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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: Ragnarok » Sat Dec 06, 2008 1:50 pm

ALIHISGREAT wrote:maybe its because i have a copper fetish?

You can't have a proper metal fetish until you can tell metals apart by smell.

The worrying thing is that I can tell metals apart by smell - I can tell the difference between Aluminium, Steel, Stainless steel, chromed steel, zinc-dipped steel, copper, brass, zinc, magnesium and lead by nothing more than smelling them. I can be blindfolded - don't even have to touch them.

It's a great ability for freaking people out if they ask me what something is made from. :D
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Does that thing kinda look like a big cat to you?
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Unread postAuthor: jackssmirkingrevenge » Sat Dec 06, 2008 2:14 pm

Ragnarok wrote:It's a great ability for freaking people out if they ask me what something is made from. :D


... as well as a great indicator that it's time to get out more ;)
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Unread postAuthor: Ragnarok » Sat Dec 06, 2008 2:41 pm

jackssmirkingrevenge wrote:... as well as a great indicator that it's time to get out more ;)

It might be... if it wasn't something I could just DO. It's little different to how you can tell songs apart by how they sound - you don't need to see the filename.

I can tell metals apart by how they smell. I just happen to have abnormally keen senses compared to most people, and that lets me do that kind of thing.
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Does that thing kinda look like a big cat to you?
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Unread postAuthor: Daltonultra » Sat Dec 06, 2008 5:56 pm

markfh11q wrote:That looks pretty damn good. Cat looks scared of it, at least.

Also, why is there a door floating in front of your wall?


The only thing that cat is scared of is starvation, which he is convinced sets in five seconds after his last meal...
Our apartment is set up a little oddly; we're on the back of the building, but our door is at the front, with a hallway between the living room and the stairs.


Brian the brain wrote:You might have missed my repeater efforts, but putting a spring behind your piston is a waste if you don;t also drill a tiny equilising hole through the edge ( outside of the seat area!!)

This will make it close when the trigger is released, trapping the rest of previously wasted air inside the chamber.

This is a very easy mod, but it will make your cannon capable of multiple shots, and the shots themselves will be quieter because the chamber doesn't empty after the ammo has long left the barrel.

You'll up efficienty without sacrificing results..

Very well built cannon by the way!


Actually the spring is for a different reason; The BV safety is good, but if the QEV pilots accidentally somehow, the barrel behind the BV will pressurize, so the QEV piston will not reset by itself, and when I open the BV, the chamber will exhaust. The spring would reseat the piston lightly, so when I open the safety BV, only the small section of the barrel behind it will exhaust before the piston is completely sealed.


EDIT: Sorry guys, no damage vids tonight. It's Effing freezing outside.
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Unread postAuthor: Brian the brain » Sun Dec 07, 2008 4:20 am

Actually the spring is for a different reason; The BV safety is good, but if the QEV pilots accidentally somehow, the barrel behind the BV will pressurize, so the QEV piston will not reset by itself, and when I open the BV, the chamber will exhaust. The spring would reseat the piston lightly, so when I open the safety BV, only the small section of the barrel behind it will exhaust before the piston is completely sealed.



I understood it the first time.
But are you getting what I told you?
Drill one small hole and it will do that-plus go semi
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Unread postAuthor: Daltonultra » Sun Dec 07, 2008 7:34 pm

I get you. Will this also allow for filling from the chamber side of the QEV?

I do have some thoughts on a semi-auto loading mechanism. But that's for later.

Anyway, I did get one shot off today, but only at ~120psi. It planted a .490 lead shot into a lawn timber, just slightly shallower than flush.
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Unread postAuthor: Radiation » Mon Dec 08, 2008 9:56 am

Nice damage pics! Did the lead flatten? It's hard to tell from the pics.

Ragnarok wrote:
ALIHISGREAT wrote:maybe its because i have a copper fetish?

You can't have a proper metal fetish until you can tell metals apart by smell.

The worrying thing is that I can tell metals apart by smell - I can tell the difference between Aluminium, Steel, Stainless steel, chromed steel, zinc-dipped steel, copper, brass, zinc, magnesium and lead by nothing more than smelling them. I can be blindfolded - don't even have to touch them.

It's a great ability for freaking people out if they ask me what something is made from. :D


LOL do you date Androids?
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I can see it now Ragnarok. "I love that scent you're wearing, is it anodized titanium?"
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Unread postAuthor: SP00K » Mon Dec 08, 2008 10:01 am

Sweet gun, cute kitteh too. What do you plan on using for?
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Unread postAuthor: Daltonultra » Mon Dec 08, 2008 4:20 pm

Radiation wrote:Nice damage pics! Did the lead flatten? It's hard to tell from the pics.


Dunno, couldn't get it out. I would imagine it did, somewhat. The shots I took with it when it was a BV gun distorted pretty heavily.

SP00K wrote:Sweet gun, cute kitteh too. What do you plan on using for?


Sh*ts and giggles, mainly.
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Unread postAuthor: SP00K » Tue Dec 09, 2008 3:24 pm

Sh*ts and giggles, mainly.


Lawl, that's all they're really for I guess. :o
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Unread postAuthor: Ragnarok » Tue Dec 09, 2008 7:21 pm

Radiation wrote:I can see it now Ragnarok. "I love that scent you're wearing, is it anodized titanium?"

Not quite. I don't encounter titanium enough to know what it smells like, and also, metals don't have a very strong smell - they're distinctive, but faint. Even with my unusually sensitive nose, I still need to get right up close.
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Unread postAuthor: Daltonultra » Tue Dec 09, 2008 8:28 pm

Well, if you want to get more familiar with titanium:
http://www.thinkgeek.com/homeoffice/kitchen/8ace/
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Unread postAuthor: sputnick » Mon Dec 15, 2008 9:37 pm

nothing S.P.E.C.I.A.L

Haha, just joking, it actually looks very clean and simple, just the way I like them :wink:

400 PSI?? that is insane. you should get a stronger pump :wink:
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Unread postAuthor: Daltonultra » Mon Dec 15, 2008 11:38 pm

Got an old mini-fridge downstairs. I'm gonna cannibalize the compressor from it.
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Unread postAuthor: sputnick » Tue Dec 16, 2008 4:15 pm

good call.

I have been thinking recently about where I could get a fridge compressor for cheap, and mini fridges are only about 100$, but would the compressor be of equal strength? because I very much doubt it would be the exact same mech. in a mini fridge...
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