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

Latest topics

» Bullpup light crossbow
by actionbow Today at 12:16 am

» Making a wooden prod
by stuckinthemud1 Fri Dec 14, 2018 9:28 am

» 'mastic' in medieval crossbow decoration - what is it?
by kenh Thu Dec 06, 2018 5:51 pm

» Welcome! Welcome! Welcome!
by kenh Sun Dec 02, 2018 7:57 pm

» Geezers finnish crossbows?
by Geezer Tue Nov 27, 2018 7:50 am

» Miniature Cross Bows.
by stuckinthemud1 Sun Nov 25, 2018 1:35 pm

» My first Crossbow Tell me what you think!
by kenh Mon Nov 19, 2018 5:50 am

» G/Day from Queensland Australia
by Andy. Thu Nov 08, 2018 3:15 am

» Here I go, overthinking again
by stuckinthemud1 Wed Nov 07, 2018 10:15 am

» What string material is safe for Alchem Steel prods
by c sitas Sat Nov 03, 2018 10:13 am

» what's the best glue
by kenh Thu Nov 01, 2018 1:51 pm

» Finished Crossbow - Thanks to all - here some pic and if anyone wants info let me know happy to help .
by Gnome Mon Oct 29, 2018 6:08 pm

» Advice needed re test rig?
by stuckinthemud1 Wed Oct 24, 2018 1:55 am

» yew and sinew prod help needed
by stuckinthemud1 Sat Oct 06, 2018 4:40 pm

» Ball shooting Crossbows worth the bother
by Seventeen76 Wed Oct 03, 2018 10:59 pm

» Crusader crossbow
by stuckinthemud1 Fri Sep 28, 2018 1:54 pm

» Plans and materials for my first build
by chilihook Mon Sep 24, 2018 11:53 am

» carving on early crossbows
by stuckinthemud1 Sun Sep 23, 2018 10:32 am

» invisible joints in bone spine-inlay
by Geezer Wed Sep 19, 2018 12:43 pm

» My 2nd crossbow project - german crossbow with cranequin
by MePilot1 Mon Sep 17, 2018 6:44 am

» Getting the best accuracy from a crossbow
by dutchbow Fri Sep 14, 2018 1:45 am

» Pictures of crossbow I have been build
by chaz Thu Sep 13, 2018 2:02 pm

» Sharp bend in the tickler
by Geezer Tue Sep 11, 2018 3:11 pm

» Bolt weight to prod poundage
by Geezer Mon Sep 03, 2018 7:10 pm

» Commecial slingshot crossbow
by chaz Wed Aug 29, 2018 1:20 pm


    Minimum bolt weight steel prod

    Share

    Armymedic.2
    Techno Weeny

    Lets put a laser on it!!!


    Techno WeenyLets put a laser on it!!!

    Posts : 57
    Join date : 2014-10-21

    Minimum bolt weight steel prod

    Post by Armymedic.2 on Sun Nov 06, 2016 6:59 am

    Hello all
    Ive been shooting my medieval xbow for a year now with bolts made from dowels.  And i just made up some really nice looking bolts from some 11/32 shafting i had laying around.    But even after putting a nail in the end of the shaft for extra weight with epoxy they are coming out at 360 grains average

    The prod is from slow bows # 150-190

    My dowel bolts end up at 415 grains or so and fly great    But the lesser weight makes me nervous about the dry fire effect

    So before i shoot them
    Is 360 grains heavy enough for the steel limbs or am i looking for trouble?

    Thanks in advance!
    Keith

    Also ps for those lurking looking for info
    The 415 grain bolts with single bevel steel broadheads i forge have passed through both deer. I have shot with it.    Plenty of power
    One at 15 yards. 
    One at 10
    Both double lung.   Both buried into the dirt after
    avatar
    Gnome
    Crossbow Junkie

    I live here!


    Crossbow JunkieI live here!

    Posts : 411
    Join date : 2011-10-16
    Age : 54
    Location : North Georgia

    Re: Minimum bolt weight steel prod

    Post by Gnome on Fri Nov 18, 2016 8:37 am

    Wow the forum is quiet! Hard to believe your question has gone almost two weeks without anyone weighing in. Wish I had an answer for you. I've experimented a bit, but I come at it the question from the other side- I want to know how heavy a bolt I can use with a steel prod without it slowing too much, not how light I can go without overstressing the weapon. I know there's a ratio for optimum projectile weight to the physical weight of the prod, not the draw weight, but I don't remember what it is- 1/12, maybe? I know it's on at least one thread on this forum, if you find it you could use that as a base point.
    Great to hear of your hunting success. The hunters that I meet at the range, zeroing in the sights on their modern compound crossbows, admire the craftsmanship of the steel prod weapons I've built, but do not consider them to be realistic hunting tools.
    Gnome
    avatar
    Geezer
    Master Crossbowyer
    Master Crossbowyer

    Posts : 1068
    Join date : 2010-01-12
    Age : 70
    Location : Austin, Texas, USA

    Re: Minimum bolt weight steel prod

    Post by Geezer on Fri Nov 18, 2016 8:55 am

    As I recall, Egon Harmuth suggested your bolt should weigh 1/60th the weight of a steel prod (not draw weight, but actual prod weight) wood or composite prods might be different... they're generally lighter for power produced.

    Geezer.
    avatar
    Gnome
    Crossbow Junkie

    I live here!


    Crossbow JunkieI live here!

    Posts : 411
    Join date : 2011-10-16
    Age : 54
    Location : North Georgia

    Re: Minimum bolt weight steel prod

    Post by Gnome on Fri Nov 18, 2016 9:33 am

    1/12th, 1/60th, yeah, somewhere in that ballpark, LOL

    Armymedic
    Fresh Blood

    Doesn't mean
    I'm new to crossbows


    Fresh Blood Doesn't meanI'm new to crossbows

    Posts : 1
    Join date : 2016-11-18

    Re: Minimum bolt weight steel prod

    Post by Armymedic on Fri Nov 18, 2016 5:01 pm

    Thanks guys.   yeah sure is quiet here!

    Just last night i decided to just try it, and they fly fantastic.   notably faster than my thicker bolts, but i wuld say they are not faster than 200 fps    maybe just at it.   ill chrono another time when i have sunlight to work with

    i fixed some judos on them and went out today, after putting a new stone bow style sight on. 

    the squirrels werent out much but i did manage to down one.    the new bolts proved too fast for them to dodge.  what great fun!   a nice appetizer is int he fridge now :}

    fyi i also tied on some full height turkey feathers to try as flu flus      it did work....  they only go about 2/3 as far as my normal fletching.  but they ended up getting lost in the woods anyway.   haha

    with the judo points on i fired two up at an angle, and paced it off at 210 yards flight.   i imagine a bit further with a field point.

    fun stuff    thanks for responding guys

    Sponsored content

    Re: Minimum bolt weight steel prod

    Post by Sponsored content


      Current date/time is Sun Dec 16, 2018 9:22 am