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

Latest topics

» Medieval bowyer
by kenh Today at 3:55 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

» First Efforts
by rickraedeke Tue Aug 08, 2017 5:25 am

» aluminum prod
by Phil Abrahams Fri Aug 04, 2017 8:38 am

» First whitetail buck taken with medieval crossbow
by Phil Abrahams Fri Aug 04, 2017 3:38 am

» Airsoft Crossbow
by JacobL Wed Aug 02, 2017 9:11 pm

» Questions about steel prod specs
by JacobL Mon Jul 31, 2017 8:25 pm

» Faking a medieval composite crossbow prod.
by JacobL Mon Jul 31, 2017 8:13 pm

» Airsoft Bow
by JacobL Sun Jul 30, 2017 1:56 pm

» Hello All!
by JacobL Sun Jul 30, 2017 12:54 pm

» Padre Island Bow
by Geezer Wed Jul 26, 2017 12:14 pm

» Blocked pictures by Photobucket
by Crossbowmen Mon Jul 24, 2017 1:33 pm


    Groove vs. Rests

    Share

    Stonedog
    Tinkerer

    If there is a will, there is a way.


    TinkererIf there is a will, there  is a way.

    Posts : 107
    Join date : 2012-07-04

    Groove vs. Rests

    Post by Stonedog on Sat Jul 21, 2012 2:49 pm

    I am building my first crossbow for hunting this fall. It will be the only weapon I use to hunting with for large and small game.

    So, knowing this, would it be better for me to go with the bolt groove or the bolt rests??

    I am going to cut the groove with a mitre table...
    avatar
    Geezer
    Master Crossbowyer
    Master Crossbowyer

    Posts : 958
    Join date : 2010-01-12
    Age : 69
    Location : Austin, Texas, USA

    Re: Groove vs. Rests

    Post by Geezer on Sat Jul 21, 2012 3:53 pm

    I build lots of bows with rests and like them very well, but honestly... for your first bow, use a groove. It's a bit less fiddly and holds the bolt more securely. Geezer.
    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: Groove vs. Rests

    Post by septua on Mon Feb 25, 2013 3:26 pm

    Here is a track profile and guide “shuttle” that could give more
    consistent bolt path. However the shuttle must support and center the bolt at
    rear and have an arrow rest at front of the tiller. In other words these balls
    or arrows never contact the track. A gap is provided between shuttle bottom and
    track. My activator or”wippe” fits the shuttle exactly so the bowstring is
    always drawn back the same. Use of a projectile shuttle is an ancient idea, but
    I came up with this design after experiments with round shuttles and “V” groove
    tracks were disappointing.


    Below is a removable ¼” high track on my ball shooting
    crossbow. The track is attached using Loctite spray adhesive and has survived
    thousands of shots. Note the blue lexan ball retainer; it swings up as the shot
    is fired. Of course at this low velocity the balls do not make clean holes so targets
    are 1 shot each at 12 bulls designed for army small bore training. Ammo is
    .375” steel and .400” lead seated in a conical socket. The consistent shot placement is well beyond
    my hand held ability.

    avatar
    Geezer
    Master Crossbowyer
    Master Crossbowyer

    Posts : 958
    Join date : 2010-01-12
    Age : 69
    Location : Austin, Texas, USA

    Re: Groove vs. Rests

    Post by Geezer on Mon Feb 25, 2013 9:09 pm

    Geezer here re: stonebow 'shuttles'. You're right, these stone-bow adaptors are well document in the literature, and in fact I have seen them on renaissance bows. There's a shuttle on a nice little combination crossbow/gun/stonebow in the Metropolitan Museum in New York. Of course the weight of the shuttle eats a bit of power... your plastic ones will be more efficient than period steel ones. A bone shuttle might prove useful, but I've only seen metal ones. Anyhow, it should serve you well for ball-shooting. Glad to see somebody's tinkering with such things.
    avatar
    Geezer
    Master Crossbowyer
    Master Crossbowyer

    Posts : 958
    Join date : 2010-01-12
    Age : 69
    Location : Austin, Texas, USA

    Re: Groove vs. Rests

    Post by Geezer on Mon Feb 25, 2013 9:11 pm

    Geezer ps: And yes, modern Swiss crossbows use a pusher-shuttle to ensure the bowstring is always perfectly centered in the track. The perfect centering probably far outweighs any loss of efficiency due to their weight and friction.
    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: Groove vs. Rests

    Post by septua on Mon Feb 25, 2013 11:59 pm

    Geezer





    Yes I saw that museum item awhile back. That wide sloped
    track profile was a dramatic improvement over the narrow V and slot types I started with. The whole thing is an ongoing fun experiment. I am 75 and regret not getting into this a bit earlier.
    Sep


    Last edited by SEPTUA on Tue Feb 26, 2013 12:03 am; edited 1 time in total (Reason for editing : cleaned up the format)

    Sponsored content

    Re: Groove vs. Rests

    Post by Sponsored content


      Current date/time is Mon Oct 16, 2017 4:01 pm