The Arbalist Guild

Would you like to react to this message? Create an account in a few clicks or log in to continue.

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

Latest topics

» Look what the smith sent
by stuckinthemud1 Fri Jul 31, 2020 1:35 pm

» 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

» Claw crossbow prototype
by Dennis Greenaway Tue Jul 28, 2020 10:34 pm

» how to Build a non Chinese repeating crossbow?
by Dennis Greenaway Tue Jul 28, 2020 4:05 pm

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

» Sinew backed crossbow prod tillering. Update and questions.
by stuckinthemud1 Tue Jul 28, 2020 2:43 am

» 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

» Anyone make their own bolts?
by MPDVM Tue Jul 07, 2020 11:14 pm

» ash lath and pin-lock crossbow
by stuckinthemud1 Sat Jul 04, 2020 2:42 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

» finally started my first composite bow
by stuckinthemud1 Fri May 29, 2020 12:40 am

» 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

» Would like to buy or rent a Han Chinese Trigger
by PierreC Thu Apr 23, 2020 2:37 am

» High Draw Weight PVC Crossbow Build
by banuvatt Fri Apr 17, 2020 3:07 pm

» Universal standard Crossbow nut
by Fangbows Tue Apr 14, 2020 11:57 pm

» Making Chinese 240lb Han Crossbow
by banuvatt Tue Apr 07, 2020 8:40 am

» Goat’s foot lever drawings
by Geezer Mon Mar 23, 2020 9:18 am

» First Build
by banuvatt Thu Mar 05, 2020 7:14 pm

» How to Test the Breaking Strength of a Matieral for a Bow String?
by banuvatt Thu Mar 05, 2020 4:06 am

» Can anyone help me ID this?
by Geezer Sat Jan 25, 2020 4:30 pm


    newbie to crossbows here a few questions

    avatar
    blades7558
    Fresh Blood

    Doesn't mean
    I'm new to crossbows


    Fresh Blood Doesn't meanI'm new to crossbows

    Posts : 8
    Join date : 2011-05-25

    newbie to crossbows here a few questions Empty newbie to crossbows here a few questions

    Post by blades7558 on Wed May 25, 2011 11:53 am

    ok so I made my first crossbow, it had a 15 inch power stroke (im guessing)I shot 11/32 arrows they are 15 inches long (again im guessing) it has a rolling nut style trigger and i made the bow from red oak backed with linen. It came out to 50 pounds at 20 inches. It has since taken a lot of set and im dissapointed in its performace.

    now on to the questions:
    i plan opn using leaf springs for the prod, do i have to heat treat the prod fter shaping it?
    can i leave it strung? i hope so since it will be ALOT heavier than a bow
    what are some good dimensions for bolts?
    i have a lathe and a fully stocked wood shop and metal shop so no suggestions are out of question
    mac
    mac
    Master Weaponsmith
    Master Weaponsmith

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

    newbie to crossbows here a few questions Empty Re: newbie to crossbows here a few questions

    Post by mac on Wed May 25, 2011 12:02 pm

    Blades,

    It's a pretty big jump from a 50lb bow to a leaf spring. You might do well to introduce an intermediate step or two in your progress. A fiberglass 150lb prod would be a good next step.

    If you do use leaf spring, you will have to reheat-treat if you forge the spring to a different shape. If you grind it to shape, and take care not to let is overheat during the process, its original heat treatment will serve you well.

    Mac
    avatar
    blades7558
    Fresh Blood

    Doesn't mean
    I'm new to crossbows


    Fresh Blood Doesn't meanI'm new to crossbows

    Posts : 8
    Join date : 2011-05-25

    newbie to crossbows here a few questions Empty Re: newbie to crossbows here a few questions

    Post by blades7558 on Wed May 25, 2011 1:55 pm

    thanks mac I plan on making the prod only 75 to 80 lbs if i can help it and i dont plan on heating recurves or any thing into it so thats a relief that i dont have to heat treat it.
    Basilisk120
    Basilisk120
    Moderator
    Moderator

    Posts : 548
    Join date : 2010-03-01
    Age : 41
    Location : Arizona

    newbie to crossbows here a few questions Empty Re: newbie to crossbows here a few questions

    Post by Basilisk120 on Wed May 25, 2011 4:38 pm

    If you haven't looked at it already there are some plans for making a leaf spring prod in the Crossbow building Wiki: http://crossbow.wikia.com/wiki/Plan_for_a_simple_leaf-spring_prod
    Just be careful as used leaf springs may have taken a beating of there life and have small cracks and pitting in them which will shorten there life span as a bow prod.

    I belive that the leaf spring prods can be tillered similiar to a board bow in that material can be carefully removed from the sides to get a good tiller.

    How long was your red oak prod? It sounds like it may have been a little too short. there are crossbows with wood prods but the prods are longer than metal or horn/sinew prods. Sorry that it didn't work out better but do you ahve pictures.



    Something Something Dark Side
    avatar
    blades7558
    Fresh Blood

    Doesn't mean
    I'm new to crossbows


    Fresh Blood Doesn't meanI'm new to crossbows

    Posts : 8
    Join date : 2011-05-25

    newbie to crossbows here a few questions Empty Re: newbie to crossbows here a few questions

    Post by blades7558 on Wed May 25, 2011 5:00 pm

    thanks basilisk i have been spying on the wiki for a while, i plan on taking the dimensions from alchem prods and trying to recreate it. i plan on welding a small piece of allthread or rebar to the center of the spring. the wood prod was only 50 inches long. i know it was over strained in hind sight i would have used a better wood like beech or hickory but it was an experiment and i had plenty of oak sitting around.

    also another question came up, how does one go about initially stringing these things? just like a bow with a stringer?
    mac
    mac
    Master Weaponsmith
    Master Weaponsmith

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

    newbie to crossbows here a few questions Empty Re: newbie to crossbows here a few questions

    Post by mac on Wed May 25, 2011 8:32 pm

    Blades,

    If you weld anything to the spring, you will alter the heat treatment of that area. You can probably get away with it if you tiller the bow so the welded place does not flex.

    Pay heed to Basilisk's admonition abut used springs. Start with a new one. I once tried to forge an old spring fragment that I fond on the road into a dagger. There was no end to the cracks that showed up as the work progressed. I had to abandon the project because the material was so treacherous.

    Mac
    Basilisk120
    Basilisk120
    Moderator
    Moderator

    Posts : 548
    Join date : 2010-03-01
    Age : 41
    Location : Arizona

    newbie to crossbows here a few questions Empty Re: newbie to crossbows here a few questions

    Post by Basilisk120 on Wed May 25, 2011 10:00 pm

    As for stringing the crossbow.
    There are a few different ways. If the bow is designed right a classic style stringer would work but the ends on most bows are two small.

    Next is a bastard string with clamp ends. Could explain it but this will explain it so much better: http://www.crossbowbook.com/page_115.html
    That is from Payne-Gallway's "the Crossbow", its a good book and worth reading but its not correct on everything for example I believe the bastard string in the book is not the best way of doing that.

    Third is to bend the crossbow with your body and one end of the prod on a piece of wood on the ground. There is a quick desctiption in the back of "Iolo's First Book of Crossbows" (downloadable here: http://crossbows.net/ifboc.php) which was written by Geezer. Another good read and this one is quicker.

    fourth method is to a cross jig. Basically a cross made of wood with some thick wooden dowels at the end of the crossbar. A jack is at the base. The crossbow is loaded so the butt of crossbow is on the jack and is then jacked up so the dowels bend the prod. Geezer uses one in his shop and there pictures some were I just couldn't find them right now.

    Hopefully that helps get you started.



    Something Something Dark Side

    Sponsored content

    newbie to crossbows here a few questions Empty Re: newbie to crossbows here a few questions

    Post by Sponsored content


      Current date/time is Mon Aug 03, 2020 2:55 pm