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    Vertical Crossbow (ideas for trigger) need help/info/pics.

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    hijakR
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    Vertical Crossbow (ideas for trigger) need help/info/pics.

    Post by hijakR on Wed May 30, 2012 1:27 pm

    Hi guys, I'm presently at the drawing stage for a vertically mounted crossbow and I'm having difficulty with the trigger mech, how could i make it compact and reliable/solidly built? The drawings and pictures I have are from an SAS guidebook (a design built by Ivan Williams) but it doesnt show much. Any help would be greatly appreciated.
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    whiteraven
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    Re: Vertical Crossbow (ideas for trigger) need help/info/pics.

    Post by whiteraven on Wed May 30, 2012 1:49 pm

    You meaning something like this?


    Interested to watch this.
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    Re: Vertical Crossbow (ideas for trigger) need help/info/pics.

    Post by hijakR on Wed May 30, 2012 2:16 pm

    Yes, just like this,I'm trying to keep the trigger case depth at 30mm to keep the overall look sleek,the one I've drawn is just too fat looking.Is this your design? if so, would you be willing to show your trigger off?
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    Re: Vertical Crossbow (ideas for trigger) need help/info/pics.

    Post by whiteraven on Wed May 30, 2012 2:36 pm

    Not my design, just searched Google images for a vertical crossbow and that caught my eye. I think it's called a Mantis?
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    Re: Vertical Crossbow (ideas for trigger) need help/info/pics.

    Post by hijakR on Thu May 31, 2012 5:54 pm

    ok, I did a google search on Ivan Williams (he holds over 2000 patents) and found a crossbow that he designed in 1967 cheers , it has a vertical mounted bow and a cocking device (which is similar to the russian strelitz,where the bow slides on a guide) anyway, a cocking device would be good,then I can up the power and do away with a stirrup. My builds end up different from the drawings study so I'll see what happens


    Last edited by hijakR on Thu May 31, 2012 6:04 pm; edited 1 time in total (Reason for editing : forgot something)

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    Re: Vertical Crossbow (ideas for trigger) need help/info/pics.

    Post by 8fingers on Sun Jun 03, 2012 7:06 pm

    Mother Earth News did one where they converted a compound bow into a vertical crossbow. Used an aluminum tubing frame / stock as I recall. http://www.motherearthnews.com/Do-it-Yourself/1987-03-01/Medieval-Modern-Crossbow.aspx?page=3
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    Regerald
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    Re: Vertical Crossbow (ideas for trigger) need help/info/pics.

    Post by Regerald on Mon Jun 04, 2012 1:59 am

    I think a trigger mech somehow similar to one they have in a roman ballista could do the work.. Here is one picture where it's scheme is easily seen.
    http://wattsunique.com/blog/wp-content/uploads/img_1847.jpg
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    Re: Vertical Crossbow (ideas for trigger) need help/info/pics.

    Post by Warhammer1 on Wed Jun 13, 2012 3:08 pm

    on ebay in the used crossbows section, you can find a movie prop vertical crossbow complete with trigger arrangement. It was used in an early Star Trek shoot as a "klingon" crossbow....

    you will have to search for it quickly as listing will time out.
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    Re: Vertical Crossbow (ideas for trigger) need help/info/pics.

    Post by Ivo on Thu Jun 14, 2012 3:36 am

    whiteraven wrote:You meaning something like this?


    Interested to watch this.

    That bow............. Smile

    Believe it or not...it has a rotating front.

    It can be both - vertical...



    ...and horizontal.



    From what I can see in the pictures, there are actually two triggers there, each for different barrel position.

    I think the guys are on the right track with the ballista release. A claw released by sliding a shim from it's tail end.



    Phil Abrahams is a pretty col gent when it comes to crossbows, isn't he? Smile He's a member here and there is a Facebook page dedicated to his Talisman Crossbows. I'll see if I can get in touch with him again.

    Ivo




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    Re: Vertical Crossbow (ideas for trigger) need help/info/pics.

    Post by Warhammer1 on Thu Jun 14, 2012 6:17 am

    Why not drop him a line on Facebook?

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    Re: Vertical Crossbow (ideas for trigger) need help/info/pics.

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