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

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» Chu Ko Nu - repeating chinese crossbow
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» Plans and materials for my first build
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2 posters

    New builder with questions!

    tensleep
    tensleep
    Fresh Blood

    Doesn't mean
    I'm new to crossbows


    Fresh Blood Doesn't meanI'm new to crossbows

    Posts : 1
    Join date : 2010-09-28

    New builder with questions! Empty New builder with questions!

    Post by tensleep Wed Oct 13, 2010 12:04 am

    Greetings to the Forum,
    My first post with questions concerning my first build.

    Using information gathered here over the past several weeks, and from David Watson's
    "Iolo's First book of Crossbows", I have made an oak tiller w/ a delrin roller in a module
    configuration. Many, many thanks for all of that invaluable assistance.
    I am now addressing the prod. I have a 2" x 36" x 3/16 piece of 7075 al that I have roughed to these dimensions.
    1 3/4 center width, 32" tip to tip, 7/8 wide at this tip.
    1. Based on 3/16 thickness, what width/length should I make the string posts?
    2. Is it acceptable to roll a small amount of recurve at the tips?
    3. If so, generally how would recurve affect the parameter of the prod, if at all?
    4. In other projects, I have used a product called Moly Resin to finish metal components.
    Application requires heating component to 100 F., spray on Moly Resin, cure @300 F
    for 1 hour. My question is, would that procedure possible have an adverse affect on the
    temper of the 7075 aluminum?
    Thank You all again for this resource.
    Tensleep
    zhangyimou
    zhangyimou
    Fresh Blood

    Doesn't mean
    I'm new to crossbows


    Fresh Blood Doesn't meanI'm new to crossbows

    Posts : 13
    Join date : 2010-08-03
    Location : The Netherlands (Holland)

    New builder with questions! Empty heating 7075

    Post by zhangyimou Thu Oct 14, 2010 4:31 am

    i do not think that you change the temper or hardness of your alu. the timespan and temerature are to low for that.
    but you will have to look for technical datasheets of alu producers what these temperatures really do.
    most suppliers have them on their websites.

    grz

      Current date/time is Fri Sep 24, 2021 5:39 pm