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    Old Powermaster project & question.

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    EugeneSlagle
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    Fresh Blood Doesn't meanI'm new to crossbows

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    Location : Virginia

    Old Powermaster project & question.

    Post by EugeneSlagle on Mon Oct 30, 2017 7:27 am

    Good morning.
    I just ordered a crossbow prod Saturday #6732 From alcheminc  for my project Powermaster crossbow i had recently purchased & am hoping for the prod weight to be possibly around 100 pounds but if it's at 110 I can adjust my bolts that I'm building, less is okay.

    I purchased this crossbow from a yard sale & am impressed that it's all there & functions, I purchased it to use as a demonstrator primarily for my archery class where I show the differences of the types of archery equipment with maybe a demonstration of use but doing some research i found that one of the weak points of this crossbow was it's aluminum prod which is why i ordered one from them.
    I would like to be able to shoot this from time to time & not worry about a failure that could injure someone.

    My question to you is: 
    As a temporary build of bolts, I'm taking some Easton XX75 2114's that were too short for typical students with a vertical bow, removing the nocks & cutting them down to 21.25" length, inserting a a Gold Tip Entrada 600 as a spine & weight enhancer then installing a 150gr. point with 5" feathers, total weight is 532gr.
    Is this enough as a safe shooting bolt?

    I'm basing my experience of spine of an arrow to the weight & draw length of a typical recurve, longbow or compound.
    I'm also basing my experience of minimum arrow weight be 5 grain per pound of bow weight.

    Would appreciate your thoughts on this.
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    Geezer
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    Re: Old Powermaster project & question.

    Post by Geezer on Mon Oct 30, 2017 7:59 am

    Your proposed bolts should work fine.  In fact, spine weight is relatively unimportant in crossbows.  Given fairly short bolts, you won't experience any flexing of the shaft anyway. It IS possible to build bolts that are just too wimpy for the power, but your plans should work out fine.  Geezer.

    EugeneSlagle
    Fresh Blood

    Doesn't mean
    I'm new to crossbows


    Fresh Blood Doesn't meanI'm new to crossbows

    Posts : 3
    Join date : 2017-10-30
    Location : Virginia

    Re: Old Powermaster project & question.

    Post by EugeneSlagle on Mon Oct 30, 2017 8:14 am

    Thank you sir.

    I've been shooting recurves, longbows & compounds for almost 40 years & only shot a few friends crossbows so have little experience with them.
    Been teaching archery for over 25 years & only recently started teaching future instructors which I & other coaches in my club emphasize on safety above all else & being that I have never needed or really desired to use a crossbow before this is a little foreign to me.

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