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

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» 12th Century Chinese Crossbow Chronographed
by stuckinthemud1 Fri Nov 24, 2023 3:50 pm

» Crossbow Stock
by kenh Tue Oct 31, 2023 6:19 am

» Colletiere a Charavines continuing experiment
by stuckinthemud1 Sat Oct 07, 2023 5:36 am

» Cocking - how
by stuckinthemud1 Thu Aug 03, 2023 4:24 am

» Questions around heavy crossbow lath buildin
by stuckinthemud1 Wed Apr 26, 2023 1:10 am

» Arab Crossbow
by stuckinthemud1 Tue Apr 25, 2023 7:57 am

» prod angle, and lever trigger for sale anyone?
by stuckinthemud1 Mon Mar 20, 2023 5:54 am

» flexible string
by jasper1978 Mon Mar 20, 2023 1:25 am

» [solved]Skane/Lillohus crossbow thread
by stuckinthemud1 Sun Mar 19, 2023 7:44 am

» jens sensfelder
by jasper1978 Wed Mar 08, 2023 11:58 pm

» 400lb Windlass crossbow bolts weight and accuracy shooting high.
by stuckinthemud1 Sun Mar 05, 2023 2:53 pm

» Codex Löffelholz crossbow
by stuckinthemud1 Tue Jan 24, 2023 4:14 pm

» Digitar prodsc
by stuckinthemud1 Sun Jan 15, 2023 2:42 pm

» Troubleshooting
by Andy. Fri Jan 06, 2023 12:29 pm

» Wood Prods
by stuckinthemud1 Fri Dec 30, 2022 12:47 pm

» Colletiere a Charavines crossbow
by stuckinthemud1 Fri Dec 30, 2022 8:54 am

» Simplified Löffelhotz speedloader
by stuckinthemud1 Fri Dec 09, 2022 4:05 pm

» 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

» 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


3 posters

    flexible string

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    jasper1978
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    flexible string Empty flexible string

    Post by jasper1978 Sat Mar 18, 2023 1:42 am

    Hi, 
    the prod i am getting has a 9 inch draw. the look i want for my crossbow would preferably have a larger draw. are there any string types which can make the draw longer? so with any elasticity in them, like a rubbery core or something?
    kenh
    kenh
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    flexible string Empty Re: flexible string

    Post by kenh Sat Mar 18, 2023 2:17 pm

    Rubber-cored strings just wouldn't work except in a slingshot rather than a crossbow.   Is this for a LARP, or real-world crossbow?

    Generally we don't design and build crossbows for the "look" at full cock, but for optimum draw weight and overall functionality.  

    Prod size, shape and draw weight are basic determinants for draw length.  A longer, lighter draw weight prod might work for you.  A prod with designed-in deflex could have a longer draw.  Or a prod made of something like solid fiberglass or wood-fiberglass composite (similar to a vertical bow) rather than steel.   

     I used solid fiberglass fence bars 1/4" x 3/4" to make the 2-bar loose-laminate that prod you see on my avatar bow.  That prod, with stacked 28" and 18" bars, has a 4" brace height and 14" draw from the prod to the trigger, with a draw weight in excess of #250.  A single bar might have an 20" or more draw, but perhaps only #80-100 draw weight.
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    stuckinthemud1
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    flexible string Empty Re: flexible string

    Post by stuckinthemud1 Sun Mar 19, 2023 3:10 pm

    Hi Jasper.
    The rule of proportion for late gothic crossbows was length of tiller is same as length of string, assuming you are after a correct medieval look
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    jasper1978
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    Post by jasper1978 Mon Mar 20, 2023 1:25 am

    hi, i am not after an authentic look, i am giving it my own twist., but thanks anyway for the info

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