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

Latest topics

» New crossbow builder
by wjbates1430 Yesterday at 2:10 pm

» Medieval bowyer
by kenh Yesterday at 1:36 pm

» Airsoft Crossbow-Finished at Last!
by JacobL Thu Oct 12, 2017 7:27 pm

» Powermaster Madness
by c sitas Wed Sep 27, 2017 8:41 am

» Powermaster
by c sitas Wed Sep 20, 2017 9:58 am

» Best wood for a novice?
by Geezer Sun Sep 17, 2017 9:21 am

» Adding a steel sear insert?
by Geezer Fri Sep 15, 2017 7:13 am

» Great Machines
by c sitas Sat Sep 09, 2017 5:39 pm

» Medieval Crossbow Bolts DIY Question
by Rumburak Thu Sep 07, 2017 12:17 pm

» Berkhamsted Castle and Glasgow Museum wooden prod crossbow
by Juniper Fri Aug 25, 2017 3:54 pm

» Beware of Alchem
by Archer46176 Mon Aug 21, 2017 3:33 pm

» How to measure and cut leather for prod
by Celtic Archer Sun Aug 20, 2017 5:56 pm

» Crossbow with built in lever?
by John Edgerton Thu Aug 17, 2017 12:38 pm

» Of Bows and Torsion Engines
by JacobL Mon Aug 14, 2017 12:03 pm

» Early Lever and pin Crossbow
by topfmine Mon Aug 14, 2017 8:56 am

» Crusader crossbow
by topfmine Mon Aug 14, 2017 8:53 am

» First Efforts
by rickraedeke Tue Aug 08, 2017 5:25 am

» aluminum prod
by Phil Abrahams Fri Aug 04, 2017 8:38 am

» First whitetail buck taken with medieval crossbow
by Phil Abrahams Fri Aug 04, 2017 3:38 am

» Airsoft Crossbow
by JacobL Wed Aug 02, 2017 9:11 pm

» Questions about steel prod specs
by JacobL Mon Jul 31, 2017 8:25 pm

» Faking a medieval composite crossbow prod.
by JacobL Mon Jul 31, 2017 8:13 pm

» Airsoft Bow
by JacobL Sun Jul 30, 2017 1:56 pm

» Hello All!
by JacobL Sun Jul 30, 2017 12:54 pm

» Padre Island Bow
by Geezer Wed Jul 26, 2017 12:14 pm


    Slack-strung prods?

    Share
    avatar
    kenh
    Crossbow Junkie

    I live here!


    Crossbow JunkieI live here!

    Posts : 733
    Join date : 2012-08-03
    Age : 69
    Location : Living Aboard a Sailboat in Fort Myers, FL

    Slack-strung prods?

    Post by kenh on Wed Sep 05, 2012 2:49 pm

    looking around the 'net at photos of crossbows in museums, I see a huge number with the strings stretched from nock to nock but the prod is not under tension. Were early/heavy bows normally slack-strung like the one in this picture?

    http://i30.servimg.com/u/f30/17/70/58/16/slack_10.jpg
    avatar
    Todd the archer
    Crossbow Junkie

    I live here!


    Crossbow JunkieI live here!

    Posts : 581
    Join date : 2010-02-25
    Age : 55
    Location : sellersville,pa.

    Re: Slack-strung prods?

    Post by Todd the archer on Wed Sep 05, 2012 3:42 pm

    I am thinking there should be some tension on the string or else the recoil will tear up the bow even to the point of breaking. Quite common in all wood bows if the string broke the bow would break as well, not as common with modern materials but still a danger. An all steel bow might be imune but would most likely have a lot of recoil and shock.

    The reason for the slack strings is probally due to constant stain and time.

    Geezer may see this and add his insight.

    Todd
    avatar
    mac
    Master Weaponsmith
    Master Weaponsmith

    Posts : 560
    Join date : 2010-12-23
    Location : Near Philly USA

    Re: Slack-strung prods?

    Post by mac on Wed Sep 05, 2012 6:48 pm

    Kenh,

    I would be very surprised if any bows were intended to have slack strings.

    It seems most likely to me that what we are seeing is the result of the curators wanting to see some sort of string on the bow, but the conservators being unwilling to flex the bow sufficiently to install a string of the correct length.

    Mac
    avatar
    Geezer
    Master Crossbowyer
    Master Crossbowyer

    Posts : 959
    Join date : 2010-01-12
    Age : 69
    Location : Austin, Texas, USA

    Re: Slack-strung prods?

    Post by Geezer on Wed Sep 05, 2012 7:06 pm

    The official Geezer position on slack strings: Museum convenience, or stretched-out old strings. You'd get absolutely no power from a slack string. If you DID get any power, the string would fly downrange after the bolt.
    Remember, you'll also see roller-nuts installed backwards in some museums as well (I recall one in the Tower of London, years ago, and another in the Kunstistorisches Museum in Vienna.) That doesn't mean they'll work that way!
    avatar
    kenh
    Crossbow Junkie

    I live here!


    Crossbow JunkieI live here!

    Posts : 733
    Join date : 2012-08-03
    Age : 69
    Location : Living Aboard a Sailboat in Fort Myers, FL

    Re: Slack-strung prods?

    Post by kenh on Wed Sep 05, 2012 7:17 pm

    I wondered about the curator thing too. Makes more sense than slack strung. I do seem to remember Montagnard crossbows as being nearly slack-strung; or maybe, as you say, it was just the "bamboo binder twine" strings slacking from use. They sure could drive a bamboo bolt for short distances though...
    avatar
    olrono
    Techno Weeny

    Lets put a laser on it!!!


    Techno WeenyLets put a laser on it!!!

    Posts : 54
    Join date : 2011-05-11

    Re: Slack-strung prods?

    Post by olrono on Thu Sep 06, 2012 5:38 pm

    Could it be the museum just didn't want to take a chance arching a five hundred year old composite bow to display how it should really look when right? I mean I used to think people would like to display their crossbows too, so much for my thinking... Rolling Eyes

    Rizzar
    Workshop Savvy

    Did you see my tool collection?


    Workshop SavvyDid you see my tool collection?

    Posts : 192
    Join date : 2012-08-11
    Location : Germany

    Re: Slack-strung prods?

    Post by Rizzar on Thu Sep 06, 2012 10:19 pm

    I think there could be different reasons:

    But the most significant would be the security/presentation thing, I wouldn´t dare to span/string a xhundret year old crossbow for longer time either. Chances for destroying cultural artifacts are much too high. So a slak string is better than none, people need to see something to get better imagination.

    Second aspect could be mistake. Wrong string, wrong measurements when replacing a damaged or missing string. (working in a museum and reconstructing a crossbow doesn´t neccessarily mean to be a crossbow specialist, consider the small pic on that site (thank god it is fixed) http://www.historiavivens1300.at/realien/armbrust1.htm)
    avatar
    olrono
    Techno Weeny

    Lets put a laser on it!!!


    Techno WeenyLets put a laser on it!!!

    Posts : 54
    Join date : 2011-05-11

    Re: Slack-strung prods?

    Post by olrono on Thu Sep 06, 2012 10:56 pm

    Rizzar wrote:I think there could be different reasons:

    But the most significant would be the security/presentation thing, I wouldn´t dare to span/string a xhundret year old crossbow for longer time either. Chances for destroying cultural artifacts are much too high. So a slak string is better than none, people need to see something to get better imagination.

    Second aspect could be mistake. Wrong string, wrong measurements when replacing a damaged or missing string. (working in a museum and reconstructing a crossbow doesn´t neccessarily mean to be a crossbow specialist, consider the small pic on that site (thank god it is fixed) http://www.historiavivens1300.at/realien/armbrust1.htm)

    Thanks "Rizz", Glad some one agrees with me on this. But I didn't understand your second point. Then you commented "thank god it is fixed".
    Like our resident expert here Geezer has said many times... " the museum people don't always know how these things go together". Is that what you mean? In the smaller picture of the "same crossbow" it looks as the bow is put on backwards? For the 'festmeal' (what ever Geezer calls it) looks too great, and the string notches are turned the wrong way. This shows that even crossbows can be gotten disassembled when discovered and reassembled wrong before displayed in the museums.

    Rizzar
    Workshop Savvy

    Did you see my tool collection?


    Workshop SavvyDid you see my tool collection?

    Posts : 192
    Join date : 2012-08-11
    Location : Germany

    Re: Slack-strung prods?

    Post by Rizzar on Thu Sep 06, 2012 11:44 pm

    I just wanted to point out mistakes made by restaurateurs. The link shows two pictures of the same crossbow. The prod was bound wrong direction for longer time,I am glad they fixed it. ("thank god it is fixed")
    avatar
    Armbrustier
    Fresh Blood

    Doesn't mean
    I'm new to crossbows


    Fresh Blood Doesn't meanI'm new to crossbows

    Posts : 29
    Join date : 2012-01-23

    Re: Slack-strung prods?

    Post by Armbrustier on Fri Sep 07, 2012 4:07 am

    Rizzar wrote: The link shows two pictures of the same crossbow. The prod was bound wrong direction for longer time,I am glad they fixed it.
    Not exactly true, as the left one is a copy of the right one. The copy was made by the Austrian master builder Andreas Bichler.
    But I agree that the right one is now corrected at the museum in Köln (Cologne).

    Rizzar
    Workshop Savvy

    Did you see my tool collection?


    Workshop SavvyDid you see my tool collection?

    Posts : 192
    Join date : 2012-08-11
    Location : Germany

    Re: Slack-strung prods?

    Post by Rizzar on Fri Sep 07, 2012 4:28 am

    Ahhh, thank you. I was in fact in a hurry this morning when posting.
    I searched for the wrong bound picture and was surprised to see a fixed one, I didn´t realised it was a rebuild one.

    But i am glad they fixed the original, too.
    Very Happy

    Sponsored content

    Re: Slack-strung prods?

    Post by Sponsored content


      Current date/time is Wed Oct 18, 2017 5:19 am