Subject:
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Re: Pneumatic Magic Presetnation Maertials
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Newsgroups:
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lugnet.technic, lugnet.robotics
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Date:
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Mon, 18 Aug 2003 15:37:15 GMT
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Viewed:
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239 times
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In lugnet.technic, Lars Gjerløw Jørgensen wrote:
> Kevin L. Clague's utterance expressed in news:HJsMzo.4n3@lugnet.com:
>
> > In lugnet.technic, Ross Crawford wrote:
> >
> > <snip>
> >
> > > >
> > > > Less area, less force,,,,,
> > >
> > > Ummmm yep, thats what I meant - the contract side is smaller so less
> > > force, but wouldn't that also mean it contracts faster because it
> > > needs less air? Just like the small cylinders expand/contract much
> > > faster than the big ones because of the much smaller area?
> >
> > I think that the smaller pistons expand/contract faster because they
> > have much less friction, combined with the fact that they have much
> > smaller cavities. The old large single acting pistons expand/contract
> > much faster than the new large double acting pistons because they have
> > much less friction.
>
> Friction is an important factor. But just as important is the fact
> that if I want to fill a certain volume with air, it takes less
> time if the volume is smaller - therefore the pistons contract
> faster because of the shaft that takes up volume in that end. The
> pumps does deliver the same amount of air to all types of cylinders.
>
> This has to be tested with a stopwatch... :)
Yes. I've already acknowledged that they contract faster because of the smaller
volume in a no load situation.
>
> Play on..
Kevin
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Message has 1 Reply:
Message is in Reply To:
 | | Re: Pneumatic Magic Presetnation Maertials
|
| Kevin L. Clague's utterance expressed in news:HJsMzo.4n3@lugnet.com: (...) Friction is an important factor. But just as important is the fact that if I want to fill a certain volume with air, it takes less time if the volume is smaller - therefore (...) (21 years ago, 18-Aug-03, to lugnet.technic, lugnet.robotics)
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