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ABO Hunting points
JW_Halverson:
Ok, lemme get this straight in my head.
The point is at it's thickest somewhere just ahead of the base, right? So as the thickness of the point passes thru, for instance, the rib you pictured, it would open a passage that the sinew wrap may pass thru with less resistance? Ok, I can see that.
I think there was something in the Ashby research about how a shaft slightly smaller than the cross section of the broadhead suffered less from resistance/drag/friction from the wound channel and gained penetration.
Outbackbob48:
John, I think this may have been a sid e benfit and not the original intent, The bases need to be thin so there is some shaft dia left to work with. :o Just my .02 worth Sometimes I think we tend to over think alot of primitive stuff, NA people were excellent trackers so a less than perfect hit was no big deal, Didn't have to punch a clock at 8 in the morning the next day. :D Bob
iowabow:
--- Quote from: Outbackbob48 on December 12, 2015, 02:40:40 pm ---John, I think this may have been a sid e benfit and not the original intent, The bases need to be thin so there is some shaft dia left to work with. :o Just my .02 worth Sometimes I think we tend to over think alot of primitive stuff, NA people were excellent trackers so a less than perfect hit was no big deal, Didn't have to punch a clock at 8 in the morning the next day. :D Bob
--- End quote ---
My thought was about the point having a constant thin thickness without the center thickness. Sorry I did not make that clear my fault. Bob it a trait of mine to over think things just thought I would throw it out there.
iowabow:
--- Quote from: JW_Halverson on December 12, 2015, 02:03:06 pm ---Ok, lemme get this straight in my head.
The point is at it's thickest somewhere just ahead of the base, right? So as the thickness of the point passes thru, for instance, the rib you pictured, it would open a passage that the sinew wrap may pass thru with less resistance? Ok, I can see that.
I think there was something in the Ashby research about how a shaft slightly smaller than the cross section of the broadhead suffered less from resistance/drag/friction from the wound channel and gained penetration.
--- End quote ---
yep that says it better
Outbackbob48:
John, It takes extra work to make a point flat or same thickness front to back. the natural thinning process leaves our points naturally thicker towards center. NA says good enough were not making art we are making meat , Let's Go! :D Again just my.02 worth, :o Heck any ole knapper can make points with a thick middle, just look at my points for example. It's hard to make flat thin pretty ones. ;D Bob
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