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

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4 posters

    I need help with some calaculations

    Krankenheim
    Krankenheim
    Fresh Blood

    Doesn't mean
    I'm new to crossbows


    Fresh Blood Doesn't meanI'm new to crossbows

    Posts : 5
    Join date : 2010-11-16

    I need help with some calaculations Empty I need help with some calaculations

    Post by Krankenheim Tue Nov 16, 2010 12:18 pm

    I need the rough weight of a tool steel projectile that is about 8 and 1/2 cubic inches in volume (if I did that right).
    Geezer
    Geezer
    Master Crossbowyer
    Master Crossbowyer

    Posts : 1194
    Join date : 2010-01-12
    Age : 73
    Location : Austin, Texas, USA

    I need help with some calaculations Empty Re: I need help with some calaculations

    Post by Geezer Tue Nov 16, 2010 12:31 pm

    Steel plate weighs approx. 40 lb. per square foot at a thickness of 1 inch. So figure 40 lb. for 144 square inches.
    Yes, I know you specified tool steel, but quite honestly, that won't make much difference anyway.
    See, Ma, all those years studying battleships really DID pay off. Geezer
    Krankenheim
    Krankenheim
    Fresh Blood

    Doesn't mean
    I'm new to crossbows


    Fresh Blood Doesn't meanI'm new to crossbows

    Posts : 5
    Join date : 2010-11-16

    I need help with some calaculations Empty Re: I need help with some calaculations

    Post by Krankenheim Tue Nov 16, 2010 3:17 pm

    I suppose your right about there not being much of a difference in the weight of the steel. In fact, now that I think about it, there wouldn't be much of a difference at all. When it comes down to it tool steel would have only a tenth-of-a-percent difference in the carbon content as opposed to steel of a different grade.
    Regerald
    Regerald
    Master Crossbowyer
    Master Crossbowyer

    Posts : 67
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    I need help with some calaculations Empty Re: I need help with some calaculations

    Post by Regerald Wed Nov 17, 2010 1:43 pm

    I got around 2.42 lb..
    zhangyimou
    zhangyimou
    Fresh Blood

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    Fresh Blood Doesn't meanI'm new to crossbows

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    I need help with some calaculations Empty Re: I need help with some calaculations

    Post by zhangyimou Thu Nov 18, 2010 4:44 am

    for steel in general you caculate with: 7,85 or 8 gramms per cm3 at 20 degrees Celsius
    depending on if there is Chromium, Vanadium, Cobalt etc alloyed

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