Main Discussion Area > Arrows
New batch of Khan's tonkin shafts
razorsharptokill:
To get to 600+ grains I insert a finish nail into the tip and use a 160 grain point or broadhead And left them full length. I hope to hunt Pronghorns in Wyoming next August with this setup.
bownarra:
Do you get your shafts from tiger?
I got a few thousand a while ago and the measured spines were quite far off the mark and I do wish they wouldn't sand the nodes so far. Most are good but the odd one broke at the nodes when final straightening because they were too aggressively reduced.
razorsharptokill:
These shafts are from Khans arrows (Todd Mathis). So far I am very pleased with them.
Todd Mathis:
--- Quote from: razorsharptokill on December 03, 2019, 11:45:05 am ---These shafts are from Khans arrows (Todd Mathis). So far I am very pleased with them.
--- End quote ---
You know, I just realized why you like those nails! It really is a clever idea. I went about solving this differently, but I have to say I never thought to do it the way you do with those nails...I think...
Let me see if I understand...If you add weight up front, you have a higher FOC. That's nice, but by making the arrow heavier, you are increasing the dynamic spine so that the arrow will fly stiffer. Then you can put on a heavier head...like a bigger broad head. Am I getting why you guys are using nails? Why not just put a heavier head on to start with? I assume you also using the nail to strengthen the spine up front for penetration? Gotta say...I'm looking forward to OJAM. Hope some of you guys are going.
Pat B:
Todd, adding the nails to the front of the arrow will decrease the dynamic spine as does adding a heavier head. It doesn't stiffen the spine. If he added something to stiffen the center of the shaft like a bamboo skewer with very little added weight he would increase the spine. Most of the bending of the shaft when shot is in the center 1/3 of the shaft so by changing the bending of the center of the shaft you change the dynamic spine. Adding weight to the front, whether it be a heavier head or a nail or both will decrease the dynamic spine.
The dynamic spine of the shaft is increased or decreased in 2 ways. Whether by adding or subtracting weight or adding or subtracting length beyond the standard you can change the dynamic spine.
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