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

Latest topics

» Powermaster
by rickraedeke Yesterday at 6:46 am

» Best wood for a novice?
by Geezer Sun Sep 17, 2017 9:21 am

» Adding a steel sear insert?
by Geezer Fri Sep 15, 2017 7:13 am

» Great Machines
by c sitas Sat Sep 09, 2017 5:39 pm

» Medieval Crossbow Bolts DIY Question
by Rumburak Thu Sep 07, 2017 12:17 pm

» Berkhamsted Castle and Glasgow Museum wooden prod crossbow
by Juniper Fri Aug 25, 2017 3:54 pm

» Beware of Alchem
by Archer46176 Mon Aug 21, 2017 3:33 pm

» How to measure and cut leather for prod
by Celtic Archer Sun Aug 20, 2017 5:56 pm

» Crossbow with built in lever?
by John Edgerton Thu Aug 17, 2017 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


    Dacron B50 Stretch

    Share

    Stonedog
    Tinkerer

    If there is a will, there is a way.


    TinkererIf there is a will, there  is a way.

    Posts : 107
    Join date : 2012-07-04

    Dacron B50 Stretch

    Post by Stonedog on Sat Jun 20, 2015 9:27 am

    I have a SB113 prod, #200.  Per Gary at SB, the string length for this prod is 26.5

    I have made a lot of bow strings and that isn't the issue.

    Dacron will stretch....quite a lot.

    What are your thoughts on making the string 24.5" long and pre-stretch it?

    c sitas
    Crossbow Junkie

    I live here!


    Crossbow JunkieI live here!

    Posts : 435
    Join date : 2012-11-24

    Re: Dacron B50 Stretch

    Post by c sitas on Sat Jun 20, 2015 10:35 am

    Stone; For no more than Dacron costs,I would layup the string you mention. I have my setup with a boat winch and scale on one end. Any way stretch it out and see what happens. Won't cost more than a buck . You don't have to serve it. I use the more modern stuff 8125 BCY. I stretch that to 350#. Once made it does not move,period.This stuff more more like a wire when done.I use 20 strands=10 loops.

    Stonedog
    Tinkerer

    If there is a will, there is a way.


    TinkererIf there is a will, there  is a way.

    Posts : 107
    Join date : 2012-07-04

    Re: Dacron B50 Stretch

    Post by Stonedog on Sat Jun 20, 2015 10:55 am

    I have a 3 spools of B50, so I'll go with that....Ill make a few strings and hang them up with an attached 25# weight and let it go for a few days and see what happens....I'll start with a 25" string as B50 tends to stretch about 1.5"...

    I've always used a Flemish with a bowyer's knot on my longbows....but a crossbow is a bit of a different animal....I do know how to make an endless loop string and serve.  I'll just set up a jig with adjustable lengths if need be!  THANKS!

    c sitas
    Crossbow Junkie

    I live here!


    Crossbow JunkieI live here!

    Posts : 435
    Join date : 2012-11-24

    Re: Dacron B50 Stretch

    Post by c sitas on Sat Jun 20, 2015 12:39 pm

    Stone, I don't know what your doing, I maybe get 1/4" stretch with the endless loop. That's nothing, and can be taken up  with a few twist.

    Sponsored content

    Re: Dacron B50 Stretch

    Post by Sponsored content


      Current date/time is Tue Sep 19, 2017 9:10 am