A Dream Came True: Home Made Full Auto Crossbow! - playithub.com
Published: 1 week ago By: JoergSprave
By: JoergSpravePublished: 1 week ago
28, 494 Likes 133 Dislikes
When you make non gunpowder weapons at home, you are usually restricted to single shot contraptions or manual repeaters at best. But of course the ultimate goal is to build a full auto machine gun style weapon!
That is by no means very easy. Muscle powered weapons are simply not quick enough for a true Brat-a-tat action. Gas powered engines are too heavy and clumsy for a portable weapon.
Of course there are modern battery drills - plenty of torque in small packages, lightweight and affordable. It makes sense to use those as power sources. But how to turn rotational motion into a linear cocking process?
We finally, at last, had success using a rack and pinion mechanism. The wooden gears had to be reinforced with massive aluminum for a reliable operation, but the result is very convincing.
It is a reality - true machine gun feeling!
Now on to optimization.
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For future versions; consider replacing the rack and pinion with a slider crank mechanism. A common example is a piston in a engine. You could replace the gear interface with 3 pivot points, one being the drill, that will be more precise and wear less.
Keep making awesome videos!
- Ken in Hawaii - Jan 2017
The full auto crossbow
Instead of the drill if can you make one with a lever, where the drill bit goes, and use your hand to rotate the flywheel.
did you consider to make it more like an airsoft gearbox by adding a second gear which deceases wear and increases power transfer? also having the correct angle of engagement on the teeth reduces wear on the gears.
also a way of adding a magazine could be by using a drum mag on top, with a hole in the middle with a scope in it. or try chain-fed bolts/ nails (grind the edge down)
Thanks in advance.
2) I believe you that it feels like a machine gun to fire, because every time you fire it, you start laughing. Your laugh when you are watching something be destroyed is one of my favorite things about this channel.
Thank you very much for all of your hard work. Slingshot channel is fun, interesting, and insightful. Please continue to stay safe around large amounts of stored energy.
Consider making the magazine detachable an spring loaded, perhaps? You could then load up several magazines and keep shooting for longer?