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Ball valve .177 BB gun

This area is for the discussion of BB or airsoft sub machine guns, and or other small arms such as pellets.
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Ball valve .177 BB gun

Unread postAuthor: Robthelad » Fri Dec 19, 2014 2:40 am

Hi I'm new to this forum.
I've made an moderatedly good airgun already which consists of
1"copper pipe with end stop for the tank filled with a bike valve.
Then that feeds into a lever ball valve
The barrel is 1/2" copper pipe.
All of these joined with compression fittings and epoxy

I want to add a 5mm barrel to the 1/2" valve but don't know how best to do it?
Also besides adding a spring to the valve is there anything else I could do to make it more powerful?
Thanks
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Re: Ball valve .177 BB gun

Unread postAuthor: jrrdw » Fri Dec 19, 2014 9:18 am

Is the 5mm barrel copper as well? Find a reducer....

Welcome to Spudfiles! :mrgreen:
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Re: Ball valve .177 BB gun

Unread postAuthor: dajoro » Fri Dec 19, 2014 11:19 am

Robthelad - I would suggest building a new gun for 5mm. Keep the one you have completed if it works. I've learned its better. Then you'll have two guns.
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Re: Ball valve .177 BB gun

Unread postAuthor: Robthelad » Sun Dec 21, 2014 10:43 am

What I've done is epoxied a 5mm tube into the 1/2" copper tube. This power is alright. It goes thru a sheet of plywood. the barrel is made of brass and I think it's a little bent. I can pump to 300psi then release with bungee cord. Hopeing to put a scope on it and maybe hit some tin cans!
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