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

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» finish prod binding
by kenh Tue Nov 30, 2021 5:26 am

» What bolts do you use?
by hullutiedemies Mon Nov 22, 2021 9:43 am

» reinforcement Pin
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» Ball shooting Crossbows worth the bother
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» New Medieval just about finished
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» 3D file medieval crossbow tiller
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» Ancient Crossbow Reproduction 120lb@28"
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» tiller desgin
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» Want to build modern target crossbow
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» starting a 1400's replica
by tghsmith Wed Aug 11, 2021 10:25 am

» How do I tune this
by stuckinthemud1 Sun Jul 25, 2021 3:14 am

» Plans and materials for my first build
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» Bolt rest
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» Collotiere a Charavines crossbow
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» ash lath and pin-lock crossbow
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» Cutting delrin straight by hand?
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» Other forums like this one?
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» Crossbow Books
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» 95lb ancient crossbow shot faster than 960lb medieval
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» best type of horn to use..
by kenh Tue Mar 09, 2021 3:16 pm

» re-introduction
by tghsmith Sun Mar 07, 2021 3:15 pm


3 posters

    Rat-Trap Springs

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    PierreC
    Fresh Blood

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    I'm new to crossbows


    Fresh Blood Doesn't meanI'm new to crossbows


    Posts : 34
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    Rat-Trap Springs Empty Rat-Trap Springs

    Post by PierreC 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.
    actionbow
    actionbow
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    Rat-Trap Springs Empty Re: Rat-Trap Springs

    Post by actionbow 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.
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    PierreC
    Fresh Blood

    Doesn't mean
    I'm new to crossbows


    Fresh Blood Doesn't meanI'm new to crossbows


    Posts : 34
    Join date : 2013-07-26

    Rat-Trap Springs Empty Re: Rat-Trap Springs

    Post by PierreC 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...
    Gnome
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    Rat-Trap Springs Empty Re: Rat-Trap Springs

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

    This sounds interesting! Get started. Post pictures.
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