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Ball Valve Breech Loader for GB's?

Post about things you have launched or thought about launching. Also post about various materials used for building cannons. No posts about explosive projectiles!
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Will this work OK?

Poll ended at Thu Nov 22, 2007 4:36 pm

It's been done before... should work.
4
50%
I don't see any reason why not....
4
50%
 
Total votes : 8
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Unread postAuthor: jimmy101 » Mon Nov 12, 2007 11:15 am

I wonder if you could find a suitable 3-way valve to avoid having to drill a big old hole in the valve body?

Plumbing Supply scroll down to the 3-way valves
plastomatic

Or perhaps a standard ball valve and a T fitting? Chamber on the top of the T, Barrel on the other top of the T, ball valve on the leg of the T. Build with the T upside down.
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Unread postAuthor: williamfeldmann » Mon Nov 12, 2007 12:05 pm

Wouldn't it be cheaper and easier to just use a 2 inch tee (if sleeving the barrel) or a 1 1/2 inch tee (if not) that is bored out to slip around the barrel and make a rotating clip feeder? A 2 inch ball valve sucks to turn, even a pvc one, and there is no good way to rig up a magazine or hopper to the side of the ball valve.

Not to mention that a tee is way less money than a 2 inch ball valve, or any ball valve for that matter. Plus no centering, no extra epoxy work. I guess, maybe I don't see why you want this particular loading method so bad given the other options.

Edit: Voted it should work... but why?
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Unread postAuthor: Maniac » Mon Nov 12, 2007 3:46 pm

yea it feeds pretty smooth i dont have any sdr 21 so i dont know how nice it will roll through there being sleved but if you taper it from the insde it would be fine
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Unread postAuthor: PVC Arsenal 17 » Mon Nov 12, 2007 4:31 pm

I'd much rather drill a hole than pay $45+
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Unread postAuthor: jimmy101 » Tue Nov 13, 2007 12:13 pm

PVC Arsenal 17 wrote:I'd much rather drill a hole than pay $45+

Good point.

But, if you use an un-mod'd ball valve and a T then you don't have to drill any big-ass holes (and risk trashing the ball or the valve body) and the only added cost is the cost of a T.
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