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Single bevel vs. double bevel

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jeffp51:

--- Quote from: Pat B on January 06, 2020, 09:17:47 pm ---They both work well for taking game.I think the thing about single bevel if in combination with fletch helical that allows the arrow to spin the same as the bevel the momentum, both forward and in spinning will split bone if it's hit plus it supposedly aids penetration.

--- End quote ---

which way does the single bevel rotate?  How do I match that to my fletching?  I usually have left-wing fletches.  I think they rotate counter-clockwise (Anti-clockwise if Del is watching :-) ).  which bevel would also rotate in the same direction and why?

Pat B:
I think you want the bevel on the left for left hand fletching.

StickMark:
Artcher1, I followed you advice.  I've often wondered about those tip.  Double beveling 8 tips took an hour.  They feel much better. Thx for tip.

Little John:
I was recently was gifted some large chunks of foam (16inch foam pipe line pigs), I thought that they would be like a poor mans 3d target. When shot with zwickey double bevel heads they made a slit on entrance and exit, but  grizzlie single bevel heads cut out a tornado funnel shaped piece of foam, indicating a much greater wound channel. I have always liked the single bevel, and they are easy to make and sharpen. If you use the wrong wing fletch they will make only a slit on exit. If you really think about it the single bevel is the only way to go.

Tommy D:
 For what it’s worth I am a Professional Hunter in Tanzania and I have guided several bow hunts for Cape Buffalo. The single bevel heads do everything that Ashby says - but their main advantage is when they hit heavy bone. You could shoot a double bevel and a single bevel at an animal and if neither hit heavy bone you would not notice much difference in penetration but as soon as you introduce heavy bone, the single bevel is streaks ahead. What it does is twist as it passes through the bone and this causes the bone to split. This means the bone is not creating friction on the shaft passing behind. I had a long and heated difference of opinion with a client who brought a German kinetics double bevel saying he had tested it against a single bevel on a piece of plywood in front of a foam target and it penetrated better than the single bevel. I pointed out to him that a much fairer test would be a piece of lumber - which would split the same way bone does. There are no downsides to single bevel heads and lots of upsides. What Ashby says is spot on. I have tested various arrows on dead buffalo and he is completely on the money. If you shoot a single bevel into a block foam target you will notice as you pull it out that the arrow has twisted as it penetrates.

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