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Crossbows - Everything about Building, Modding, and Using your Crossbow Gear

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3 posters

    Has anyone tried this design?

    sfarney
    sfarney
    Fresh Blood

    Doesn't mean
    I'm new to crossbows


    Fresh Blood Doesn't meanI'm new to crossbows

    Posts : 2
    Join date : 2013-12-07

    Has anyone tried this design? Empty Has anyone tried this design?

    Post by sfarney Sun Dec 08, 2013 12:10 am

    Thank you for this forum, gentlemen.  

    The problem with slingshots is the dependence on highly corruptible materials.  And crossbows have that awkward -- cross-bow thingee.  It seems like we could get the same power from coil springs.  Here is a rough suggestion:

    Has anyone tried this design? Spring10
    (I hope the final image is a little larger than that.  If not, there is a full-size copy in my private gallery -- please have a look.)

    Carbon filament springs would be lighter than steel springs, and the modern materials are very strong.  If this weapon worked, it could potentially be quite small -- almost like a pistol.  

    The question is whether the springs would impart the speed required.  In the mechanics of a bow, the more it straightens, the faster the string is drawn.  This roughly corresponds to the desired acceleration of the arrow.  But a coil spring might be the opposite -- the closer it gets to its desired shape, the more it relaxes.  Thus, I thought it might need a little compound action with the double pulleys. 

    If anyone has any experience with a similar design, success or failure, please let me know.

    -Slade
    Todd the archer
    Todd the archer
    Crossbow Junkie

    I live here!


    Crossbow JunkieI live here!

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    Has anyone tried this design? Empty Re: Has anyone tried this design?

    Post by Todd the archer Sun Dec 08, 2013 3:40 am

    Could work, more spear gun like than crossbow. A loose definition of crossbow could include: Flexing swinging arms connected by a string which then propel an arrow.
     
    There are other designs which use rigid arms powered by some sort of spring however these are usually classified as ballistas. 

    Nothing wrong with your idea just not quite a crossbow by most peoples definition. 

    Still having said that most here would be interested in the technology.

    Todd
    Todd the archer
    Todd the archer
    Crossbow Junkie

    I live here!


    Crossbow JunkieI live here!

    Posts : 581
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    Has anyone tried this design? Empty Re: Has anyone tried this design?

    Post by Todd the archer Sun Dec 08, 2013 3:50 am

    It has been discussed before. Check out the oicture at the bottom of this page:

    https://thearbalistguild.forumotion.com/t353p30-coil-springs-as-power-source

    Todd
    Roger.Lopez
    Roger.Lopez
    Fresh Blood

    Doesn't mean
    I'm new to crossbows


    Fresh Blood Doesn't meanI'm new to crossbows

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    Location : California

    Has anyone tried this design? Empty Re: Has anyone tried this design?

    Post by Roger.Lopez Tue Sep 30, 2014 7:44 pm

    Has anyone tried this design? 10708778_913445812017708_5667305576059070529_o
     Well i made this using 55lbs Springs.

    Sponsored content

    Has anyone tried this design? Empty Re: Has anyone tried this design?

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