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Subject: 
Re: A better full adder!
Newsgroups: 
lugnet.technic, lugnet.robotics
Date: 
Tue, 1 Jul 2003 17:54:55 GMT
Viewed: 
2391 times
  
Brian H. Nielsen wrote:
   I've tested it, and it does work.  I don't know how many switches the
compressing piston can switch, but the force exerted seems capable enough.

I wasn't trying to imply that you hadn't actually tried it... I was only
suggesting that I didn't think that pistons being driven solely by the
compression of air created by the expanding of other pistons would be
strong enough to compress multiple others when there was a load on them
(you gave no mention of load testing).   As both yourself and another
respondent pointed out, I see now that the only piston that actually
*needs* to get compressed is the one that was formerly expanded, so I
can see now that as long as the loads aren't too heavy, it shouldn't
matter.  I was originally misunderstanding the idea you were getting at,
and I'm sorry if my questioning it caused any offense.

What I do find interesting is that the pressure produced by the
expansion of one piston probably would not normally be sufficient to
compress another piston where the combined load of both pistons is too
great to have otherwise been driven by a single piston.  Your idea of
connecting them while they are all retracted to create a slight bias to
that end is ingenious, IMO, and may go some lengths to overcoming that
limitation.   I'd be curious to know by how much.

>> Mark



Message has 1 Reply:
  Re: A better full adder!
 
(...) No offense was taken. My appologies if I gave that impression. I just completed some load testing on the compressing piston. It easily switched 2 switches, was just barely able to switch 3 switches, and clearly couldn't do 4 switches. Since (...) (21 years ago, 1-Jul-03, to lugnet.technic, lugnet.robotics)

Message is in Reply To:
  Re: A better full adder!
 
(...) I've alway found low level circuit design interesting. Using pneumatics and LEGO pieces to create them seems like a good challenge. I have some ideas that might turn into workable designs. (...) I've tested it, and it does work. I don't know (...) (21 years ago, 1-Jul-03, to lugnet.technic, lugnet.robotics)

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