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 Revolver Slingshot

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JoergS
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PostSubject: Re: Revolver Slingshot   April 21st 2011, 2:27 am

I am currently in the process of making an eight shot slingshot gatling gun that is crank operated. Not so easy, but I hope to get it to work over the Easter days.

I have a "gatling" slingshot already, but it really is more like a single action revolver slingshot really.

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PostSubject: Re: Revolver Slingshot   April 21st 2011, 4:09 am

Holy shit Joerg mate you need to make a crossbow version of that!
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PostSubject: Revolver Slingshot   April 21st 2011, 4:33 am

That is what I am up to. More like eight rotating crossbows.
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PostSubject: Re: Revolver Slingshot   April 21st 2011, 9:38 am

JÖRG!!! You rock!!!!

Sir...that is very cool and very creative! thumb up

One thing I love about you is that every time you show us something I have to say "WOW, never seen that before!"

I thank you for sharing you creations with us, I for one love seeing the many different items you come up with. You're quickly becoming one of my favorite people!! Definitely my favorite German!

Awesome!! SINZA
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Hariken Okami
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PostSubject: Re: Revolver Slingshot   April 21st 2011, 10:05 am

I do not want to meet the man who decides to play Russian Roulette with that.
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PostSubject: Re: Revolver Slingshot   April 21st 2011, 3:39 pm

SINZA wrote:
JÖRG!!! You rock!!!!

Sir...that is very cool and very creative! thumb up

One thing I love about you is that every time you show us something I have to say "WOW, never seen that before!"

I thank you for sharing you creations with us, I for one love seeing the many different items you come up with. You're quickly becoming one of my favorite people!! Definitely my favorite German!

Awesome!! SINZA

Yea Sinza goodluck ranking anything he builds. He's going to need a scale of his own.
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PostSubject: Re: Revolver Slingshot   April 21st 2011, 4:50 pm

JoergS wrote:
That is what I am up to. More like eight rotating crossbows.

Joerg,

Why not build "one" that has consistent one inch groups at...well at least 40-50 yards? Wink

I mean it's cool to shoot things that are 10 yards away and marvel at the power of the weapon, but what about greater ranges? pirat

Ivo
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PostSubject: Re: Revolver Slingshot   April 21st 2011, 5:49 pm

(Back to original topic) Sweet work there Joerg I very much enjoy watching your videos and love this sling shot design. cheers thumb up thumb up

I think another cool Idea is to figure out a way to preload each shot so that all you have to do is pull a trigger and a shot is made. But on a new sling shot because there is nothing wrong with that one. Razz

P.S. Keep up the good work and practice on that world record. crossed fingers thumb up Very Happy
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JoergS
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PostSubject: Re: Revolver Slingshot   April 22nd 2011, 3:19 am

Yes, the idea of my eight shot one IS to have them preloaded and rotate it. I tried to power the rotation with a rubber band, but it was too weak to overcome the friction strong bands are causing.

The crank will rotate the eight preloaded crossbows, pushing the topmost loaded pouch over the notch so the shot falls.

Regarding the long range issue, slingshot balls have the disadvantage that there is no way I can think of that gives them spin (like bullets fired from a rifled barrel). Without spin, the balls are much more subject to wind and will stray.

Accuracy is pretty good for about 25 to 30 yards,which really is the longest distance I can shoot in my backyard. At the upcoming East Coast Slingshot Tournament, there is a 70 yard gong shot contest. Experts will hit the bottom of an oil drum with 20% of the shots (2 hits from 10 attempts).

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PostSubject: Re: Revolver Slingshot   April 22nd 2011, 12:04 pm

Ok, here is a sneak preview to one of my coolest projects ever.

An eight shot slingshot crossbow that fires its shots in less than a second, ideally!

You preload the eight bands, then you turn the crank, which turns the "barrel drum". The topmost pouch and ball hits the post, which pushes ball + pouch upwards and the shot falls. You keep turning and the next shot falls... next... next... next.

It is mechanically functional, but I was too exhausted to complete it today. It is really as much work as making eight slingshots! I have to make eight bandsets and and and... for today, I just put on an old Thera Tube Green bandset I had lying around. Works fine.

Should be a lot of fun shooting it. Will do so over Easter.









PS: Sorry for the messy workshop, I already received orders from management (wife) to clean it up very soon :-)
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PostSubject: Re: Revolver Slingshot   April 22nd 2011, 12:10 pm

Ok I take it back, I don't want to meet the man who would play Russian roulette with that thing above.
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PostSubject: Re: Revolver Slingshot   April 22nd 2011, 12:44 pm

Hariken Okami wrote:
I do not want to meet the man who decides to play Russian Roulette with that.
Yeah that Yeah that WTF
Ok I take it back, I don't want to meet the man who would play Russian roulette with that thing above.



I think it has already been said. scratch
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PostSubject: Re: Revolver Slingshot   April 22nd 2011, 8:01 pm

idiot1jerk2face3 wrote:
(Back to original topic)

Buddy, I respect Joerg and would not swerve off the topic.

What I'm talking about is this...

Joerg wrote:
Regarding the long range issue, slingshot balls have the disadvantage
that there is no way I can think of that gives them spin (like bullets
fired from a rifled barrel). Without spin, the balls are much more
subject to wind and will stray.

Accuracy is pretty good for
about 25 to 30 yards,which really is the longest distance I can shoot in
my backyard. At the upcoming East Coast Slingshot Tournament, there is a
70 yard gong shot contest. Experts will hit the bottom of an oil drum
with 20% of the shots (2 hits from 10 attempts).

I'm currently discussing and planning a project with my guys that I will bust out as soon as we have a working solution for this long range/accuracy issue with low velocity projectiles shot out of slingshots/bow/crossbows.

So far we have excluded traditional rifling as the velocity is low enough already and rifling would make it even worse without giving even a marginal improvement in range/stability of the round.

However I brought up a system long known in painball/airsoft community known as "hop-up"...basically a setup which will induce "backspin" on the projectile creating what is known as Magnus Effect which is creates a difference in the pressure of air surrounding the projectile...without getting into a deep explanation of what Magnus Effect is, I can just say that it causes even the low velocity projectile to glide on the body of air - straightening out the trajectory and thus extending the range of the weapon.

What is an issue though...is that the weapon needs to be perfectly level for outstanding accuracy. This may be too much for this specific topic, but if it helps Joerg in any way and his inventor instinct kicks in high gear and he comes up with something not only cool, but also superseding the performance of all predecessor slingshots...then at least he'll have some one to blame. Laughing

Cool project Joerg and guys, don't get mad at me, I'm crazy about man powered projectile weapons and if I didn't have such a demanding job, I'd be here all day kicking ideas back and forth.. cheers

All Best,

Ivo


Last edited by Ivo on April 22nd 2011, 9:09 pm; edited 1 time in total
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Hariken Okami
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PostSubject: Re: Revolver Slingshot   April 22nd 2011, 8:55 pm

idiot1jerk2face3 wrote:
Hariken Okami wrote:
I do not want to meet the man who decides to play Russian Roulette with that.
Yeah that Yeah that WTF
Ok I take it back, I don't want to meet the man who would play Russian roulette with that thing above.



I think it has already been said. scratch

The second statement was about his eight shot crossbow.
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JoergS
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PostSubject: Re: Revolver Slingshot   April 23rd 2011, 11:59 am

Have completed it today, came out great. I had to do some finetuning. like reshaping the transport wheel a bit to make room for larger ammo.

Have shot 20mm steel balls (.79") with it all afternoon, the only problem is that the fun is over so soon. It is amazing to see several steel balls in the air at the same time! The weapon needs less than a second to fire all eight rounds.

Accuracy is kind of poor when you fire handheld. Like all Gatling guns, this works better from a tripod. But there is this peculiar full auto feeling!

Will do the video on the morrow.

Jörg
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PostSubject: Re: Revolver Slingshot   April 23rd 2011, 12:44 pm

Looking forward to the video, I'm sure it'll be amazing!
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PostSubject: Re: Revolver Slingshot   April 24th 2011, 11:19 am

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PostSubject: Re: Revolver Slingshot   April 24th 2011, 11:27 am

Fuc. King. Sick. If you don't get scared by this, there's something wrong with you. This is freaking incredible. I love it. Insanely awesome, good god. I'm a little speechless actually. I'm going to have to show this to my brother, and probably everyone else I know too Very Happy Well done, you really outdid yourself on this one. Again. My hat is off to you.
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PostSubject: Re: Revolver Slingshot   April 24th 2011, 1:20 pm

BRILLIANT! I was wondering if it got caught on loose bands while rotating, but apparently not. This is just so awesome.
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PostSubject: Re: Revolver Slingshot   April 24th 2011, 1:57 pm

Looks Like someone earned their spot on attack of the show's around the net again.
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PostSubject: Re: Revolver Slingshot   April 24th 2011, 2:31 pm

Twice in a row? I don't think it'll happen, the machete virus pretty much saturated the masses desire to see crazy slingshots.
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PostSubject: Re: Revolver Slingshot   April 24th 2011, 9:18 pm

Jessie Ventura nicknamed his Gatling Gun "Old painless." If you are gonna give it an alternative name, I suggest you call your Gatling Slingshot "Old Painful".
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PostSubject: Re: Revolver Slingshot   April 24th 2011, 9:32 pm

Hey Jorg, what happened to the ballistic gelatin?

That was always my favorite part of your vids, I would love to see what this thing would do to it. Twisted Evil

Maybe do a special showcasing all your crazy slingshots and what they do to the gel.
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PostSubject: Re: Revolver Slingshot   April 25th 2011, 2:18 pm

Ok, so many people wanted slomos and destruction.

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PostSubject: Re: Revolver Slingshot   April 25th 2011, 2:35 pm

THAT...WAS...AWSOME!!! affraid What a Face
Thanks for the slomo vid I coulden't help but make the sound of the shots on slow motion. Razz
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PostSubject: Re: Revolver Slingshot   April 26th 2011, 2:32 am

Have you ever thought of using a drill or a small but powerful motor in replacement of your turn crank?
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PostSubject: Re: Revolver Slingshot   April 26th 2011, 2:45 am

He could but for only eight shots I don't think it would be more helpfull than not.(unless he makes one with much more shots) scratch
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PostSubject: Re: Revolver Slingshot   April 26th 2011, 3:41 am

A motor would need quite some power, so it would be heavy, and the battery required as a source would add to the extra weight.

I tried rubber as energy source, but it did not work. The crank handle works fine, and is in line with the Gatling design anyway.

What I will look at next is a speed loading device for it. The way it works right now, it takes me about a minute to reload. If I can bring that down to 10 seconds, that'd be nice.

The video seems to go viral again, by the way!
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PostSubject: Re: Revolver Slingshot   April 26th 2011, 7:03 pm

Viral indeed! I even found you on WIN, a part of the Failblog sites.

http://wins.failblog.org/2011/04/26/epic-win-video-diy-gatling-slingshot-crossbow-win/

Way to go!
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