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

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» Troubleshooting
by Cscott Tue Nov 15, 2022 11:55 am

» Fiberglass H-bows
by c sitas Sat Nov 12, 2022 8:44 am

» Bad Antler
by drawknife Sat Nov 12, 2022 3:48 am

» Anyone make their own bolts?
by Juniper Mon Oct 17, 2022 8:20 am

» Colletiere a Charavines crossbow
by stuckinthemud1 Sun Oct 16, 2022 3:39 pm

» Josef alm in English
by Juniper Sat Oct 15, 2022 4:22 am

» Qin/Han lock drawings
by kenh Fri Sep 23, 2022 8:16 pm

» stirrup dimensions?
by stuckinthemud1 Thu Sep 01, 2022 1:49 pm

» Skane/Lillohus lockbow information needed
by stuckinthemud1 Sun Aug 14, 2022 6:23 am

» need help contacting le musee Dauphinois Grenoble
by stuckinthemud1 Sat Aug 13, 2022 3:22 pm

» Low Draw Weight Build
by stuckinthemud1 Fri Aug 12, 2022 3:09 pm

» Trigger testing Rig/Jig?
by ora8i Fri Aug 12, 2022 1:13 pm

» best type of horn to use..
by stuckinthemud1 Fri Jun 24, 2022 6:13 am

» Han Dynasty Chinese Crossbow
by hullutiedemies Fri Jun 17, 2022 1:00 pm

» Drawing of Crossbow
by stuckinthemud1 Fri Jun 03, 2022 3:01 am

» "How To Make Everything": Early Crossbow
by stuckinthemud1 Thu Jun 02, 2022 3:41 am

» Black inlay
by stuckinthemud1 Fri May 13, 2022 3:18 pm

» Roller nut details
by drawknife Thu Apr 21, 2022 2:44 pm

» 330#/7" wood bow
by Anatine Duo Tue Mar 29, 2022 11:08 am

» starting a 1400's replica
by stuckinthemud1 Thu Feb 24, 2022 1:26 pm

» 18th century German crossbow reproduction
by Fangbows Sun Feb 20, 2022 7:15 am

» replacement for baleen?
by tghsmith Mon Jan 17, 2022 9:30 am

» Medieval crossbow finished
by stuckinthemud1 Wed Jan 12, 2022 3:05 pm

» Trigger mechanisms
by stuckinthemud1 Mon Jan 03, 2022 10:23 am

» Finish wooden stock
by stuckinthemud1 Sat Dec 25, 2021 9:06 am


3 posters

    Rat-Trap Springs

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    PierreC
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    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
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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

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    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...
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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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