Ok guys it's been a while since I made a string and I have a couple to make. If my memory serves me correctly a recurve string is four inches shorter than the bow and a longbow is three. Or atleast that is where to start until you play with brace height. Am I correct?
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The AMO string length standard is 3" shorter than the measured AMO length of the bow. That goes for both recurve & longbow.
AMO bow length is derived by measuring (with the bow unstrung) from string notch to string notch, and along the belly side of the limbs in a straight line. Do not measure down into the handle.
This string length standard was derived by using a steel cable (no stretch), so obviously you will need to adjust for the amount of stretch the material you are using will yield.
The more stretch/creep a material will yield, the shorter the string will need to be to compensate without having to much twist.
Your target (stretched/shot in) length should be 3" shorter than the bow.
Rick
EDIT:
Oh & P.S.
Don't trust the AMO length markings on the bow.
Just as an example - I've seen bows marked 62" AMO, that actually measured anywhere from 61" to 63".
Measure it to be sure. You'll be glad you did.Last edited by RickBarbee; 03-03-2013, 03:01 PM.
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Originally posted by RickBarbee View PostThe AMO string length standard is 3" shorter than the measured AMO length of the bow. That goes for both recurve & longbow.
AMO bow length is derived by measuring (with the bow unstrung) from string notch to string notch, and along the belly side of the limbs in a straight line. Do not measure down into the handle.
This string length standard was derived by using a steel cable (no stretch), so obviously you will need to adjust for the amount of stretch the material you are using will yield.
The more stretch/creep a material will yield, the shorter the string will need to be to compensate without having to much twist.
Your target (stretched/shot in) length should be 3" shorter than the bow.
Rick
EDIT:
Oh & P.S.
Don't trust the AMO length markings on the bow.
Just as an example - I've seen bows marked 62" AMO, that actually measured anywhere from 61" to 63".
Measure it to be sure. You'll be glad you did.
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I just use my old string as a length guide which is usually around for 3.5" shorter(unstrecthed) than amo with my low stretch 452x.
I prefer to measure the exact length of my string under tension that gets the brace height I prefer and then prestretch my new string to that length and serve under the same heavy tension.Last edited by brent.westbrook; 03-04-2013, 06:12 AM.
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Bubba,
There are many jigs for making strings, each person will make a different string length off the same jig.
Consistency is the key. You might have to tweak your jig a little here or there to get a constant string. Sometimes ya can't follow the rules of 3 or 4 inches shorter it depends on the bow.
Had a feller bring me in a Robertson stykbow it had a new string but the loops were served at the "Y", it was to keep the string on the bow? 3 inches shorter gave it a 4 inch brace.
To get a comfortable fistmele was 5.25 shorter, but Wow was that dude quiet with a B-50 using my method.
He said, do I need silencers on the string? I said is it loud? he replied Heck no, it's whisper quiet !! Ok, you got a couple feet more per second.
Guide lines are just that. Good luck and happy string twisting.
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Originally posted by Greywolf in Hawaii View PostBubba,
There are many jigs for making strings, each person will make a different string length off the same jig.
Consistency is the key. You might have to tweak your jig a little here or there to get a constant string. Sometimes ya can't follow the rules of 3 or 4 inches shorter it depends on the bow.
Had a feller bring me in a Robertson stykbow it had a new string but the loops were served at the "Y", it was to keep the string on the bow? 3 inches shorter gave it a 4 inch brace.
To get a comfortable fistmele was 5.25 shorter, but Wow was that dude quiet with a B-50 using my method.
He said, do I need silencers on the string? I said is it loud? he replied Heck no, it's whisper quiet !! Ok, you got a couple feet more per second.
Guide lines are just that. Good luck and happy string twisting.
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