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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
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» 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


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    Euell
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    Post by Euell Sat Feb 14, 2015 9:38 pm

    New to the site sorry for posting in the wrong place, learning the rope.
    Euell
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    phuphuphnik
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    Post by phuphuphnik Sun Feb 15, 2015 6:18 am

    I'll answer your question here then. On the RDT thread Hermit posted this:
    Hermit wrote:Regarding the crossbow string,years ago,when I got into making mine,there was a simple formula which I used and which worked well.Take the bow draw weight(as an example 200lbs.)multiply that by 4(the safety factor)then divide that number by the breaking strain of the string material.Dacron is I believe 50lbs. per strand.Using this formula gives a string thickness of 16 strands.When the string is made,it should be well coated with beeswax.this was done by rubbing the beeswax onto the string,and then rubbing the string with a piece of leather.The friction of the leather on the string creates heat,which melted the beeswax into the string.String maintainance is important if you want to get good service from your string.When you have been using the bow for a while,you should be able to tell from the look of the string when it needs re-waxing,or a good rub to re-melt the beeswax.
                                
                                                        Hermit.
    I don't know how to figure the length of string needed. I buy my first string and measure it. That way I know the strands, serving length and length to go with that prod. It is an extra $20 but it works for me.
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    Post by Hermit Sun Feb 15, 2015 11:25 am

    Euell,regarding string length,are you intending to buy a prod?,if you are the prod manufacturer or seller will usually be able to sell you a string.If not they can  tell you the string length required.If you intend to make your own string,then you need the brace height(or fistmele)of the bow.When you have that you can string the bow with a bastard string and a homemade fixture until the brace height is obtained.Measuring between the tips of the bow will give the string length.
                                                              Hermit.
    Euell
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    Post by Euell Tue Feb 17, 2015 8:10 pm

    Say Hermit thanks for the info on the prod,and string. Where I downloaded the the plans to the crossbow, I'll be ordering the prod,string,roller nut,trigger, and stirrup from them.
    Euell

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