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

Latest topics

» New member here!
by Cscott Today at 12:41 pm

» Its good to be back!!
by Juan galeano Thu Mar 23, 2017 1:32 pm

» Split limb and Draw length
by c sitas Mon Mar 20, 2017 8:25 pm

» Starting a New One
by c sitas Sun Mar 19, 2017 5:24 pm

» H L Bailey Plans
by ora8i Sat Mar 18, 2017 9:45 am

» Compact repeating compound project
by Crossbowmen Fri Mar 17, 2017 3:36 am

» Medieval Crossbow Shooting video
by Onager Lovac Thu Mar 16, 2017 3:32 pm

» First submission
by War Song Thu Mar 16, 2017 1:25 pm

» GLOSSARY OF TERMS
by FrenckBrambo Mon Mar 13, 2017 6:30 am

» PVC pipe prod: Normal or loose laminate?
by kenh Sat Mar 11, 2017 11:11 am

» Modern 3-finned bolts in medieval style crossbows?
by c sitas Fri Mar 10, 2017 3:32 pm

» failure with a fiberglass tension bar loose laminate prod
by War Song Thu Mar 09, 2017 8:52 pm

» How to make crossbow tiller
by War Song Wed Mar 08, 2017 7:04 pm

» WTB: Medeival type crossbow
by kenh Wed Mar 08, 2017 1:18 pm

» Berkhamsted Castle and Glasgow Museum wooden prod crossbow
by OrienM Sun Mar 05, 2017 8:38 am

» How to measure and cut leather for prod
by Geezer Fri Mar 03, 2017 4:26 pm

» Prod construction
by OrienM Thu Mar 02, 2017 12:34 pm

» New compound crossbow build
by FrenckBrambo Tue Feb 28, 2017 3:17 pm

» Accuracy of the Claplock versus Rollernut
by FrenckBrambo Tue Feb 28, 2017 2:51 pm

» Heavy German sporting crossbow build
by Crossbowmen Tue Feb 28, 2017 2:06 pm

» Finished Crossbow
by OrienM Sat Feb 25, 2017 9:14 am

» Fixing a bad delflex
by Daniel Levesque Thu Feb 23, 2017 9:52 am

» First Time Crossbow Building Questions
by c sitas Wed Feb 22, 2017 8:50 pm

» Restoration
by c sitas Tue Feb 21, 2017 7:58 am

» Why did George Stevens glue a layer of linen to the prod and then wrap the prod in black tape?
by Geezer Sun Feb 19, 2017 8:31 pm


    Historical prod weights for 15th-16th Century Field Crossbows?

    Share

    The Lone Lemming
    Fresh Blood

    Doesn't mean
    I'm new to crossbows


    Fresh Blood Doesn't meanI'm new to crossbows

    Posts : 3
    Join date : 2015-04-26

    Historical prod weights for 15th-16th Century Field Crossbows?

    Post by The Lone Lemming on Sun Apr 26, 2015 6:24 pm

    Hi there all.  I am looking for info on typical poundage ranges for 15th and 16th century field (rather than siege) crossbows, and more specifically, a cut-off range for the use of complex mechanical assisted spanning (rather than simple, i.e. goat's foot or belt hooks).

    Right now, have arrived at around 380#-400# @ 11.5" as the top-end for what would be spannable with a GF or belt hooks.  Am I pretty close, or way off?

    Much obliged for the info.

    phuphuphnik
    Workshop Savvy

    Did you see my tool collection?


    Workshop SavvyDid you see my tool collection?

    Posts : 146
    Join date : 2013-12-02
    Location : The wastes West of Chicago

    Re: Historical prod weights for 15th-16th Century Field Crossbows?

    Post by phuphuphnik on Sun Apr 26, 2015 6:50 pm

    I am in the process of making a spanning device for my 250# 11" draw bow. It is a bugger. While I believe that the 400# bows could be spanned with a belt, it was by burlyer men than I. I will be using a belt with a pulley, to get the felt weight down to about 150#. I can almost get it with a goat's foot, but I didn't make it long enough.

    Try this:
    https://www.youtube.com/watch?v=j_ovVTHpgLg

    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: Historical prod weights for 15th-16th Century Field Crossbows?

    Post by Rizzar on Sun Apr 26, 2015 11:11 pm

    Hey and welcome!

    When considering higher forces in later centuries remember draw length reduced a lot.

    Leverage/transmission is very important, which is rather difficult to master with long drawing distances.

    If you are at your personal limit to use a normal sized GF (though really long ones could handle a lot of force) consider this to be a good point to improve either to belt/pulley or cranequin/windlass.

    Cranequin/Windlass are not designed to do high draw lengths either.

    Greetings Rizzar

    c sitas
    Crossbow Junkie

    I live here!


    Crossbow JunkieI live here!

    Posts : 379
    Join date : 2012-11-24

    Re: Historical prod weights for 15th-16th Century Field Crossbows?

    Post by c sitas on Mon Apr 27, 2015 11:28 am

    Hello Rizzar; I have played around with what I would call a block and tackle winch. Seems by blocking you can get quite a length for pull, and also ease of pull. I have my own homemade with a 17" draw lenght.

    The Lone Lemming
    Fresh Blood

    Doesn't mean
    I'm new to crossbows


    Fresh Blood Doesn't meanI'm new to crossbows

    Posts : 3
    Join date : 2015-04-26

    Re: Historical prod weights for 15th-16th Century Field Crossbows?

    Post by The Lone Lemming on Mon Apr 27, 2015 12:31 pm

    Phu, thanks for the pointers!  The video was quite interesting.  Are there any plans for creating that system?

    phuphuphnik
    Workshop Savvy

    Did you see my tool collection?


    Workshop SavvyDid you see my tool collection?

    Posts : 146
    Join date : 2013-12-02
    Location : The wastes West of Chicago

    Re: Historical prod weights for 15th-16th Century Field Crossbows?

    Post by phuphuphnik on Fri May 01, 2015 2:40 pm

    I just have to fire up the forge to punch the axle holes and I'll have a belt spanning jig. I made a goat's foot lever, but it is too short. I'll make another soon. Turns out with the right jig they are easy to make, getting both ends to be the same shape and smooth is the learning curve part. I made one master end, that I use as a template when hammering the taper. I could saw it out, but it looks much better being all forged. A larger anvil would help too.

    c sitas
    Crossbow Junkie

    I live here!


    Crossbow JunkieI live here!

    Posts : 379
    Join date : 2012-11-24

    Re: Historical prod weights for 15th-16th Century Field Crossbows?

    Post by c sitas on Fri May 01, 2015 3:40 pm

    Hey phuphuphnik; you could cheat. Saw it out , and heat it up just put you dents all over,he,he.It would be so real looking you couldn't even tell.
    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: Historical prod weights for 15th-16th Century Field Crossbows?

    Post by Armbrustier on Sun May 03, 2015 7:24 am

    Just remember guys, that the anchoring method at the end of the crossbow tiller that Tod uses in the video for his belt and pulley system seems to be something that he has created himself, I have at least never seen that in any illustrations.

    Sponsored content

    Re: Historical prod weights for 15th-16th Century Field Crossbows?

    Post by Sponsored content


      Current date/time is Sat Mar 25, 2017 1:39 pm