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    Roller nut side panels: Is it necessary to reinforce?

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    Stonedog
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    Roller nut side panels: Is it necessary to reinforce?

    Post by Stonedog on Fri Jul 06, 2012 11:17 am

    I am using ash for the tiller of my crossbow. It is a bat blank so has a ramrod straight grain from the front to the end....

    I have noticed that a lot of crossbows have metal side panels to reinforce the roller nut socket area.

    Is this necessary?
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    ferdinand
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    Re: Roller nut side panels: Is it necessary to reinforce?

    Post by ferdinand on Fri Jul 06, 2012 1:35 pm

    Hello there!
    It all depends on the hardnes of the wood i think!
    My first bow i used metal side plates, soft wood.
    The one i'm making currently is tropical hardwood, no sideplates on that one!
    But it can be decoratif!

    Stonedog
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    Re: Roller nut side panels: Is it necessary to reinforce?

    Post by Stonedog on Fri Jul 06, 2012 2:01 pm

    Hmmm......well.....I am probably going to do it....just in case!
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    Todd the archer
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    Re: Roller nut side panels: Is it necessary to reinforce?

    Post by Todd the archer on Fri Jul 06, 2012 2:32 pm

    I do not think it is really needed. Here is a picture of one of mine that has a 150 pound prod and no problems so far. Just used 1/4" slats of wood on both sides. The hole is bored completely through.





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    Re: Roller nut side panels: Is it necessary to reinforce?

    Post by Stonedog on Fri Jul 06, 2012 2:43 pm

    Cool! Like I said, I used ash. It is not bored all the way through and has 1" of wood on each side of the nut. This piece of ash is literally perfect for this tiller.

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    mac
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    Re: Roller nut side panels: Is it necessary to reinforce?

    Post by mac on Fri Jul 06, 2012 9:46 pm

    Stone,

    The historical crossbows with metal side plates are designed to be spanned with a goat's foot lever. They need to be slim to allow the hooks of the goat's foot to pass on either side. Further, the goat's foot levers against pins which are on the opposite side of the nut from the bow. This puts the "nut well" in a bending load when the bow is spanned. To make all this work out, they put metal plates on either side of the nut well.

    Tor most crossbows, these are unnecessary.

    Mac
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    Todd the archer
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    Re: Roller nut side panels: Is it necessary to reinforce?

    Post by Todd the archer on Sat Jul 07, 2012 4:13 am

    I guess I could add that if there is enough wood under the nut area that would compensate for the lack of wood on the sides.



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