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Superfast valve idea

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Superfast valve idea

Unread postAuthor: Gunner » Wed Dec 26, 2007 11:23 am

Just came my mind, and I think that valve could be pretty fast if it works.[/img]
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Unread postAuthor: jackssmirkingrevenge » Wed Dec 26, 2007 11:26 am

Basically a piston valve where the pneumatic pilot is replaced by a mechanical latch, it should work brilliantly if you can make the latch strong enough. I made something similar (but in coaxial form) with this launcher.

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Unread postAuthor: Hotwired » Wed Dec 26, 2007 11:27 am

Probably would be. Problem is it's focusing a large piston face of pressure on a small sear. Bit like a springer air gun.

If you can machine up a good sear mechanism it'd work :)
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Unread postAuthor: jackssmirkingrevenge » Wed Dec 26, 2007 11:32 am

Hotwired wrote:Probably would be. Problem is it's focusing a large piston face of pressure on a small sear. Bit like a springer air gun.


Good analogy, I had made my components out of metal reinforced epoxy (what else :roll: :D ) and they served me well, but the piston was less than 3/4" diameter - for larger launchers I would stick to a conventionally piloted piston, and concentrate of having a small pilot volume and high flow pilot to get good performance.
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Unread postAuthor: iknowmy3tables » Wed Dec 26, 2007 12:02 pm

its been done before, I've been thinking about doing this for awhile because I like the speed

how might you plug one of these into ggdt, do you think maybe a pilot equal to the piston diameter
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Unread postAuthor: Hawkeye » Wed Dec 26, 2007 12:09 pm

The trigger is basically just a flush handle for a urinal. You can probably buy one.
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Unread postAuthor: iknowmy3tables » Wed Dec 26, 2007 6:23 pm

Hawkeye wrote:The trigger is basically just a flush handle for a urinal. You can probably buy one.

:? the actual trigger or the release mechanism, I don't think anyone would have trouble making a handle but a flush handle and the release mechanism are completely different, a flush handle is just a lever the sides on the inside and outside of the toilet tank, to pull a the flapper I find nothing useful in a flash handle for this
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Unread postAuthor: Hawkeye » Wed Dec 26, 2007 6:54 pm

Not a flush handle from a toilet, a flush handle from a urinal. They do function similar to the diagram, only holding back water instead of air.
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Unread postAuthor: mark.f » Wed Dec 26, 2007 8:13 pm

Another idea is to use some sort of ball-bearing release mechanism around the circumference of the piston. Allows more distribution of the force on the piston, as well as being easy to actuate as well with a simple lock collar.
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Unread postAuthor: jackssmirkingrevenge » Wed Dec 26, 2007 10:00 pm

markfh11q wrote:Another idea is to use some sort of ball-bearing release mechanism around the circumference of the piston.


*cue link to clide's mini-pump*

but I can't be bothered, it's the holidays and I'm sick at home :? :D
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Unread postAuthor: mark.f » Wed Dec 26, 2007 11:38 pm

I got it.

Long link.

I, too, am tired. See you guys tomorrow.
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Unread postAuthor: iknowmy3tables » Fri Dec 28, 2007 3:53 pm

markfh11q wrote:Another idea is to use some sort of ball-bearing release mechanism around the circumference of the piston. Allows more distribution of the force on the piston, as well as being easy to actuate as well with a simple lock collar.

just like a quick conect eh?
this suddenly reminds me of an old idea
edit: how about this
Image
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Unread postAuthor: jackssmirkingrevenge » Fri Dec 28, 2007 6:16 pm

if you could make it, looks good :)
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Unread postAuthor: Carlman » Mon Dec 31, 2007 1:25 pm

hmm looks complicated lol, could make for a fast bb gun...
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