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JHQJR-Revamped QEV Gun

Built a pneumatic 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: Maniac » Thu Nov 22, 2007 6:55 pm

man you guys get really off topic
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Coodude26 wrote:
People who laugh really hard at stuff that pisses you off/you getting hurt, who then say "I'm sorry, I can't stop" but you know they easily could.

Mr.C: That's not as easy as you think. It's like me kicking you in the balls and telling you to stop crying.
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Unread postAuthor: psycix » Fri Nov 23, 2007 4:01 am

MaxuS wrote:In almost every thread, you mention HEAL, yeah its a good gun but sometimes it does sound like you cant keep it out of the conversation, like its always a competition of whos got the best.


Hes just TOO proud of it, let him be.
I would be too!

Your guns and cannons can be loved like it are your children :love5:
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Unread postAuthor: frocksie » Fri Nov 23, 2007 3:43 pm

@Ragnarok, Thanks for catching my GGDT error, it can hit about 1000 fps with a 1 gram projectile, I accidentally said 5 oz. My bad on that one. About the soldering, thanks for the compliments, the reason it looks so good is because I used sandpaper to take off the excess solder.
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Unread postAuthor: Ragnarok » Fri Nov 23, 2007 4:57 pm

Ah, sandpaper. I normally just accept stray solder, but that's a way of dealing with it I hadn't considered.
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Does that thing kinda look like a big cat to you?
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Unread postAuthor: paaiyan » Fri Nov 23, 2007 5:12 pm

That's definitely a nice cannon. I kinda want to build a copper one next, but I'm torn between the high pressures and good looks of copper cannons, and the massive projectiles and awe-inspiring power of larger cannons.

Yours is a good one, I like. Let's have some damage shots neh? I like damage...
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Unread postAuthor: Ragnarok » Fri Nov 23, 2007 5:20 pm

I have the large/small dilemma over my next project.
I feel like a little like doing a "simple" high end PVC/ABS combustion, but I also want to do a fancy 6mm auto copper combustion.

I may have to flip a coin over it.
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Unread postAuthor: Maniac » Fri Nov 23, 2007 5:39 pm

try some thing new i ve never seen you make a pvc cannon ever or a combustion. yea try the pvc one youll get more power to
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Coodude26 wrote:
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Unread postAuthor: frocksie » Fri Nov 23, 2007 5:44 pm

I will get some damage pictures as soon as possible, but I have put a nail through 3/4" plywood from ten yards.

@paaiyan: That is a question I am always dealing with, like whether to build this gun or a 2" piston gun, as my last one broke, due to lack of bumper.
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Unread postAuthor: The Kid » Fri Nov 23, 2007 8:26 pm

nice gun. the shape kinda remindes me of sb15s handheld hybrid
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Unread postAuthor: frocksie » Sat Nov 24, 2007 6:50 pm

Just took some pictures of damage, sorry to say that the damage isn't all that impressive.

For some reason the pictures are really blurry.

Image

Image

Image

Image
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Last edited by frocksie on Sat Nov 24, 2007 10:48 pm, edited 1 time in total.
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Unread postAuthor: Novacastrian » Sat Nov 24, 2007 7:07 pm

What pressure was used for the damage to the can? If it was the suggested 150 psi i would have expected a bit more damage too :?
Hope you get it sorted. :)
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Unread postAuthor: frocksie » Sat Nov 24, 2007 7:17 pm

Nova- It was 150psi, but the reason for the poor destruction is that I just glanced it and I shot it from a poor angle. Also, the can was filled with water.

This gun is really deceptively powerful, as there is no kick, and not all that loud. I would love to test this thing with some ballistics gelatin or another similar substance.
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Unread postAuthor: Ragnarok » Sat Nov 24, 2007 9:55 pm

Usually water filled cans do much more impressive things than empty ones.
Did you use a nail dart for shooting the can? If so, try something less pointy which will transfer energy into the water better.

The plywood shot is interesting. I would have expected a little more, but I don't have much experience with nail darts, I tend to throw bigger things at the target.
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Unread postAuthor: frocksie » Sat Nov 24, 2007 10:40 pm

try something less pointy which will transfer energy into the water better

I'm going to try it out tomorrow with some ball bearings and possibly some dowels.


The plywood shot is interesting. I would have expected a little more.

I think that the plywood shots are pretty impressive. If the nail darts didn't have tape on them, they would go straight through the board.

The nail darts are tremendous ammuntition. I put one of those nails through 3 inches of maple@150psi from 10 yards.
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Unread postAuthor: Ragnarok » Sat Nov 24, 2007 10:54 pm

Don't get me wrong, that's still very good.
What I mean to say is that I believe that you could do even better with them. A discarding sabot would produce nice results.
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