Instructables
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This is essentially a shoulder-mounted sling shot that shoots large homemade Nerf-type darts.

It can also be used to launch other things like tennis balls, golf balls, tomatoes, apples, and even raw eggs.

This is something I had been working on in the back of my mind for over a year, trying to figure out all the details. For some reason the challenge of making a homemade, self-contained, bungee-powered, multi-ammo launcher was incredibly intriguing to me. I had never seen anything like it, and thought it would make a great experimental project.

The finished product is by no means high-powered like a compressed air- or combustion-fueled cannon, but it still packs a decent punch for what it is, and has turned out to be extremely fun to play with.

Please note that most of the information and details for this project are contained in the photos in the form of notes (the little yellow boxes). If you plan to make one of these, be sure to study all the photos and their notes carefully.

Thanks for looking!
 
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Step 1: Video!

Here's a video showing the Bungee Bazooka in action.

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gearup5001 month ago
In the main picture what are you shooting at. It looks like a paraglider
seamster (author)  gearup5001 month ago

It's a small RC plane, about 36 inches wide.

Cool. Wish I had an air field for that
rastareyn8087 months ago

can this thing shoot water balloons? I'm trying to make something similar

seamster (author)  rastareyn8087 months ago
No, the barrel is a bit too small. Well, I take that back. I think it would actually work for a small, half-filled balloon.

It would leave quite a welt though, and wouldn't even pop. Youch!

also, how hard is it to draw it back and lock it in? And do you think speargun surgical tubing should get more range?

seamster (author)  rastareyn8087 months ago

My 10 year old son can't draw it back, but my 15 year old nephew can. So I'd say medium pullback difficulty.

As far as speargun tubing, I don't have any experience with it so I can't say either way.

schneb1 year ago
about that ground to air combat in the video, maybe with some practice vs. womp rats you'd have better luck? I used to bull's-eye womp rats in my t-16 back home. They're not much bigger than 2 meters.
hahaha it is still in the planning stage, I might post it. the goal is not to launch it straight at you super fast, just kind of launch it in the air a bit to where you can catch it from a distance.
I saw a customized mini fridge on youtube that robotically launched a cold beer onto the couch when a button commanded it from a remote. hahaha
Hahaha I saw that too, it was awesome! I don't know if I can build one like that though...should try to and see what happens...
seamster (author)  bobthebuilder7281 year ago
I like the idea, hope to see you pull it off. Keep me posted, okay?
For sure!
That's impressive. Pretty complicated, but well made.
msh13531 year ago
bravo "seamster"
it's very attractive
How hard is it to pull back? I am building a vending machine that launches out a soda to you, using rc parts to trigger it. Do you think a rc car motor could pull it back?
seamster (author)  bobthebuilder7281 year ago
Launches soda at you? Sounds dangerous!

I don't think an rc car motor has enough torque or power to pull back a bungee cord strong enough to launch a can of soda, no. But I'm not sure how exactly you're attempting this, and with what supplies. I'm interested to see how this all turns out though! Are you going to post this project when it's completed?
Viaticus1 year ago
This is too awesome - I'm heading to the shop this weekend to build one!
ostomesto1 year ago
Very very very cool, I like it, might have to make one if I have enough $. Favorited this to come back when I do
haha Loving Bazooka's!
DaProject2 years ago
Great work!
patron_zero2 years ago
This is so going to solve my dogs-barking-at-squirrels-in-trees problem !
...Do you shoot the dog or the squirrel?
Some days that's a toss-up (lol) but we have some really persistent squirrels that have actually come down from the trees and 'knocked' on the storm door when the dogs were inside the house !
We have a window mounted bird feeder and during breakfast the squirrels will come up and hang from it while eating bird seed. The only problem is that we get a nice pretty view of their um.... underside while we are trying to eat. Blech!
Kevin123453 years ago
I've made many paper rockets like this one, some longer than others. You have given me an idea for a bazooka with a thinner barrel and a single length of tubing attached on both sides that could be hooked to the paper clip. With just a small length of bungee from my backpack, this rocket travels over 5 houses down from mine.
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The fins may need to be protected by a cardboard discarding sabot during launch.
seamster (author)  Kevin123453 years ago
Not bad!

But man . . . that looks like it would do some serious ocular damage!
I've got to make one of these! Judging by the surgical tubing and size of the thing, I can imagine it kicks like a mule when fired and packs one heck of a punch.
bsmith623 years ago
Oooooohhhh... a balloon full of paint- paintball bazooka/mortar!
ilpug bsmith622 years ago
I'm not the only one who thought paintball bazooka then?
pspringer3 years ago
have you attempted to shoot a rolled up t-shirt like at sporting events? I am thinking may be cool at the school I teach at in the gym? not to far, not to hard and no FIRE involved.
ilpug pspringer2 years ago
Shrink wrap the shirt fist.
badideasrus2 years ago
have a question. if i made these to sell, would you be mad? or even care?
seamster (author)  badideasrus2 years ago
I wouldn't mind one bit. Go for it.
You should change the license on this Instructable if it doesn't matter, it means people know what they can do with it!
seamster (author)  Kryptonite2 years ago
Perhaps I will. (But in this case I'm not too worried about it.)
itri453 years ago
Could this thing shoot t-shirts
seamster (author)  itri453 years ago
I suppose it could, but I would need to make a different sling for it. If I ever get around to trying that, I'll post some info on the results.
Very nice, most definately an interesting build. To fire t-shirts I suppose you could place them in mug type cups like they shoot at ball games into the crowd. Therefore you would not need any modification to the sling.
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