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Instead of pushing a pneumatic switch back and forth, you can use the old
non-return valve:
http://w3.one.net/~hughesj/technica/registry/pneumatic/pneu_3.html
connect the pump to the middle hole, connect the air tank to the left hole and
leave the right hole free.
The old style pump will pull air out of the tank and the pushed air will go
out the free hole.
- David
In lugnet.robotics, Jared Schmitz writes:
> you can store the vacuum in the LEGO tank or any other tank for that matter,
> but the technic pumps will not work for this unless you do a bit of work to
> figure this out: if you hook an old style pump straight to a valve (dont
> know which pin but i think it is the center) and then flip the valve one way
> so that whenyuo pull up on the pump it will suck the air out of the tank
> (yea I know it's a run-on sentance) then flip the valve so the air blowing
> in goes out the unused pin! in this way you can suck all the air out of the
> tank you want, although it would probably be better to use a non-LEGO pump
> that has just suction.
>
> Did anyone get that?
>
> cuz' I bareley did :)
>
> Jared
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Message has 1 Reply:
 | | Re: Home-made One-way valve
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| Alternativeley you can continue using the valve with the old style pump and have an air tank (if you own two) on each side i.e. one that holds the vaccum and one that holds the pressureized air. but... theres still the problem of flipping the valve (...) (23 years ago, 19-Dec-01, to lugnet.robotics, lugnet.technic, lugnet.build)
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Message is in Reply To:
| | Re: Home-made One-way valve
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| (...) you can store the vacuum in the LEGO tank or any other tank for that matter, but the technic pumps will not work for this unless you do a bit of work to figure this out: if you hook an old style pump straight to a valve (dont know which pin (...) (23 years ago, 18-Dec-01, to lugnet.robotics, lugnet.technic, lugnet.build)
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