- Posts: 3
- Joined: Thu Jul 15, 2010 7:54 pm
I could use some advice with a concept I'm working on.
I'm looking to put together a device similar to what you'll see in this video at 1:12:
and then I'm going to insert it into a metal walking cane, similar to this one:
I've attached a pdf of what the contraption should look like. I think it's just a ball pump on one end, attached to a length of 3/4" OD PVC tubing. This piece of tubing is where the water will be stored. At the other end I will need some sort of valve, which will then connect to a length of 1/4" OD tubing, going all the way to the tip of the cane where a hole will be drilled to connect it.
The ID of the cane is 3/4", so the tubing fits just perfectly. However, I'm trying to figure out what is the best valve to use. If I go with a ball valve, I'll have to find a way to put it inside the cane and to drill a hole for the handle to come out of. I was also considering a solenoid valve, but was unable to really get a grasp on if they would work or not (the only one I found that seemed to fit was this: http://www.ascovalve.com/Common/PDFFile ... eries.pdf). Secondly, would a ball pump achieve what I want for this? Should there be a check valve at the connector of the pump and the tubing?
[The extension pdf has been deactivated and can no longer be displayed.]
- Posts: 683
- Joined: Sun May 03, 2009 10:49 pm
Quack damn you.
- Posts: 3825
- Joined: Sun Apr 09, 2006 9:01 pm
Pressurization is indeed a concern, too. The best system here may be a "pressurized reservoir," which powers all good water pistols - not too powerful, but very compact. The idea is that you take a tank that's already filled with water, then pump air into it (the inverse of a standard air pressure setup). So seal off a section of the cane, install a screw-on cap so you can fill it with water, and install a Schrader valve so you can pump in some air with a bike pump.