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

Latest topics

» Beware of Alchem
by Archer46176 Today at 3:47 pm

» Crossbow with built in lever?
by John Edgerton Today at 12:38 pm

» Of Bows and Torsion Engines
by JacobL Mon Aug 14, 2017 12:03 pm

» Early Lever and pin Crossbow
by topfmine Mon Aug 14, 2017 8:56 am

» Crusader crossbow
by topfmine Mon Aug 14, 2017 8:53 am

» First Efforts
by rickraedeke Tue Aug 08, 2017 5:25 am

» aluminum prod
by Phil Abrahams Fri Aug 04, 2017 8:38 am

» First whitetail buck taken with medieval crossbow
by Phil Abrahams Fri Aug 04, 2017 3:38 am

» Airsoft Crossbow
by JacobL Wed Aug 02, 2017 9:11 pm

» Questions about steel prod specs
by JacobL Mon Jul 31, 2017 8:25 pm

» Faking a medieval composite crossbow prod.
by JacobL Mon Jul 31, 2017 8:13 pm

» Airsoft Bow
by JacobL Sun Jul 30, 2017 1:56 pm

» Hello All!
by JacobL Sun Jul 30, 2017 12:54 pm

» Padre Island Bow
by Geezer Wed Jul 26, 2017 12:14 pm

» Blocked pictures by Photobucket
by Crossbowmen Mon Jul 24, 2017 1:33 pm

» Geezer website?
by Geezer Fri Jul 21, 2017 3:01 pm

» Could I get advise on order of operations?
by Bs1110101 Wed Jul 19, 2017 4:02 am

» Renaissance Sporting crossbow
by chaz Mon Jul 10, 2017 12:22 am

» Welcome! Welcome! Welcome!
by Agniznag Sat Jul 08, 2017 12:26 pm

» The Arbalist Guild - Around the World
by Agniznag Sat Jul 08, 2017 11:56 am

» opinions please
by Geezer Thu Jul 06, 2017 10:19 pm

» Hello all!
by Tarzan65 Thu Jul 06, 2017 10:54 am

» Yet another one
by Daniel Levesque Sun Jul 02, 2017 9:37 am

» Renaissance peep sight
by kenh Fri Jun 30, 2017 4:48 am

» Chinese crossbow with auxiliary string?
by stm2010 Mon Jun 26, 2017 9:48 am


    How long should a crossbow string be?

    Share

    chaz
    Workshop Savvy

    Did you see my tool collection?


    Workshop SavvyDid you see my tool collection?

    Posts : 291
    Join date : 2012-04-13
    Age : 68
    Location : Texas

    How long should a crossbow string be?

    Post by chaz on Tue Aug 14, 2012 7:17 pm

    HEY GUYS

    Is there a rule of thumb concerning the length of a bow string ....................when making your own prod and string should the string be an inch or so shorter than the length of the prod, or just enough to bring tension to the prod ?

    Thanks.

    Chaz
    avatar
    mac
    Master Weaponsmith
    Master Weaponsmith

    Posts : 560
    Join date : 2010-12-23
    Location : Near Philly USA

    Re: How long should a crossbow string be?

    Post by mac on Fri Aug 17, 2012 9:05 am

    Chaz,

    I don't think that there can be a rule of thumb that applies to all sorts of prods. the string length will depend of the amount of reflex (or deflex), and the intended brace height.

    The best I can suggest is this empirical method..... Draw the prod on a tiller board with a bastard string until it "looks right" and then measure the distance between the nocks. Even here, you will have to make allowances for the amount of string taken up in the loops etc.

    I always end up making a couple of strings before I get one that is right. The "failures" can be set aside and used as strings for other bows, or as bastards.

    Mac

    chaz
    Workshop Savvy

    Did you see my tool collection?


    Workshop SavvyDid you see my tool collection?

    Posts : 291
    Join date : 2012-04-13
    Age : 68
    Location : Texas

    Re: How long should a crossbow string be?

    Post by chaz on Fri Aug 17, 2012 4:26 pm

    M ac,

    Thanks for the response. I'm currently working on a crossbow bracket to accomodate either metal or wood split limb prod and started thinking in terms of the string length, As you said...... I pretty much believed it would be a trial and error thing , but was hoping for a "rule of thumb quick fix."

    Thanks again

    Chaz
    avatar
    Todd the archer
    Crossbow Junkie

    I live here!


    Crossbow JunkieI live here!

    Posts : 581
    Join date : 2010-02-25
    Age : 55
    Location : sellersville,pa.

    Re: How long should a crossbow string be?

    Post by Todd the archer on Fri Aug 17, 2012 4:37 pm

    Here is my rough guidline for starters:

    For every foot of bow length (nock to nock) brace one inch plus an inch.

    For example if the prod is 2 1/2 feet long brace it 3 1/2"

    If 1 1/2 foot long brace it 2 1/2"

    6 foot english longbow brace 7"

    This is only a rough starting point but I don't think you will too far off.



    Todd

    chaz
    Workshop Savvy

    Did you see my tool collection?


    Workshop SavvyDid you see my tool collection?

    Posts : 291
    Join date : 2012-04-13
    Age : 68
    Location : Texas

    Re: How long should a crossbow string be?

    Post by chaz on Fri Aug 17, 2012 5:58 pm

    Todd,

    Thanks that sounds like a good starting point.

    Chaz

    Sponsored content

    Re: How long should a crossbow string be?

    Post by Sponsored content


      Current date/time is Thu Aug 17, 2017 6:59 pm