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In lugnet.technic, Tobbe Arnesson writes:
> How about telescopic? (how do they retract those IRL?).
In lugnet.technic, Tobbe Arnesson writes:
> How about telescopic? (how do they retract those IRL?).
Opening the valve releases the oil and whatever force is pressing on the
piston forces the oil out and back into the resovoir.
The old pnumatic system worked by pumping the air out of the cylinder.
Nature abhors a vacumn.
When the air pressure outside of the cylinder is greater than that inside
the cylinder the air pressure push's the piston back in (allowing for
friction and a few other factors).
Could you ever fully evacuate a vessel (of fixed volume) of air without
replacing it with something else?
Steve
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Message has 1 Reply:
 | | Re: Custom Pneumatic Parts
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| (...) So there is no system to "suck" it back in apart from ol' gravity? True they are almost always used to tip lorry beds and rise elevators and such. (...) I know, I'm actually old enough to own a few of them :) Thanks! Best regards, /Tobbe (URL) (...) (21 years ago, 13-May-03, to lugnet.technic, lugnet.robotics)
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Message is in Reply To:
| | Re: Custom Pneumatic Parts
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| (...) Hm... If one could find a tube of the same diameter it would be easy to cut the original cylinders and insert some extra length. The stroke would still be limited so the piston needs lenghtening too, that might be harder with the new versions (...) (21 years ago, 13-May-03, to lugnet.technic)
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