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

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» Troubleshooting
by stuckinthemud1 Sat Oct 01, 2022 3:08 pm

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

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

» Collotiere a Charavines crossbow
by stuckinthemud1 Sat Jul 23, 2022 5:45 am

» Bad Antler
by stuckinthemud1 Tue Jun 28, 2022 8:09 am

» 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

» Josef alm in English
by stuckinthemud1 Fri Jan 14, 2022 3:07 pm

» 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

» 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


3 posters

    "Pulleys" out of dyneema

    hullutiedemies
    hullutiedemies
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    "Pulleys" out of dyneema Empty "Pulleys" out of dyneema

    Post by hullutiedemies Tue Aug 06, 2013 1:01 pm

    Recently bought a roll of B70 dyneema fishing line, to test for bow strings.
    I soon noticed that it was allmost impossible to get a knot hold on these. There is practically no friction when rubbing dyneema on dyneema.
    So it was quite logical to see how this does as bearing surface.

    I assembled a quick ming-style doublebow from an unfinished project.

    It shoots about as quickly as any compound. Pulling only 15kg/26cm stroke ( <20J ) puts a blunt 4mm wide 2gram stick about 1cm into dry conifer board - about as good as a reasobnably powerful target air rifle. So efficiency seems good.

    Here is the "pulley"
    "Pulleys" out of dyneema J_dyneeming

    After a few shots and lots of work out draws does not yet show any sign of wear.
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    kenh
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    "Pulleys" out of dyneema Empty Re: "Pulleys" out of dyneema

    Post by kenh Tue Aug 06, 2013 5:38 pm

    Neat!  So what magic knot did you use that finally would stay knotted?
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    "Pulleys" out of dyneema Empty Re: "Pulleys" out of dyneema

    Post by hullutiedemies Wed Aug 07, 2013 4:40 am

    I melted the tips of the thread with lighter. So tese became small lumps of plastic. And then pulled the knots open from inside until they would slide and catch the stopper lumps.
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    "Pulleys" out of dyneema Empty Re: "Pulleys" out of dyneema

    Post by kenh Thu Aug 08, 2013 7:58 am

    Ah so deska!  I know that technique.
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    "Pulleys" out of dyneema Empty Re: "Pulleys" out of dyneema

    Post by Oppenheimer Sat Aug 10, 2013 1:34 am

    Sorry. I don´t understand how the bow works. (compound?) Is it OK for you Nerd F to show a bigger picture? Especialy on the sling-setup. Where is the sliding knots?

    Can it be like this from the video you posted? http://video.baomihua.com/11240671/15674075?ab01
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    "Pulleys" out of dyneema Empty Re: "Pulleys" out of dyneema

    Post by kenh Sat Aug 10, 2013 1:52 pm

    There's a great discussion of Nerd's Paleo-legal Compound bow here:

    https://thearbalistguild.forumotion.com/t689-paleo-legal-compound?highlight=paleo+legal

    and that's the bow being referenced.  He's replacing the whole toggle lever setup with loops of dyneema....
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    kenh
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    "Pulleys" out of dyneema Empty Re: "Pulleys" out of dyneema

    Post by kenh Sat Aug 10, 2013 1:58 pm

    There's a great discussion of Nerd's Paleo-legal Compound bow here:

    https://thearbalistguild.forumotion.com/t689-paleo-legal-compound?highlight=paleo+legal

    and that's the bow being referenced.  He's replacing the whole toggle lever setup with loops of dyneema....

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    "Pulleys" out of dyneema Empty Re: "Pulleys" out of dyneema

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