Subject:
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Re: Random Pneumatic idea/question
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Newsgroups:
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lugnet.technic
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Date:
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Mon, 21 Nov 2005 03:09:35 GMT
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Viewed:
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4485 times
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In lugnet.technic, Billy Bauman wrote:
> In lugnet.technic, Billy Bauman wrote:
> > In lugnet.technic, Kevin L. Clague wrote:
> > > In lugnet.technic, Billy Bauman wrote:
> > > >
> > > > Speaking of liquids, Is it possible to replace the air in the pneumatic system
> > > > to make a hydraulic system. I mean by using something like, oh say, 10 WT
> > > > silicone oil?
> > > >
> > > > http://www2.towerhobbies.com/cgi-bin/wti0001p?&I=LX3297&P=7
> > > >
> > > > I guess not since you can't complete the circuit because of the inability to
> > > > access the exhaust port on the valves or the intake on the pumps.
> > >
> > > Yes, the fourth port is an issue. It is possible to hook multiple switches to
> > > give you access to the fourth port though.
> >
> > Is it now? Hmmmmmm. How would one go about hooking these switches to access
> > the
> > fourth port? Is there a website that I can visit that would give a good
> > explanation to this?
> >
> > With thanks,
> > Billy.
>
> An interesting thing has happened. after asking about how one sets up the
> switches to access the fourth port, I decided to sit down and figure out how to
> do it myself. Initial progress was slow and I don't have any pictures of it,
> however, I was able to figure out how to do it. Afterwards, I went on the posts
> to see if anything came up, and I found this.
> http://news.lugnet.com/technic/?n=14861
> Turns out that my findings were similar to Kevin's schematic. Like his, I
> used 4 Switches, and 4 T pieces. In order to pump the fluid in the system
> without loosing or adding any fluid, I decided to use a pneumatic ram as my
> pump, by using the two ports on the cylinder as the intake and output. When two
> of the switches are open and two are closed, and I push the ram, the fluid in
> the system cycles through in a clockwise direction. The problem comes in, that
> if I pull the ram back up, it draws the fluid back through the system in a
> counterclockwise direction. So the valves are set up such that when I close the
> first two valves, and I open the second two valves, the connections of the
> ram/pump are essentially reversed, and thus pulling the ram pushes the fluid
> through the system in a clockwise direction while also containing the fluid in
> the system and without letting any extra fluid in, which is the key, I believe
> to hydraulics. The really strange things is that, having figured out how this
> works, I'm amazed at how simple it actually is.
> I assume then, that the load on the system would work in much the same manner,
> as a way of keeping the fluid in the system while also reversing the direction
> of the system. (That is, reversing the direction of the load, wile maintaing the
> constand direction of the main system.)
> The main reason for the post is that, having constructed the system, it
> appears to be valid, however, I wouldn't mind having a confirmation on my
> findings.
>
> Sorry if I'm a bother,
> Billy.
What makes you think you are a bother! I'm having fun!
I beleive that the four switch/four T solution is what you need to create a
hydraulic motor.
The pressure+vaccume engine I posted earlier today could just as easily be a
hydraulic motor, because it is a completely closed system.
I came up with a single piston, four port switch hydraulic pump today too!
Push the piston to one extreme, flip the switch, push the piston the other way,
flip the switch...... repeat.
Yup, hydraulics are quite possible. Good work!
I just got two of the four-port combo switches finished, so I can start on the
pressure+vaccume engine.
Keep up the good work!
Kev
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Message has 2 Replies:
 | | Re: Random Pneumatic idea/question
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| (...) That's the whole purpose! Methinks we'll be needing a lugnet.pneumatics and maybe a lugnet.hydraulics or a combined lugnet.fluidics, pretty soon. What say, fellas? CS (19 years ago, 21-Nov-05, to lugnet.technic)
| | | Re: Random Pneumatic idea/question
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| (...) That IS odd! And thank you for the reassurance. I have just completed attaching a load to the pump. Basically I just copied my pump and used it as my load. Using the pupm and alternating the valves and strokes, the load ram moved outward as (...) (19 years ago, 21-Nov-05, to lugnet.technic)
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Message is in Reply To:
| | Re: Random Pneumatic idea/question
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| (...) An interesting thing has happened. after asking about how one sets up the switches to access the fourth port, I decided to sit down and figure out how to do it myself. Initial progress was slow and I don't have any pictures of it, however, I (...) (19 years ago, 21-Nov-05, to lugnet.technic)
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