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    Making my first crossbow - need to be sure it's safe

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    Gaeth
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    Making my first crossbow - need to be sure it's safe

    Post by Gaeth on Wed Aug 27, 2014 4:09 pm

    Hi, all. I'm going to be making a crossbow for my larp but unfortunately they have no rules specific to crossbows. They are allowed, but the restrictions given for archery aren't helpful when it comes to designing a crossbow - rather, they are more helpful for a standard bow.

    The rules state: "Bows need to be simple recurve bows with no more than 25 pounds at full draw, and with a Draw length of no more than 26”."


    Now, looking at that, I'm thinking that I should be fine with a 50# prod with an 8" powerstroke but as this is my first time making a crossbow, I wanted to get some advice from people with more experience as to whether or not I'm on the right track with this.


    Last edited by Gaeth on Wed Aug 27, 2014 10:59 pm; edited 1 time in total (Reason for editing : Fixed a typo in the subject)
    Geezer
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    Re: Making my first crossbow - need to be sure it's safe

    Post by Geezer on Wed Aug 27, 2014 9:51 pm

    Making larp crossbows offers extra challenges.  I make a lot of crossbows for SCA, which has similar rules.  They allow 30 lb handbows with a max arrow length of 28 inches, which effectively limits them to @ 22 inches of power-stroke (given a 6 inch brace-height) 30 X 22 = 660 inch- pounds.  For crossbows, SCA generally allows 600 inch-pounds as an approximate equivalent.  If your LARP allows 25 lb. for a similar length arrow (28 in.) you're looking at 25 X 22 = @ 550 inch-pounds. Some LARPS specify archers must use only half-draw for close range... which isn't practical for crossbows... you really can't under- draw. So you might run into problems there... perhaps you could specify a minimum safe shooting range instead.  But that's for you to work out. I already did my time, years ago, arguing with SCA marshallate, to come up with workable power definitions.  Good luck stormin' the castle.  Geezer.

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