I wonder what we did wrong

Discussion in 'General Slingshot Discussions' started by Tobias, Sep 26, 2012.

  1. Tobias

    Tobias New Member

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    Hi shooters, i have shoot a few times with Jörg, we shoot heavy bands in Butterflystyle and big ammo even jörg shoot with his 4 layer setup! <br>and we shoot the 25mm steel with about 50 m/s over the chrony <img src="http://illiweb.com/fa/i/smiles/icon_biggrin.png" alt="Very Happy" longdesc="1"> thats some Power!<br><br>an now look at that:<br><embed pluginspage="http://www.macromedia.com/go/getflashplayer" src="http://www.youtube.com/v/oVKCLWWQI6k" width="425" height="350" type="application/x-shockwave-flash" wmode="transparent" quality="high" scale="exactfit"></embed><br><br>Bill hays shoot with weak little bands 60 m/s.<br>if this is true we are stupid.<br><br>what you think?
     
  2. DaveSteve

    DaveSteve New Member

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    The ammo is different.<br><br>You shot 25 mm steel. It weighs 63.81 grams<br><br>Bill shot a 900 grains lead ball. It is 58.31 grams. I don't know about the diameter. Probably smaller than 25 mm.<br><br>Just a guess. IMHO.<br><br>How about try it again with the same setup he had?
     

  3. Bill Hays

    Bill Hays New Member

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    Hello Tobias,<br><br>You're not accounting for several factors. First it is much warmer here than there. It was over 95 degrees when chronied. Also, I did pull full butterfly (only a couple of inches short from full albatross) on the chrony test... I'm 6'4" tall with long arms, that's a pretty significant draw... about 65" <br><br>The projectile is .85 caliber, weighing slightly more than 900 grains... cast from a Dixie musket ball mold I got off ebay. At the end of the video I cut a card with it standing 7 meters away.... the segment was videoed at 1000 frames per second. The ball is visible coming out of the slingshot for 27 frames.<br><br>Okay, now what we'll do is call the distance 21 feet from the front of the slingshot due to the hand being more forward than the feet... and we'll just say that there's 30 frames the ball is in just in case I missed a few.... so the shot is visible for exactly 1 second then since the playback is at 30 frames per second. Knowing the distance and how many frames it takes to reach the card gives you the speed... I already know what it is, do you? <br><br>Finally, it's easy enough to test... all you have to do is make a fork that has a 1.75" gap, mount it on a 6' pole, mark off the 65"... pull one of your 1" steel balls back and let 'er rip. The bands I used are about 26 mm straight cut X (about) 30.5cm (active length) with a light kangaroo leather pouch from Ray Bazonski.<br><br>Have fun Man! <img src="http://illiweb.com/fa/i/smiles/icon_biggrin.png" alt="Very Happy" longdesc="1">
     
  4. Tobias

    Tobias New Member

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    Bill, you have to know i shoot a long time with strong bands, maybe you have now a idea how many times i shoot over the crony with different bands and ammo.<br><br>i shoot your bands normaly with 16mm (16,5gramm) sometimes i shoot 20mm with the same bands (33gramm) and i have a feeling that they are a bit weak ... but i would never use them for the 1" ball <img src="http://illiweb.com/fa/i/smiles/icon_smile.gif" alt="Smile" longdesc="2">) <br><br>the stuff with the fork widh and the warm wether are not soo important. we talk here about 100% too much <img src="http://illiweb.com/fa/i/smiles/icon_smile.gif" alt="Smile" longdesc="2"><br><br>What ever you made there it´s ok, but it´s funny and it didn´t work in Germany<br><br>look at my Ravioli vid i made for Newconvert at this day we have 40°C here in Germany <img src="http://illiweb.com/fa/i/smiles/icon_wink.gif" alt="Wink" longdesc="15"><br><br>I think we no longer need to talk about it, the video is already filmed not so good that it would be representativ.<br><br>I think it´s more a vid too present your nice slingshot and there are nice destruction and penetrations! from this view, it is absolutely fine.<br><br>all the best.