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

Latest topics

» Reciprocating Saw?
by chaz Yesterday at 11:37 pm

» has anyone checked out the sling shot channel lately?
by Andy. Tue Dec 12, 2017 2:11 pm

» Brace Hieght?
by chaz Fri Dec 08, 2017 8:02 pm

» My 2nd crossbow project - german crossbow with cranequin
by fester Thu Dec 07, 2017 12:08 pm

» Hemp cord and nut drilling?
by fester Sat Nov 25, 2017 5:22 am

» My project Powermaster
by EugeneSlagle Mon Oct 30, 2017 1:54 pm

» Lillohus crossbow
by Dark Factor Mon Oct 30, 2017 12:45 pm

» Old Powermaster project & question.
by EugeneSlagle Mon Oct 30, 2017 8:14 am

» Medieval composite bows
by Dark Factor Sat Oct 21, 2017 1:44 am

» Medieval bowyer
by Dark Factor Wed Oct 18, 2017 12:30 pm

» New crossbow builder
by wjbates1430 Tue Oct 17, 2017 2:10 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


    Worm Drive Bow Press

    Share
    avatar
    septua
    Tinkerer

    If there is a will, there is a way.


    TinkererIf there is a will, there  is a way.

    Posts : 61
    Join date : 2012-12-02
    Age : 80
    Location : Ohio

    Worm Drive Bow Press

    Post by septua on Sun Jan 25, 2015 3:45 pm

    This version of my bow press uses the same frame of the original but replaces the cam clamp design with an inexpensive ($29 U.S.) worm drive from Harbor freight. I moved the crank handle over to the right side and substituted heavy braided nylon cord for the metal cable. With an adapter an unmounted prod can be strung or an unstrung one can be measured for a string. It takes around 12(40-1) turns of the handle to reach brace and with a worm drive the handle can be released anywhere with no backlash.  The 2 pins are 1- 1/4” oak that go all the way thru the 4x4. This pic was taken in the kitchen because the lighting is more uniform.

    tom




    adapter


    Last edited by SEPTUA on Sun Jan 25, 2015 4:47 pm; edited 1 time in total (Reason for editing : format)
    avatar
    Gnome
    Crossbow Junkie

    I live here!


    Crossbow JunkieI live here!

    Posts : 404
    Join date : 2011-10-16
    Age : 53
    Location : Capitol Area Maryland

    Re: Worm Drive Bow Press

    Post by Gnome on Mon Jan 26, 2015 10:02 am

    Nice setup! Definitely more compact than the rig I built that pretty much dominates the middle of my shop floor.
    Gnome


    Last edited by Gnome on Mon Jan 26, 2015 10:06 am; edited 1 time in total (Reason for editing : me no make no sense)
    avatar
    septua
    Tinkerer

    If there is a will, there is a way.


    TinkererIf there is a will, there  is a way.

    Posts : 61
    Join date : 2012-12-02
    Age : 80
    Location : Ohio

    Re: Worm Drive Bow Press

    Post by septua on Mon Jan 26, 2015 10:25 am

    Gnome
    Thanks, have been using this setup for 2 years. This works in the vert or horiz position but obviously required some loop or attachment at the crossbow front.
    tom

    c sitas
    Crossbow Junkie

    I live here!


    Crossbow JunkieI live here!

    Posts : 444
    Join date : 2012-11-24

    Re: Worm Drive Bow Press

    Post by c sitas on Tue Feb 17, 2015 8:50 pm

    The nice part of this is-- no worry of a broken wrist because the handle slipped out of your grip.

    Sponsored content

    Re: Worm Drive Bow Press

    Post by Sponsored content


      Current date/time is Mon Dec 18, 2017 7:33 am