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

» Troubleshooting
by stuckinthemud1 Sat Oct 01, 2022 3:08 pm

» Qin/Han lock drawings
by kenh Fri Sep 23, 2022 8:16 pm

» stirrup dimensions?
by stuckinthemud1 Thu Sep 01, 2022 1:49 pm

» Skane/Lillohus lockbow information needed
by stuckinthemud1 Sun Aug 14, 2022 6:23 am

» need help contacting le musee Dauphinois Grenoble
by stuckinthemud1 Sat Aug 13, 2022 3:22 pm

» Low Draw Weight Build
by stuckinthemud1 Fri Aug 12, 2022 3:09 pm

» Trigger testing Rig/Jig?
by ora8i Fri Aug 12, 2022 1:13 pm

» Collotiere a Charavines crossbow
by stuckinthemud1 Sat Jul 23, 2022 5:45 am

» Bad Antler
by stuckinthemud1 Tue Jun 28, 2022 8:09 am

» best type of horn to use..
by stuckinthemud1 Fri Jun 24, 2022 6:13 am

» Han Dynasty Chinese Crossbow
by hullutiedemies Fri Jun 17, 2022 1:00 pm

» Drawing of Crossbow
by stuckinthemud1 Fri Jun 03, 2022 3:01 am

» "How To Make Everything": Early Crossbow
by stuckinthemud1 Thu Jun 02, 2022 3:41 am

» Black inlay
by stuckinthemud1 Fri May 13, 2022 3:18 pm

» Roller nut details
by drawknife Thu Apr 21, 2022 2:44 pm

» 330#/7" wood bow
by Anatine Duo Tue Mar 29, 2022 11:08 am

» starting a 1400's replica
by stuckinthemud1 Thu Feb 24, 2022 1:26 pm

» 18th century German crossbow reproduction
by Fangbows Sun Feb 20, 2022 7:15 am

» replacement for baleen?
by tghsmith Mon Jan 17, 2022 9:30 am

» Josef alm in English
by stuckinthemud1 Fri Jan 14, 2022 3:07 pm

» Medieval crossbow finished
by stuckinthemud1 Wed Jan 12, 2022 3:05 pm

» Trigger mechanisms
by stuckinthemud1 Mon Jan 03, 2022 10:23 am

» Finish wooden stock
by stuckinthemud1 Sat Dec 25, 2021 9:06 am

» finish prod binding
by kenh Tue Nov 30, 2021 5:26 am

» What bolts do you use?
by hullutiedemies Mon Nov 22, 2021 9:43 am


4 posters

    Low Draw Weight Build

    avatar
    ora8i
    Fresh Blood

    Doesn't mean
    I'm new to crossbows


    Fresh Blood Doesn't meanI'm new to crossbows


    Posts : 42
    Join date : 2011-09-23

    Low Draw Weight Build Empty Low Draw Weight Build

    Post by ora8i Thu Aug 04, 2022 12:35 pm

    Evening All.

    I'm tempted to do a low/very low draw weight bow, bundle prod, with a reverse draw in effect just a big pistol and little more than a toy.

    As always the biggest issue is fabricating a lock I only have very basic hand tools so I need a design that is easy to build, safe and has a reasonably light trigger pull.

    As I hope to build something like a pistol it would need a trigger rather than a long leaver, I have read here (thanks) that delrin with a steel insert should work for a nut but that is only part of it.

    https://drive.google.com/file/d/1ToVGZSAWKJR4uDtd6_Uj1TYJlXttAann/view?usp=sharing

    That mechanism is from Terry Stuarts book, if I were to lengthen the nut to bulk it up and move the cross pin (sear) away from the pivot is it likely to work?

    I would like to laminate the stock is Marine grade plywood (hard wood no voids) a suitable material?

    Thanks All     Ora
    avatar
    kenh
    Crossbow Junkie

    I live here!


    Crossbow JunkieI live here!


    Posts : 863
    Join date : 2012-08-03
    Age : 74
    Location : Living Aboard a Sailboat in Fort Myers, FL

    Low Draw Weight Build Empty Re: Low Draw Weight Build

    Post by kenh Fri Aug 05, 2022 9:16 am

    If you're looking at under 80-100# draw weight, you won't need a steel insert in the Delrin.  That's just not that much stress.  You can replace the whole nut for less time and effort than drilling and inserting an steel pin/screw.
    avatar
    ora8i
    Fresh Blood

    Doesn't mean
    I'm new to crossbows


    Fresh Blood Doesn't meanI'm new to crossbows


    Posts : 42
    Join date : 2011-09-23

    Low Draw Weight Build Empty Re: Low Draw Weight Build

    Post by ora8i Fri Aug 05, 2022 12:59 pm

    Thanks Kieth.
    That is the sort of draw weight I would be looking for, I'm in the UK so no bow hunting and realy no place were your allowed to shoot. I'm just looking at a fun build, I take it that Marine plywood will be Ok?
    As it happens I have some 3030 aluminium extrusion leftover from a 3D Printer build I may include that for the bolt track.

    Atb. Ora


    avatar
    kenh
    Crossbow Junkie

    I live here!


    Crossbow JunkieI live here!


    Posts : 863
    Join date : 2012-08-03
    Age : 74
    Location : Living Aboard a Sailboat in Fort Myers, FL

    Low Draw Weight Build Empty Re: Low Draw Weight Build

    Post by kenh Fri Aug 05, 2022 4:34 pm

    Marine ply is fine if you like that sort of thing. 
    You might think about a bundle prod made from bicycle spokes...   
    Unless you want to just go through the motions, you won't need a metal bolt track, either, just a simple saw slot sanded round-ish.
    avatar
    Andy.
    Workshop Savvy

    Did you see my tool collection?


    Workshop SavvyDid you see my tool collection?


    Posts : 131
    Join date : 2014-09-05

    Low Draw Weight Build Empty Re: Low Draw Weight Build

    Post by Andy. Sat Aug 06, 2022 4:12 am

    For what its worth, a crossbow and bow builder here in Melbourne Australia in the mid 80's used the same trigger mech in the above link. 

    Great simple design that worked well. 

    The latch on his was shaped out of a single block of alli, and the sear pin was a 1/8 drill bit shaft loctited into place. Trigger blade sear was case hardened as per diagram.
    avatar
    ora8i
    Fresh Blood

    Doesn't mean
    I'm new to crossbows


    Fresh Blood Doesn't meanI'm new to crossbows


    Posts : 42
    Join date : 2011-09-23

    Low Draw Weight Build Empty Re: Low Draw Weight Build

    Post by ora8i Sat Aug 06, 2022 1:04 pm

    Thanks Andy.

    I'm glad to know the trigger is OK and I'll probably use it.

    At the moment I'm trying to prevent "project creep" I want to build a bit of fun but my eyes keep drifting to more serious bows things I could never shoot but are just so tempting and not much more trouble to build......


    ATB

    Andy. likes this post

    avatar
    stuckinthemud1
    Crossbow Junkie

    I live here!


    Crossbow JunkieI live here!


    Posts : 454
    Join date : 2014-02-05
    Age : 54
    Location : south wales valleys

    Low Draw Weight Build Empty Re: Low Draw Weight Build

    Post by stuckinthemud1 Tue Aug 09, 2022 4:05 pm

    Hi Ora, where abouts in the UK are you? I’m not far from Cardiff
    avatar
    Andy.
    Workshop Savvy

    Did you see my tool collection?


    Workshop SavvyDid you see my tool collection?


    Posts : 131
    Join date : 2014-09-05

    Low Draw Weight Build Empty Re: Low Draw Weight Build

    Post by Andy. Wed Aug 10, 2022 3:27 pm

    Thinking of building this mech myself as a replacement trigger on an existing bow. 

    Fyi... the sear surface on the trigger must be 90deg to its pivot point to be safe. This is not clearly indicated in the diagram.
    avatar
    ora8i
    Fresh Blood

    Doesn't mean
    I'm new to crossbows


    Fresh Blood Doesn't meanI'm new to crossbows


    Posts : 42
    Join date : 2011-09-23

    Low Draw Weight Build Empty Re: Low Draw Weight Build

    Post by ora8i Fri Aug 12, 2022 1:09 pm

    Hi Andy.

    I am between Liverpool and manchester.

    Ora.
    avatar
    stuckinthemud1
    Crossbow Junkie

    I live here!


    Crossbow JunkieI live here!


    Posts : 454
    Join date : 2014-02-05
    Age : 54
    Location : south wales valleys

    Low Draw Weight Build Empty Re: Low Draw Weight Build

    Post by stuckinthemud1 Fri Aug 12, 2022 3:09 pm

    There should be some clubs near you. National Field Archery Society encourages crossbows, club finder map shows half a dozen clubs between Liverpool and Manchester.

    Sponsored content


    Low Draw Weight Build Empty Re: Low Draw Weight Build

    Post by Sponsored content


      Current date/time is Mon Oct 03, 2022 6:29 am