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    Rat-Trap Springs

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    PierreC
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    Fresh Blood Doesn't meanI'm new to crossbows

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    Rat-Trap Springs

    Post by PierreC on Thu Aug 08, 2013 11:49 pm

    My local surplus place had a nice deal on some pretty sturdy rat traps.  I picked up two to scavenge the springs out of them...  They call out to me to make some sort of torsion bow.  The traps have two springs in each, wound in opposite directions.  

    I'm thinking of making a sturdy frame to house all four springs, allowing me to adjust the pre-load, and the initial angle that the springs start moving at.

    I'll try to hack up a quick drawing.
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    actionbow
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    Did you see my tool collection?


    Workshop SavvyDid you see my tool collection?

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    Re: Rat-Trap Springs

    Post by actionbow on Fri Aug 09, 2013 7:56 am

    Make it an inswinger and you will defeat the relatively slow recovery time of steel with a better f/d curve.

    PierreC
    Fresh Blood

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    I'm new to crossbows


    Fresh Blood Doesn't meanI'm new to crossbows

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    Re: Rat-Trap Springs

    Post by PierreC on Fri Aug 09, 2013 11:54 pm

    Part of why I want to put the springs into a module is so I can bolt up a generic lock and sear module, and mount the parts onto a chunk of unistrut or telspar.  Then I can re-configure from in-swinger to out-swinger, or put together a different prod or spring stack and compare the results.

    I'm going to have to build a ballistic pendulum...
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    Gnome
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    Re: Rat-Trap Springs

    Post by Gnome on Sat Aug 10, 2013 6:23 am

    This sounds interesting! Get started. Post pictures.
    Gnome

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