Defining Bow Performance by John Havard; Dryad Bows.
Posted: Sat Jun 13, 2015 11:56 am
The following is an interesting read if you like numbers.
For example, some numbers i.e. strand count in strings verses performance highlight the fact that it makes little difference in the overall scheme.
“String weight also makes a difference in arrow speed. Much has been written about string materials and string designs. But based on our fairly extensive experience we’ve found that varying string weight by 20 grains makes about 1 fps difference in the speed from our ACS bows. We usually test our bows with 12-strand DF-97 flemish twist strings – the exact same string that we use to hunt with our bows. Again, we’re interested in determining how the bow performs for the archer. On conventional bows with heavier limbs and with lower SE/PDF and DE numbers, changing string weight as much as 75 grains is necessary in order to make a difference of 1 fps. Sort of like putting an extra 1000 pounds on an 18-wheeler that already weighs 35,000 pounds. You won’t notice it! “
Daryl.
For example, some numbers i.e. strand count in strings verses performance highlight the fact that it makes little difference in the overall scheme.
“String weight also makes a difference in arrow speed. Much has been written about string materials and string designs. But based on our fairly extensive experience we’ve found that varying string weight by 20 grains makes about 1 fps difference in the speed from our ACS bows. We usually test our bows with 12-strand DF-97 flemish twist strings – the exact same string that we use to hunt with our bows. Again, we’re interested in determining how the bow performs for the archer. On conventional bows with heavier limbs and with lower SE/PDF and DE numbers, changing string weight as much as 75 grains is necessary in order to make a difference of 1 fps. Sort of like putting an extra 1000 pounds on an 18-wheeler that already weighs 35,000 pounds. You won’t notice it! “
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