Subject:
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Re: Using airtanks on 8868
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Newsgroups:
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lugnet.build
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Date:
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Mon, 20 Sep 1999 11:56:13 GMT
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Viewed:
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826 times
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well, I understand all this, re current LEGO valves with air tank yeilds an
"on or off" action with the cylinders. My concept was if we could build ( out
of LEGO) a better way of metering the air flow. Mechanical stops would be one
way of limiting the movement of the cylinders at a timed interval. I guess my
concept was if we could control short bursts of air flow with a technic cam
squeezing the air tubes, would we gain a little more control of the cylinders.
I am a novice and haven't tried this so I am sorry if this is inappropriate .
John
In lugnet.build, Fredrik Glöckner writes:
> "Selçuk <teyyareci>" <sgore@nospam.superonline.com> writes:
>
> > But in the case of pneumatics, the working fluid is a compressible
> > one (even compressed air) and you practically cannot control the
> > stroke of a piston, other than using mechanical constraints.
>
> Sure, but in the original configuration of 8868, you have more control,
> as you can turn the compressor on and off for short durations and yield
> relatively small changes in the stroke of the cylinder. Adding an air
> tank really makes this much worse, as you will have virtually no control
> at all when the pressure in the air tank is high. This was the point I
> wanted to make with my post.
>
> Linc Smith proposed to alter the T-joints so that they became much more
> narrow/tight. He used some parts from disposable syringes, I believe.
> This way, he could control the movement of the cylinders more precisely
> even when the pressure in the air tanks was high.
>
> Fredrik
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Message is in Reply To:
 | | Re: Using airtanks on 8868
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| (...) Sure, but in the original configuration of 8868, you have more control, as you can turn the compressor on and off for short durations and yield relatively small changes in the stroke of the cylinder. Adding an air tank really makes this much (...) (25 years ago, 20-Sep-99, to lugnet.build)
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