Timeline for How to emulate 40ft (12 m) of water?
Current License: CC BY-SA 3.0
11 events
| when toggle format | what | by | license | comment | |
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| Jul 2, 2015 at 20:32 | comment | added | MSalters | @Vajura: Indeed, that is the whole point of the method. Lots of pressure, limited volume, limited energy. | |
| Jul 2, 2015 at 15:21 | comment | added | SkipBerne | try a bicycle air pump. pressure is pressure. | |
| Jul 2, 2015 at 15:16 | comment | added | Ruslan | Would this really supply the needed pressure to the whole 18"x18"x18" robot? I very much doubt that such thick garden hoses are common. | |
| Jul 2, 2015 at 12:14 | comment | added | Vajura | Wait so, if i had a 10m x 10m x 10m tank completly sealed, except a 10cm hole and attached to that hole is a 40ft hose going straight up. Now if i fill everything up with water to the top of the hose i would have the same pressure in the tank as if that hose and hole would be lets say 5m in diameter? | |
| Jul 2, 2015 at 9:33 | comment | added | Selene Routley | Excellent answer! I would also add the safety info even here: even though there is only $\frac{1}{2} m\, g\, h$ worth of energy stored to propel shards and otherwise do damage, where m is the mass of water in the pipe, this could be dangerous for certain container materials. Like, if someone decided to try it with a thick glass bottle. | |
| Jul 1, 2015 at 20:07 | comment | added | Bernhard | @JohnRennie You put water in your bicycle tyres? | |
| Jul 1, 2015 at 17:19 | comment | added | John Rennie | To be fair, the OP specifically asked what weight would be needed. Otherwise I wouldn't have mentioned putting a weight on top of the tank. As for using a 40 foot header pipe, I can't see why that's functionally any different from using a compressor. It wouldn't have to be a big deal one, even my bicycle pump can generate 60 psi. | |
| Jul 1, 2015 at 15:30 | comment | added | SkipBerne | A 2 piece fiberglass pool filter is plenty large and can withstand the pressure. A stainless steel belt goes around the sections after you put the RUT in there. Add a hose and use a bicycle pump if you cant achieve 40 foot hose head. It is only 18 psi. | |
| Jul 1, 2015 at 14:38 | comment | added | dotancohen | By far the safest and easiest to implement solution. Any leaks or other issues that the OP will have with this method, he would have with any of the other methods as well. | |
| Jul 1, 2015 at 14:31 | comment | added | Russell McMahon | +1 for the 40' hose for head. I was going to put that in a comment but I see you have done it. A "nice" method overlooked by many. | |
| Jul 1, 2015 at 12:21 | history | answered | MSalters | CC BY-SA 3.0 |