stuff to do usualy so that is one reason I started water rocketry
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Re: Gardena fittings and coke-bottle thread
oh nvm I mis read I thought u have 2 go somewhere