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Crossbow type pneumatic

Unread postPosted: Mon Nov 17, 2008 8:16 pm
Author: jor2daje
I just made a simple crossbow out of some wood and a bow I got a garage sale. I was thinking maybe i could make some sort of piston inside a chamber type thing to use it as a fast to reload, small caliber potato gun. I know they make bows like this for paintball but would it be possible to make and effective one myself. If so any ideas for how to do it.

Unread postPosted: Mon Nov 17, 2008 8:25 pm
Author: VH_man
Calling JSR.....

He made one of these once with... Guess... A syringe. from what i remmeber it worked pretty darn well.

Unread postPosted: Mon Nov 17, 2008 11:45 pm
Author: mega_swordman
This is especially how NERF guns work. They use a piston that is pulled back and a spring behind it that, when triggered, pushes the piston forward really quickly and compresses the air.

Unread postPosted: Tue Nov 18, 2008 3:02 am
Author: jackssmirkingrevenge
VH_man wrote:Calling JSR.....

He made one of these once with... Guess... A syringe. from what i remmeber it worked pretty darn well.


Here you go ;)

mega_swordman wrote:This is especially how NERF guns work. They use a piston that is pulled back and a spring behind it that, when triggered, pushes the piston forward really quickly and compresses the air.


This is how all spring-piston airguns work.

Unread postPosted: Tue Nov 18, 2008 5:48 pm
Author: jor2daje
Ok thanks guys I might try to make my crossbow into one, what sorta chamber size and barrel length should i do, would it be similar cb ratio as a pneumatic?

Unread postPosted: Tue Nov 18, 2008 7:24 pm
Author: jor2daje
Ok I just made a prototype and it is pretty successful. http://www.spudfiles.com/forums/my-pneumatic-crossbow-prototype-t16496.html