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JoergS
 
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The "Novitzkenegger" Slingshot Challenge!

The "Butterfly" shooting style brings the power of slingshots into new dimensions.

With a "wingspan" of about 1,60 meters, Jörg Sprave can break the 60 ft/lbs (80 Joule) projectile energy that the US military considers as lethal for humans.

So what would happen if a guy with the arm span of Dirk Novitzki (2,30 meters) and the power of Arnold Schwarzenegger (in his days) could achieve with a forward extended slingshot, giving him a 3 meter draw?







To find that out, a new slingshot crossbow has been designed, with a total draw length of said 3 meters. A trigger based locking mechanism allows a normal person to cock and shoot like Novitzkenegger!

The results are quite impressive. 75 m/s with a 36 gramm, 19 mm lead ball (576 gr, .75"). 102 Joules, over 80 ft/lbs!

Here is the video (the last one from the old house, my wife packs the boxes right now):

+ YouTube Video
ERROR: If you can see this, then YouTube is down or you don't have Flash installed.
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The Slingshot Channel

My Blog: http://slingshotchannel.blogspot.com/
Twitter: slingshotchnl
My youtube-channel: http://www.youtube.com/user/JoergSprave
Old 08-21-2010, 09:06 AM JoergS is offline  
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cow_crap
 
I truly love your posts.
Old 08-22-2010, 08:02 PM cow_crap is offline  
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Chilly
 
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Originally Posted by cow_crap View Post
I truly love your posts.

QFT, this is unbelievably awesome. Is this just an excuse to build your mechanical release into something?
Old 08-22-2010, 09:29 PM Chilly is offline  
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JoergS
 
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Well, I am waiting for the movers. They should be here in a couple hours. I only had time for a very quick test this weekend, with all the box packing. So I had to use what was there.

Exploring the limits is fun. I think that I can get to about 120 Joules of energy with a portable slingshot crossbow. That is about the energy of a .22, but with a lot more stopping power. With a tiny piece of workout rubber bands!
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The Slingshot Channel

My Blog: http://slingshotchannel.blogspot.com/
Twitter: slingshotchnl
My youtube-channel: http://www.youtube.com/user/JoergSprave
Old 08-22-2010, 11:15 PM JoergS is offline  
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Stealthmode
needs moar stealhmode
 
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The name you came up with for that contraption is freaking fantastic.
Old 08-26-2010, 05:13 AM Stealthmode is offline  
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cow_crap
 
Joerg, are you interested in archery at all?
Old 08-26-2010, 09:13 PM cow_crap is offline  
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