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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Sun, 19 Sep 1999 23:52:53 GMT
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Viewed:
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693 times
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In lugnet.build, Fredrik Glöckner writes:
> "Tobias Möller" <tobias.moller@telia.com> writes:
> Don't you loose all precise control with the air tank? My experience
> with using the air tanks is that when you flip the switch, the cylinders
> go _smack_ to the extreme position at once.
>
> Fredrik
Hi Fredrik,
That lack of control of the cylinders has been my experience too. You really
have to barely open the valve to be able to stop in partially extended
movement. I wonder if you designed a cam that would squish the tubing past the
valve, maybe using gearing so the movement of the cam would be very slow, then
you might gain the finer control of the movement of the cylinders. the valve
would then become the "on /off" and the cam section adjusting the available
pressure .
Take care : )
John
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Message has 2 Replies:
 | | Re: Using airtanks on 8868
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| John Morgan wrote in message ... (...) really (...) the (...) then (...) valve (...) I have thought of using different valves. If one could use a valve based upon pressure (slower pressure increases). This would allow a slower response to the (...) (25 years ago, 20-Sep-99, to lugnet.build)
| | | Re: Using airtanks on 8868
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| Hydraulic and pneumatic systems work differently. In the first one, your working fluid is an incompressible one (liquid oil, generally) so you have the full control of the stroke length of any piston.But in the case of pneumatics, the working fluid (...) (25 years ago, 20-Sep-99, to lugnet.build)
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Message is in Reply To:
| | Re: Using airtanks on 8868
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| (...) Don't you loose all precise control with the air tank? My experience with using the air tanks is that when you flip the switch, the cylinders go _smack_ to the extreme position at once. Fredrik (25 years ago, 19-Sep-99, to lugnet.build)
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