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I'm thinking that if you mount the tank vertically, and use the top hose for
air input - and then use the bottom hose for water - then you shouldn't have
too much problem with back-flow - as long as you are careful not to overfill
the tank (maybe use a measuring cup to measure it's capacity, then decrease
that by 1/4 and only add the remaining amount each time to be safe).
Then, as long as the nozzle of the hose is above the tank, no water should
come out. The hose may be pretty long though, and you may need to pump
several times before water starts to flow. It might also be good to include
a pneumatic valve.
The coolest system would involve two tanks, connected serially - one full of
water and one filled with pressurized air (separated by a valve).
Then you could fill the lower tank, pressurize the air tank, then flip the
switch and the air will force a bunch of water out.
I'd think that both tanks would have half the air pressure at that point, so
you might not get all of the water out. Closing the switch and filling the
air tank again for a second blast might do the trick.
Also, I seem to recall some pneumatic "t-tubes". You might be able to add a
t-tube to mimic a miracle grow container. You might just end up blowing air
out of two hoses instead of one - and not doing any siphoning at all.
Just some ideas...
"Steve Moldovanu" <wolf_hunter_03@hotmail.com> wrote in message
news:HHB03L.144o@lugnet.com...
>
> pushes it through the hose on top. Problems are right now that I need to • buy the
> model and see exactly how much space there is and how could I stop the • water
> from coming out?
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Message has 2 Replies:
 | | Re: Water Tank in 8454?
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| (...) Hi, Without trying it I think it will be hard to get a good jet of water because your hoses will be constricted on the way at each 'T' & port, and the end of your hose will be the same constriction or wider. I would think that you will need to (...) (21 years ago, 30-Jun-03, to lugnet.technic)
| | | Re: Water Tank in 8454?
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| (...) The more water you put in, the less air you have capacity for. If you make sure that you don't fill more than 1/4 of your total air capacity with water, you might be able to blow the entire load with one charge. The downside is you'd need to (...) (21 years ago, 1-Jul-03, to lugnet.technic)
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Message is in Reply To:
| | Re: Water Tank in 8454?
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| And right behind the cab are two opposing doors with some (...) Oh that is weird. When I looked at the Technic site at www.lego.com/technic, it showed that both side doors could be opened at the same time, or was it an error? Oh so that is the (...) (21 years ago, 30-Jun-03, to lugnet.org.ca.rtltoronto, lugnet.technic)
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