Monday, September 26, 2011

Lots of shooting, slingshots and cats

A new video is online!

This time, the pulley based draw length extension employed by the Bullpup Sling-X-Bow has been brought over to a conventional slingshot. 32 cm (13") of additional acceleration make this camo painted huge frame a true performer.

Both weapons are shot through the chrony, and the crossbow won by only a few percent.

The original design is from Mr. Robert Blair, it is called the "ComBow". The Slingshot Channel converted Mr. Blair's invention for the much faster flatbands, and also for the far more powerful "butterfly" shooting style. The result is a stronger slingshot, but it is also pretty bulky.

The video shows to more frames carved from dogwood, and a hand protection "glove". The slingshots are all used against a 75% empty 5 liter beer barrel. The beer was no longer drinkable, but good enough for the slomo cam to take some nice shots.
Posted by The Slingshot Channel at 9:20 AM

22 comments:

  1. PHIL-ROKSeptember 26, 2011 at 1:14 PM

    you have to go back and do more slow-mo destruction it was very entertaining watching something get crushed by a lead ball.

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  2. Opticus SpicusSeptember 26, 2011 at 1:28 PM

    Hallo Jörg,
    wie immer ein TOP Video. Das Teil Butterfly aufzuziehen ....Alle Achtung. Dicke Arme. Wieviel Lagen hast Du denn da benutzt?
    Ich plane gerade einen Slingbow nach deinem Muster aus Metall zu bauen. So richtig Heavy Metal. Mal sehen, wie es wird.
    Viele Grüße aus dem Hunsrück

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  3. Kylie Sven O'possumSeptember 26, 2011 at 1:34 PM

    I am impressed that your com bow shot almost as fast as the bull-pup. This experiment has inspired me to make my own com bow. It also seems that the com bow style would be easier to build. Have you ever tried shooting steel cubes. I have cut small steel cubes off of a 1/2" square steel bar. It really cuts the sheet metal well. I shot one right though both sides of my sheet metal building. Oops!

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  4. EntdeckerSeptember 26, 2011 at 2:36 PM

    wow... wirklich tolles Video! Die Zeitlupe macht erst deutlich vielviel Power wirklich hinter den Kugeln steckt.

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  5. Celtic SlingshotsSeptember 26, 2011 at 2:48 PM

    The bull-pup design is top of my slingshot to do list.I can't wait to free up some time to make one.

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  6. Tosh TogoSeptember 26, 2011 at 3:55 PM

    Joerg, if the bullpup had only two bands per side, the longer 'butterfly' rubber of the 'combow' would have been more powerful than the short bands of the bullpup, corrrect? Then to increase the power of the bull pup, would it not make sense to move back the anchor point of the rubber to make for a longer length or do the rollers rob more energy as they roll more to accommodate the longer rubber? I wish I had the time to make this test myself, but I don't so I have to bother you with the questions.

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  7. The Slingshot ChannelSeptember 26, 2011 at 4:49 PM

    ToshTogo, you can not keep the rubber under tension for a longer time without loosing most, if not all of the power. The bands on both the bullpup and the combow are not pretensed, just enough to stay on the rollers.

    Draw length and rubber thickness are almost linear. Twice the drawlength means you can get the same results than using twice the rubber thickness.

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  8. slingshotmaniacSeptember 26, 2011 at 7:29 PM

    Your cats in the videos are stars,too.They are resistent against the impact noise from a slingshot,i think.
    LOL.
    Armin

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  9. oawbfoinsklfbawoSeptember 26, 2011 at 8:32 PM

    loving all your work :D

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  10. camelSeptember 26, 2011 at 9:01 PM

    More cats please :D

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  11. GregSeptember 26, 2011 at 9:20 PM

    This was a good video. I LOVE that bullpup slingshot crossbow!!

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  12. CamilloNSeptember 26, 2011 at 10:11 PM

    I love the theory with the ballbearings to increase the length, really cool.

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  13. FinnySeptember 26, 2011 at 11:59 PM

    Thanks Joerg like your carved frames.

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  14. MuizertSeptember 27, 2011 at 8:34 PM

    I have seen you say that keeping the rubber under tension will make them lose most power several times , and offcourse i believe you know. But howlong are does that mean, for example : 5 minutes , 10 ?? Just wanna know so if a burgler gets in , when do i load the assault slingshot ;)

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  15. jiveSeptember 28, 2011 at 5:09 AM

    Very interesting stuff.
    Cat seems slightly suicidal.

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  16. Slingshot WraithSeptember 28, 2011 at 12:31 PM

    would like to see another video on ammunition, using the aforementioned cube style in different sizes, mayhaps get some ballistics gelatin and look at the terminal ballistics of the various rounds

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  17. "The Illiterate Fisherman"September 28, 2011 at 9:20 PM

    Josef,
    What the hell ! Just unbelievable trying to keep up with the designs. Just wonderful. Keep up the good work. Thanks for all the ideas.
    Jim k (rev Shnorr)

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  18. AlOctober 1, 2011 at 2:38 AM

    Respekt vor der Handwerkskunst, ja das ist echte Kunst!!! Mach weiter so! Kepp up the good work.

    Grüße aus Hamburg

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  19. AlOctober 1, 2011 at 2:39 AM

    keep meinte ich natürlich

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  20. ArasOctober 1, 2011 at 12:58 PM

    This comment has been removed by the author.

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  21. ArasOctober 1, 2011 at 1:00 PM

    Nice video Joerg!

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  22. CaseyEOctober 12, 2011 at 3:50 AM

    "Loverboy"

    ReplyDelete

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