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Brian Reynolds <BReynolds6@socal.rr.com> writes:
>
> 2) How strong is the air pressure? How much weight can a
> single cylinder move at full pressure?
By highly scientific methods [1] I got ~54N,
beyond that the cylinder starts leaking.
With a diameter of the piston of 13mm that gives
54N/(pi*0.0065mm^2)=406833.94 Pa ~ 4 times atmospheric pressure.
That is rather new transparent cylinder from UBS (3800),
pumped to maximum with a big yellow pump.
> 3) I have two cylinders
> (http://www.bricklink.com/catalogItem.asp?P=2793c01) but one
> is brand new while the other one is used and the used one
> takes longer to slide in and out than the new one. The used
> one has some sort of gunk on the tube that appears to be
> causing extra friction where the new cylinder doesn't.
LEGO apparently puts some grease in the cylinder, in the clear one
it is visible. That moves around with every move of the cylinder.
Jürgen
[1] Stacking books on a piston and then weighing them.
--
Jürgen Stuber <stuber@loria.fr>
http://www.loria.fr/~stuber/
> rot 13 "fr"
"se"
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Message has 1 Reply:
 | | Re: Lego pneumatic systems overview?
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| (...) That's good news. My interest is in building full-built models and not the technic see-through style efforts that I usually see the pneumatics used on so it'll be important that the cylinders are capable of moving the combined weight of the (...) (21 years ago, 25-Sep-03, to lugnet.technic)
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Message is in Reply To:
| | Lego pneumatic systems overview?
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| Hey there folks, recently my eyes were opened to the mechanical possibilities that the Lego pneumatic systems allowed and today I received my Bricklink order for a couple pumps, pistons, switches, airtanks, and tubes and have been happily testing (...) (21 years ago, 23-Sep-03, to lugnet.org.us.lugola, lugnet.technic)
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