Winch Operated Portable Slingshot Cannon

[JoergS]

Took me 10 hours, but now it works!

I wanted to make a REALLY powerful slingshot crossbow. But of course there is only so much draw weight you can handle, and even the push-out forks have their limits. So I had to incorporate a winch.

So I used an entirely new concept. The entire trigger/lock part slides between two 40mmx20mm wooden rails. The winch rolls up a mountaineer type rope wich draws out the band. A rubber powered arm locks the winch every 45 degrees of turning (8 positions on a full turn) Trigger and lock have aluminum tubes glued into the wood so the force is evenly distributed and the screws do not wear out the wood.

The force vector of this slingshot is entirely straight, there is NO fork height at all. This makes the weapon incredibly strong.

I had little time to shoot it as it is dark, but it has a ton of power with the first test bands (20cm x 14cm x 7cm Thera Gold per side). A child can operate the winch, and there is much potential for even stronger bands.

A fantastic new toy!

Here is a short video, it was too dark for more shooting... stay tuned.

http://www.youtube.com/watch?v=dHVQ27a-ric

Jörg

 

[rcmodel]

Is that really a Bungee Cord winch cable??

Hows that work??

rc

 

[Dionysusigma]

Holy hell. I would LOVE to see what sort of damage that contraption is capable of... Fine work!

 

[JoergS]

Not a bungee cord. Mountaineer grade rope is what it is. No slippage.

 

[TimboKhan]

Soon, you will be producing full on slingshot artillery! I am always impressed, man.

For fun, you should branch out and start putting together some small scale medieval weaponry.

 

[GCBurner]

Looks very close to a Roman ballista in the mechanism.

 

[BRad704]

What? No bayonet? sheesh...



Your local nuts and bolts store must know you by name... And that beast is amazing!

 

[JoergS]

Have finished the tripod today, minus the paint job.

Looks pretty good! Full and free motion, and the weapon can be detached just by lifting it out.

It has beeing snowing since yesterday noon, and we are buried in snow. It is also freezing cold. So no destruction video yet!

Here is a pic of my snow covered car:

And last not least, my 18 yr. old niece Julia, who lives with us, in a nice Zombie parody during our christmas feast. I think the greed is genuine! The bird smelled and tasted heavenly.

(She is really quite pretty normally...)

 

[Mp7]

Frohes Fest!

 

[GCBurner]

With the tripod, it looks like the type of artillery the Romans mounted on their warships. Now all it needs is a trough for shooting javelins.

 

[wheelgunslinger]

Very nice contraption and niece!

When do we get some video of the new weapon in live fire trials?

 

[JoergS]

It's very very cold (-20 centigrade) and there is a ton of snow. Not the right weather for destruction fun! The ballistic gelatin will freeze in no time.

So I guess the destruction fun will have to wait for warmer days!

 

[JoergS]

It was too cold for a destruction video, but I wanted to show the thing in action.

Here:

http://www.youtube.com/watch?v=eObHehevODE

 

[DAdams]

Awesome!! You should take that to Hollywood, CA for some exposure.

I could see Arnold or Bruce behind that after building it themselves while trapped in time during the wood age.

 

[pitsmile]

That is awesome. I want one.