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» fix bolts
by chaz Yesterday at 2:27 pm

» Collotiere a Charavines crossbow
by stuckinthemud1 Thu Nov 19, 2020 1:00 pm

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» how to Build a non Chinese repeating crossbow?
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» Fascinating reconstruction
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» Cutting delrin straight by hand?
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» Anyone make their own bolts?
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» Cocking via moving the bow.
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by Phil Abrahams Fri Aug 28, 2020 9:20 am

» Stirrups, how heavy? Design help needed
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» ash lath and pin-lock crossbow
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» Finish on lashings
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» Look what the smith sent
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» Covid 19 and crossbow builders
by kenh Thu Jul 30, 2020 10:22 am

» Crossbow accuracy
by Geezer Thu Jul 30, 2020 7:51 am

» How do you feel about miniature crossbows?
by El Zurdo Wed Jul 29, 2020 7:21 am

» Just finished my windlass crossbow!
by Dennis Greenaway Tue Jul 28, 2020 4:01 pm

» Sinew backed crossbow prod tillering. Update and questions.
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» snakeskin not birch bark on composite bows in medieval period
by Cornerstone Mon Jul 27, 2020 3:50 pm

» two axle mechanism makers/accurate plans?
by stuckinthemud1 Wed Jul 22, 2020 10:34 am

» Stonebow Buildalong
by banuvatt Thu Jun 25, 2020 9:00 pm

» How to Attach a PVC Prod to a Stock?
by banuvatt Tue Jun 02, 2020 8:22 am

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» AMAZING MINI CROSSBOW code name KillCovid-19
by El Zurdo Thu May 21, 2020 3:14 am

» Draw length ash lath
by banuvatt Thu Apr 23, 2020 9:47 am


    Collotiere a Charavines crossbow

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    Post by stuckinthemud1 on Wed Oct 21, 2020 3:17 pm

    Evening!
    I'd like to make a replica of this crossbow and believe it is 110cm ttt and 3cm wide at centre (according to https://www.bourges1ere.fr/Archeologie.htm)

    Can anyone add to this, I really need thickness at centre, ideally, I could do with thickness at limb centre and at the nocks as well.

    Thanks in advance,
    Andrew
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    Post by stuckinthemud1 on Fri Oct 30, 2020 7:53 am

    So, this is what I have, probably enough for a decent replica but I would love the reasurance of accurate measurements and a front elevation.  I've contacted the museum but with France going into lockdown I think I'm going to have to be patient.

    Collotiere a Charavines crossbow  20201027_140110193840785044325239
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    Post by hullutiedemies on Fri Nov 06, 2020 2:13 am

    according to https://www.bourges1ere.fr/Archeologie.htm


    L'arbrier est en frêne et mesure 80 c de long par 3 cm de largeur.
    The tiller is of ash and 80cm long by 3 cm wide.


    L'arc est en orme et mesure 110 cm de long par 4 cm de largeur
    The bow is elm, 110 cm long and 4 cm wide.

    Draw weight of the featured replica is 54lbs.
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    Post by stuckinthemud1 on Fri Nov 06, 2020 12:38 pm

    Thank you for that, that's really useful, could I confirm if that is for the original artefact or for the modern reproduction?  I did not realise the original was elm rather tban yew. From what I can see in the photos, the modern repro looks like its nowhere near 3 or 4cm thick.
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    Post by Geezer on Sat Nov 07, 2020 11:16 am

    Elm makes sense for a bowstave: not as good as Yew perhaps, but the original craftsman probably didn't have a lot of choice.  To a great extent, I expect basic bows like the Charavines crossbow were made with what was available.  Keep up the good work!  DRW
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    Post by stuckinthemud1 on Sat Nov 07, 2020 4:15 pm

    Elm would be correct for the period, writing in the early 13th century Gerald of Wales records the Welsh wood of choice for bows was Wych Elm and I believe there were Elm longbows in the Mary Rose inventory.  Ironically if I have to use Elm its going to be more expensive and more difficult to source than Yew thanks to Dutch Elm Disease.
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    Post by Geezer on Sun Nov 08, 2020 11:56 am

    There's one of the problems of trying to replicate the original.  Do you try to get the identical materials in the original, or do you do what the original craftsman did, and use what is available in Your locale.  Either way could be considered authentic.  Here in Texas, a local craftsman would probably use bodark (Bois d'Arc) for the prod.  That's the best locally available wood for self-bows. Whatever floats your boat.  DRW
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    Post by stuckinthemud1 on Sun Nov 08, 2020 3:19 pm

    It might come to that, yew would also be correct for the period and would give a decent data set on draw weight and performance characteristics, maybe reducing thickness by 10% would be necessary.
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    Post by hullutiedemies on Tue Nov 17, 2020 3:04 am

    stuckinthemud1 wrote:From what I can see in the photos, the modern repro looks like its nowhere near 3 or 4cm thick.

    Wide. I do not really speak French, but my dictionary translates "largeur" as width or wideness.
    Thickness of the limbs seems to be about 1½ cm at bridling. Just comparing against the mentioned 3cm tiller top.
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    Post by stuckinthemud1 on Thu Nov 19, 2020 1:00 pm

    Thanks guys. I enlarged the image to A3 and scaled up the various measurements, arriving at, 4cm thickness at centre from back to belly with the back being 3cm wide.

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