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Combustion dart launcher

Built a combustion cannon? Then post it here! This section is for completed, finished cannons that you have built. Please include pictures and information.
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Unread postAuthor: FishBoy » Sat Feb 21, 2009 6:28 pm

Nice, can't wait to see it.
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Unread postAuthor: ckman » Sat Feb 21, 2009 7:08 pm

Yeah hopefully it will be beast
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Unread postAuthor: inonickname » Sat Feb 21, 2009 8:40 pm

Should be good, can't wait to see a creation like this from ck, he's shown good ingenuity so far in most of his creations..Builds with what he has a lot.

Thanks Jr..
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Unread postAuthor: psycix » Sun Feb 22, 2009 11:10 am

ckman wrote:T piston valve piolited by a qev it will be like Ranganoks

Good choice. Im excited to hear from you how the building goes.
If you need any help, feel free to ask.
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Unread postAuthor: boyntonstu » Fri Jan 15, 2010 1:58 pm

psycix wrote:Not bad at all!
Your best creation so far! Keep it up!
May I introduce you to this:
Image
These things (but then for larger diameters) will look thousand times nicer then that tape.
Otherwise, try tie-wraps.

Is your barrel secured by friction? Like simply shoving the duct-taped barrel end into the coupler?
Thats NOT safe. Get a cam-lock, union or threaded fitting. One day the barrel will blow out and you've got yourself a harpoon gun.


One day the barrel will blow out and you've got yourself a harpoon gun.

I disagree.

A friction fit barrel will not be dangerous because:

1> If empty there is nothing to push against.

2> The pressure is exerted for less than an inch or so.

All the force will quickly dissipate.

See: http://www.spudfiles.com/forums/shootin ... 19944.html

FWIW

BoyntonStu
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Unread postAuthor: psycix » Sat Jan 16, 2010 12:03 pm

You just kicked up a year old topic.

Ok, it WILL not blow out, but it CAN blow out.
Well, my argument against a friction fit barrel:
Ammo can jam.

This can either cause the pressure to push the barrel, or even worse, if ammo is stopped while moving, the inertia will hammer the barrel out.
I'm not saying it will, I just say it could happen.

On top of that I sometimes like to jam ammo tightly into the barrel with a lot of force. "You will fit!" :D
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