Main Discussion Area > Arrows
Spining tapered shafts
jeffp51:
I thought you were supposed to put the weight right at the mid point. Am I missing something?
TSA:
i am inclined to agree with jeff- you really should measure the center of the shaft, as thats where the apex of the flexion is, its where the dynamic spine is induced.
also,you dont mention if they are wood or carbon shafts you are measuring, i will assume that you are measuring wood shafts DC, but it sounds like you are measuring with the supports on your spine tester set at 28".
thats for carbon shafts.
wood should be at 26".
in that case check your weight! for wood it should be 2 lbs exactly, for carbon it should be 1.94 lbs
cheers mate!! :)
DC:
--- Quote from: TSA on December 12, 2017, 12:02:43 am ---i am inclined to agree with jeff- you really should measure the center of the shaft, as thats where the apex of the flexion is, its where the dynamic spine is induced.
also,you dont mention if they are wood or carbon shafts you are measuring, i will assume that you are measuring wood shafts DC, but it sounds like you are measuring with the supports on your spine tester set at 28".
thats for carbon shafts.
wood should be at 26".
in that case check your weight! for wood it should be 2 lbs exactly, for carbon it should be 1.94 lbs
cheers mate!! :)
--- End quote ---
Bamboo shafts 26" and 2# :D These are tapered shafts, wouldn't the center of flexion be closer to the nock?
willie:
--- Quote ---These are tapered shafts, wouldn't the center of flexion be closer to the nock?
--- End quote ---
probably to a small degree, but the purpose of a static test is to create a base line that helps you model the dynamics of the way you shoot. whichever way you measure will be helpful if you remain consistent. accuracy of measurement may not be so telling. two archers shooting the same bow can prefer different arrows, at least that's what happens when I swap bows with my friend at the range.
Hawkdancer:
May not be the right place to ask this, but what is the correct arrow length? Draw length plus enough extra for the head, I.e. about 2"? Or does it matter? How does any extra length affect spine? Thanks.
Hawkdancer
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