SpudFiles

Before I begin, this cannon was inspired by this. Seeing as it is a very rare antique,
I thought instead of hunting for one, it would be more practical to build one.
Plus, this gun was practically free, all the parts were either lying around the house
or scraped from previous projects.



I'm pretty sure this is classified as an elastic compressed dart gun. It uses
high strength surgical tubing to plunge a bike pump, which is rigged to a barrel.
It is triggered by a ball valve, which pinches the piston when closed.
When the valve is opened, the plunger quickly sinks, shoots air through the barrel,
and sticks a dart into whatever was on the business end.



I used several hose clamps to secure a caulking gun to the bottom,
which now serves as a stirrup, and an anchor for the tubing.



Also, I rigged a PVC construction to the gun, so the barrel can slide in and out, and be loaded from the breach.



Overall, this thing is pretty powerful. It sinks darts at least 1/2" in wood.
I think if I add more bands, I can get >800 fps velocities.



Accuracy is...flawed, but not impossible.
The sudden lunge of the plunger makes this feel more like a shotgun than an airgun.
Plus, I don't have any sights right now, but I think I can mold some from epoxy.
Nevertheless, I almost killed a very dodgy spider with it.

again was too late on the other

cool gun so its a pull back and fire kind of gun? should be pretty fast to fire like the concept of no pumping

You hit the nail on the head. It's still kinda slow, but it beats lugging around an air compressor.

With a name like that, I was assuming it would be based on this...

I don't think your meant to talk about shooting at living things, a spider is a living thing.
Pretty cool concept though.

More ghetto than that... and you have to be a zombie yourself to use it

now why am I so intrigued by ghetto looking stuff suddenly....

I like the look. Video + damage?

And I'm even more intrigued by this inspiration you had, this old gun is pretty weird... so is it's patent... never saw anything like that before!

I'll try to get video up, but it won't have sound
I guess you'll have to imagine a very loud sneeze when it fires!

...also, sorry the spider, I hate them so much, I didn't think it of it being offensive. It's still very much alive, due to my shoddy aiming :cussing:

Wow. I'm amazed it works at all

You should try a proper pneumatic, the darts will go much deeper even with a basic valve and relatively low pressure.

LeMaudit wrote:now why am I so intrigued by ghetto looking stuff suddenly....

Also.

And I'm even more intrigued by this inspiration you had, this old gun is pretty weird...

Pretty inefficient too: