Subject:
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Re: Pneumatic Tanks
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Newsgroups:
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lugnet.robotics
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Date:
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Wed, 6 Jan 1999 20:25:09 GMT
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Original-From:
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Janet and Carl McIver <jncmcivr@gte.net+Spamcake+>
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Viewed:
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977 times
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I've been lurking in on this one for awhile, but wanted to let you all
know that PET soda bottles can hold 75-100 PSI no problem. The main issue
for those in the water rocket and spud gun hobby is the joints of your
homemade fittings, that they hold the pressure. You can find more by doing
internet searches for these two hobbies.
The point is that it is unlikely you will blow up the bottle!
-----Original Message-----
From: Linc Smith <lugnet.robotics@lugnet.com>
To: lego-robotics@crynwr.com <lego-robotics@crynwr.com>
Date: Wednesday, January 06, 1999 8:28 AM
Subject: Re: Pneumatic Tanks
> Fredrik Glöckner wrote in message ...
> > This is a nice idea. One thought, though, is it really necessary to
> > have two holes? I would think that one hole is enough if one use a T
> > junction like this:
> >
> >
> > air tank
> > ___
> > (___)
> > |
> > compressor---+---application
> >
> > Or will this setup halt the air flow? (Halting the air flow may be a
> > good idea, BTW, as I find that when using an air tank, I have almost no
> > fine control of the cylinders.) What do you think?
>
>
> Your idea is great and would work quite well. In one of my applications I
> am finding that Just a long hose is working as a reservoir of pressured • air.
> I Like your idea because you have simplified the setup... good work! As to
> the loss of fine adjustment in small cylinders... have a look at this old
> post... I detailed a method of installing a flow limiter inline. This
> slowed the flow of air, and thus the actuation of the cylinder. Some times
> this is necessary if you are running large cylinders under strong forces,
> and small ones under light forces (all on the same tank/compressor). The
> cylinder force is not hindered, just the speed of actuation.
>
> http://www.lugnet.com/news/display.cgi?lugnet.build:245
>
> LINC
> --
--
Did you check the web site first?: http://www.crynwr.com/lego-robotics
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Message has 2 Replies:
 | | Re: Pneumatic Tanks{now off topic}
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| (...) I'm on a water rocket list and one of the members mailed me a video of his rockets. He got a 20oz Sprite bottle up to 200psi without blowing! the release mechanism failed. Shane Weston -- Did you check the web site first?: (URL) (26 years ago, 6-Jan-99, to lugnet.robotics)
| | | Re: Pneumatic Tanks
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| Janet and Carl McIver wrote (...) First, thanks for the info on the capacity of a pop bottle. Second, "water rocket and spud gun hobby" ?!? You learn something every day. Third, there are _two_ people who are involved in this hobby lurking on this (...) (26 years ago, 6-Jan-99, to lugnet.robotics)
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