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pneumatic spearguns...

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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Re: pneumatic spearguns...

Unread postAuthor: keks2033 » Fri Nov 16, 2018 2:41 pm

I plan to make just such a pneumatics. There won't be much of a rock, 20-40 atm, depending on the diameter of the pump rod. Perhaps the pump handle will play the role of fits. I know that this is not the most effective scheme, but it must be done.
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Re: pneumatic spearguns...

Unread postAuthor: hectmarr » Sat Nov 17, 2018 11:43 am

Ideas about a two-stage compression pump with a force lever would be useful ... :roll:
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Re: pneumatic spearguns...

Unread postAuthor: jackssmirkingrevenge » Tue Nov 20, 2018 5:46 am

keks2033 wrote:I know that this is not the most effective scheme


If you have to pull to pressurize, it's really not comfortable at all. For a pump you want to be pushing against a hard surface, especially if you don't have the benefit of a lever.

Slightly related, have a look at clide's minipump. Here's a cool flash animation he made, click on the commands in the top right of the screen to go through the steps.
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Re: pneumatic spearguns...

Unread postAuthor: hectmarr » Tue Nov 20, 2018 4:29 pm

I could not see the animation. It seems that I'm going to have to unsubscribe this old PC ... :oops: The article with photos, I like it. Interesting construction. :)
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