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The Slingshot Channel Thread

All non-spudgun related discussion goes here such as projects, theories, serious questions, etc. All "off-topic" posts (aka useless posting, determined by moderators) will be removed.
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Unread postAuthor: octocamo » Thu Dec 24, 2009 2:28 am

hahahaha EPIC WIN
i just have to make an motivational poster out of this.
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Unread postAuthor: spudamine » Thu Dec 24, 2009 2:41 am

Man, i can't believe no one else has wowd at this.
WOW.


Joerg makes a new slingshot almost every week so we're a bt WOW'ed out. You should check out his youtube channel.
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Unread postAuthor: starman » Thu Dec 24, 2009 2:45 am

Joerg, I can't help but think this thing to be a potential left thumb knuckle buster.....ouuuccchhh..... :wink:
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Unread postAuthor: JoergS » Thu Dec 24, 2009 3:58 am

starman wrote:Joerg, I can't help but think this thing to be a potential left thumb knuckle buster.....ouuuccchhh..... :wink:


Again, it may appear to be so, but you are mistaken. The design is very safe.

Did you ever see a shotgun barrel cut in half, lengthwise? The steel is so thin that you instinctively can not believe that it doesn't explode in your face, given the tremendous force of the detonation.

Same thing. Theoretically researched, tested in safe conditions first and then put through extensive field tests, with professional measurement equipment (hi speed camera etc.).
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Unread postAuthor: McCoytheGreater » Thu Dec 24, 2009 4:01 am

starman wrote:Joerg, I can't help but think this thing to be a potential left thumb knuckle buster.....ouuuccchhh..... :wink:


I've already asked him this. He's the slingshot guy, though. Go see his blog. It's nifty.
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Unread postAuthor: boyntonstu » Thu Dec 24, 2009 6:10 am

JoergS wrote:
starman wrote:Joerg, I can't help but think this thing to be a potential left thumb knuckle buster.....ouuuccchhh..... :wink:


Again, it may appear to be so, but you are mistaken. The design is very safe.

Did you ever see a shotgun barrel cut in half, lengthwise? The steel is so thin that you instinctively can not believe that it doesn't explode in your face, given the tremendous force of the detonation.

Same thing. Theoretically researched, tested in safe conditions first and then put through extensive field tests, with professional measurement equipment (hi speed camera etc.).


Perhaps an aluminum or plastic plate over your knuckles and ramped about 1" downwards would make even wing shooting completely safe.
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Unread postAuthor: JoergS » Thu Dec 24, 2009 6:48 am

Stu, yes, if I wanted to do wing shooting, a hand guard would be in order. My house is located in a populated area, so wing shooting is a no-no - you can never know where the bullet lands...

Sadly, there are no slingshot tournaments in Germany. where those fun disciplines would be offered.
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Unread postAuthor: boyntonstu » Thu Dec 24, 2009 6:53 am

JoergS wrote:Stu, yes, if I wanted to do wing shooting, a hand guard would be in order. My house is located in a populated area, so wing shooting is a no-no - you can never know where the bullet lands...

Sadly, there are no slingshot tournaments in Germany. where those fun disciplines would be offered.


A hand guard would reduce the psychological fear factor.

(Did you see the Trom-Boyn video?)

Amazing power and penetration

Would it be legal in Germany?
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Unread postAuthor: JoergS » Thu Dec 24, 2009 8:14 am

Stu, saw the video. Cool! But of course illegal in Germany. What is left for us here is slingshots w/o arm rest, and some tiny loopholes in the otherwise air tight gun laws.

I am working on a compound bow conversion so it directly shoots lead and steel balls. I figure if a compound bow can fire an arrow faster than a slingshot, the bow will fire the slingshot ball faster as well.

Merry XMas!

Jörg
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Unread postAuthor: Solar » Thu Dec 24, 2009 3:13 pm

The reverse could be... Emergency sex props made from slingshot.
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Unread postAuthor: Brian the brain » Thu Dec 24, 2009 3:15 pm

This thing is not complete without ghetto ammo...

erotic beads perhaps?
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Gun Freak wrote:
Oh my friggin god stop being so awesome, that thing is pure kick ass. Most innovative and creative pneumatic that the files have ever come by!

Can't ask for a better compliment!!
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Unread postAuthor: JoergS » Thu Dec 24, 2009 9:58 pm

I think rhinestones would make good ghetto ammo. Or .45 slugs, used of course, picked out of a brick wall at a crime scene.
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Jörg Sprave's sling bow concept!

Unread postAuthor: JoergS » Fri Dec 25, 2009 11:49 am

OK, I took the challenge and made an arrow shooting slingshot. I like lead and steel balls, but I realize that an arrow with a broad head can cause more damage. Those who want to hunt larger animals may have more success with arrows. So, here is my idea about how to shoot arrows from a slingshot.

Of course I had watched the "Hunt big game with a slingshot" video series on youtube, and I think the "whisker buscuit" idea is valuable. But I did not want to spend 20 to 50 Euros just on the biscuit!

So I had to solve a number of problems.

1. The draw length limitation

Arrows are rarely longer than 32", and such long arrows weigh more than a .75" (19mm) lead ball! An increase of the draw length beyond 32" is absolutely necessary to achieve serious speed.

So I added two metal tubes to the grip, moving the whisker biuscuit about ten inches towards the shooter. This way, you can draw out a 32" arrow 42" from the pouch.

Image

2. The pouch problem

Gripping the rear end of an arrow though a leather pouch is much harder than gripping a thick lead ball. The "golf tee" solution proved negative for the balance of the arrow, so I had to solve the issue otherwise.

The solution: A change to the pouch! Close to the band attachment, one more hole was punched to either side of the pouch. Through these holes, rubber bands had been tied to both the upper and the lower rim of the pouch.

This allows you to hold the bunched up rubber just like a slingshot ball, and it automatically squeezes the arrow tightly in place. Problem solved.

Image


3. Cheap whisker biscuit

A whisker biscuit is essentially just a brush that is formed like a ring, with the "whiskers" directing to the center of the ring. It guides the arrow, but it lets the stabilizers (feathers, rails, whatever) pass easily. Very nice!

So I decided to go with a whisker biscuit, which I made myself, from one dollar baby bottle brushes. I simply bended the brushes, cut off all excess and tied two of them together so they form a ring. This works, and is really cheap.

Image

Here is the video:

[youtube]http://www.youtube.com/watch?v=9cJ9JYcRlMk[/youtube]

Sorry for the grain, my camcorder doesn't like low light conditions.

This works!

Greetings


Jörg
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Last edited by JoergS on Fri Dec 25, 2009 12:44 pm, edited 1 time in total.

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Unread postAuthor: McCoytheGreater » Fri Dec 25, 2009 12:11 pm

I'm really digging the whisker biscuit. That's smart thinking. The bristles on the bottle brush are almost exactly like those on the whisker biscuit. How did you attach it?
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Unread postAuthor: JoergS » Fri Dec 25, 2009 12:14 pm

Thin steel wire. Very simple, yet effective.
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