The Slingshot Channel Thread

[Cannoneer]

Hello Joerg. I have been following you're thread for a while so I know you are the master of slingshots. However I was wondering,have you ever considered building a slingshot rifle or pistol? If not then you should look them up because with you're skill you could probobly design a superior weapon. Seriously it would be cool.

[chinnerz]

Hello Joerg. I have been following you're thread for a while so I know you are the master of slingshots. However I was wondering,have you ever considered building a slingshot rifle or pistol? If not then you should look them up because with you're skill you could probobly design a superior weapon. Seriously it would be cool.

something like this [youtube][/youtube]

[Crna Legija]

i thinks it might be illegal in germany because it has a latche holding the band back

cool none the less

[JoergS]

Slingshot rifles may indeed be illegal here, not because of nthe latch, but because of the stock. This may qualify as "comparable" to an arm brace, insofar as it removes the strain on the wrist.

But there is a bigger problem: Rubber tires out very quickly. This means you have to load and shoot in an instant.

Loading a slingshot rifle also may cause accidents. When you use powerful bands, they may slip before you get them locked.

So that's why I do not think slingshot rifles make any sense.

[boyntonstu]

Slingshot rifles may indeed be illegal here, not because of nthe latch, but because of the stock. This may qualify as "comparable" to an arm brace, insofar as it removes the strain on the wrist.

But there is a bigger problem: Rubber tires out very quickly. This means you have to load and shoot in an instant.

Loading a slingshot rifle also may cause accidents. When you use powerful bands, they may slip before you get them locked.

So that's why I do not think slingshot rifles make any sense.

Have you ever seen a repeating crossbow?

They are safely cocked and shot extremely fast.

In addition, leverage is your friend when it comes to drawing a spring.


BTW The slingshot rifle shown above is easier to draw than a slingshot and the pouch is held by a pliers type grabber.

AFAIK You could pull it using both hands.

I believe that its levered gripping force on the pouch is greater than what our fingers can apply.


It seems quite fast and safe.

[Cannoneer]

Sorry Joerg I didn't know they were illegal in Germany. Still I'm sure it would have been cool. BTW I am working on one as I type(I'll post it as soon as I have a camera). I never thought about the bands being drawn for to long,for my slingshot rifle I will be using some really strong surgical tubing originally used for a bungee/trampouline ride. Anyway keep the wonderfull slingshots coming!

[JoergS]

Guess what... made one more today!

I think I forgot how it is to spend a lazy free day...

But I got this piece of Cocobolo and I just had to make a frame from it.

It is a variation of my "Double T" model, but this time, the over-the-top crossbars are Cocobolo, too. Of course there is the usual "heart of steel" - that is why I cut the Cocobolo rods in the middle, hollowed them out, then filled them with epoxy and laminated them to the frame. This will last forever.

The grip is absolutely gorgeous, it is so smooth that you can see your mirror image in it. The smoothness is just unbelievable. The shape is also really comfortable to hold!

I like it.







Here is the video:



Enjoy!

Jörg

[JoergS]

Now that the outdoors swimming season has started, I made a "maritim" inspired slingshot.

I laminated aluminum plates (stepping board) onto the Multiplex (birch plywood) frame! This reminds me on a pool ladder. It also makes the frame pretty much unbreakable, I guess.

Oh, and Poseidon loves golfing... that is why I made the frame real big, I designed it to chuck golf balls from it. Which I do in the video, at 160 km/h (over 100 mp/h).







Here is the video:



Jörg

[Gun Freak]

Just watched that video, not quite as fast as some of the golf ball cannons on SpudFiles but it's definitely very impressive for a slingshot! Nice work, love the one in the post before too.

[JoergS]

Made this a while ago, a simple slingshot pistol. It has ball bearings in the release part, though.

Threw it into some corner after I hit my thumb loading it, but now that it has healed I dug it up again. You just have to use weak bands, otherwise loading is dangerous.

Because of the very short draw length, it is weak anyway. But precise, and fun to shoot!







Jörg

[boyntonstu]

The guy who sells the sligshot rifle has a safer method of drawing the pouch.

His pliers hold the pouch very securely.

He then places the screw into a hole and hold the pliers until release.

You pistol has a much better trigger.

Why not try using his method of drawing and your trigger in combination?

I can 'see' your pistol with the rubber coming from below prior to stretching over the fork. Much more power with a full draw.

I understand that you don't want rubber to be stretched for any period of time as it weakens.

[JoergS]

Stu, I had this "from below" idea too, actually the pistol originally had rollers and the bands used to be attached near the grip.

But cocking it was impossible! In order to achieve the 500% elongation needed for best performance, the rubber was still very short. You had to stretch the pouch forwards, then put it over the rollers, then pull it back between the release rods. Veeery hard.

So I sawed of the rollers and attached a normal fork.

[boyntonstu]

Stu, I had this "from below" idea too, actually the pistol originally had rollers and the bands used to be attached near the grip.

But cocking it was impossible! In order to achieve the 500% elongation needed for best performance, the rubber was still very short. You had to stretch the pouch forwards, then put it over the rollers, then pull it back between the release rods. Veeery hard.

So I sawed of the rollers and attached a normal fork.

Why is the pistol legal and the rifle not?

Here's and idea for 500%.

A $5 ratchet bar clamp/spreader would be ideal for your pistol.

http://www.harborfreight.com/24-inch-ra ... 46809.html

[JoergS]

Stu, the pistol may in fact NOT be legal. But it is so weak that it qualifies as a toy. Anyway, I would not consider presenting it on youtube, too much attention. As I said, I HAD to try it.

The ratchet idea came to my mind already, that would probably be the way to go.

But I am not sure if the release/trigger mechanism would be strong enough for heavy bands.

[boyntonstu]

Stu, the pistol may in fact NOT be legal. But it is so weak that it qualifies as a toy. Anyway, I would not consider presenting it on youtube, too much attention. As I said, I HAD to try it.

The ratchet idea came to my mind already, that would probably be the way to go.

But I am not sure if the release/trigger mechanism would be strong enough for heavy bands.

We think alike.

The nice thing about the spreader bar is that you could manually pull it to about half way and ratchet the remainder.

After a shot, easily slide it back down.

I am positive that you can design a trigger to safely hold a 100 pound draw.