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Need help for paintball gun

Post questions and info about pneumatic (compressed gas) powered cannons here. This includes discussion about valves, pipe types, compressors, alternate gas setups, and anything else relevant.
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Need help for paintball gun

Unread postAuthor: us sniper » Thu Jun 07, 2007 2:05 pm

I am currently making a paintball gun with the same setup of a nelson gun. I want to make the gun reload itself after each shot by pusing the bolt back. My gun is designed to look like a M4. I thought about using the air from the shot to push the bolt back, but I didn't know if it would have enough power. I also thought about using a motor like an aeg.
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Unread postAuthor: Matt221985 » Thu Jun 07, 2007 2:18 pm

why not just make a hopper like a real paint ball gun?
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Unread postAuthor: us sniper » Thu Jun 07, 2007 2:25 pm

Because, I am making it as real as possible. The paintballs come in casing for added effect. I am modeling the gun after the m16 by Rap4.com
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Unread postAuthor: Matt221985 » Thu Jun 07, 2007 2:28 pm

ohh ok, never built one of these, sorry
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Unread postAuthor: us sniper » Thu Jun 07, 2007 7:53 pm

I decided to use the motor like an aeg. I think it will be strong enough if I made my own gear box. Does anyone know how to make the motor be semi automatic because right now the gun will continue to fire as long as I pull the trigger.
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Unread postAuthor: COD_FILLETS » Thu Jun 07, 2007 9:05 pm

I dont think a motor would be enough to launch a paintball, unless its a rather large one. Also, I would buy a gearbox over making one, they tend to be more reliable in my opinion.

To make the motor "semi-automatic", you could try:
1) Pushing and releasing the trigger (assuming you are using a momentary switch).
2) A 555 Monostable circuit.

Found the website with a 555 calculator: http://555-timer.clarkson-uk.com/operation/frames2.html
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Unread postAuthor: us sniper » Thu Jun 07, 2007 9:12 pm

The motor is not launching the paintballs. It is pushing back the bolt for the nelson gun. I am using an on/off switch.
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