Question on single bevel and helic

[Bob B.]

Well, perhaps a stupid question, but I will ask anyhow.  Does more helic on an arrows fletch in turn equate to more torque generated on the sinlge bevel or does it not matter if there is any helic at all?

Bob.

[BernieH]

Doesn't matter how much helical the fletch has as long as its matched to the broadhead. The bone breaking torque actually comes from the bone itself as it resists being penetrated.

[Bob B.]

Thanks Bernie, I appreciate the answer so quickly.

Bob.

[reddogge]

It would be my belief that once the arrow is delivered to the animal by the fletch the influence of the fletch stops and the influence of the single bevel starts.

[Stiks-n-Strings]

sorry to jump post but I got a ?
I shoot left wing, Do I need a left wing bevel?
Thanks Kris

[magnus]

Kris yes you do. If not they will work aginst each other.

[NorthernCaliforniaHunter]

Yes, bevel should match, or so goes the general knowledge. It would be interesting to see the difference between matching and opposite bevel/twist combinations in a test environment.

[Bob B.]

Kris, a sharp broadhead is waht you need to cut cleanly, thus any bevel will do to dispatch an animal.  If you want the broadhead to turn in the animal, to torque and split bone, than yes a left bevel for a left helic, and a right bevel for a right helic.

Bob.

[Slufoot]

Hey NorthernCaliforniaHunter, That is an absolutely great idea! Maybe TBM could do this, it sure would make a great article.


You know reddogge makes a good point and NorthernCaliforniaHunter's idea would let us know the real story.

GOOD SHOOTING!
Slufoot

[nightowl1]

anyone shoot single bevel with straight fletch or offset?

[Steertalker]

Bob.B,

This is my opinion and only an opinion, no science to back it up.  Not only should the bevel match the helical of the fletch, but the rate of rotation should match as well.  The bevel on a Grizzly, for example, is designed to make it rotate through the animal at a farely slow rate; in my experience about 1/4 revolution from one side of a deer to the other.  If you have a lot of fletch with a pretty a good helical inducing a farely high rate of spin on the arrow, then quite a bit of energy is used up at the moment of impact, inducing torque into the arrow shaft, thus reducing penetration.  I personally shoot 190 gr Grizzly El Grandes with three 4 inch low profile feathers set with very little helical.  My arrows corkscrew through the animal with very little resistance rather than drilling through.

If this sounds like hogwash then experiment yourself with different angles on your helical.  A fast spinning BH will cause tremendous blunt force trauma.  My set up virtually slips through with no blunt force trauma whatsoever.

Brett

[Bob B.]

Hey Brett,

Your opinion is interesting.  I may try this as I am looking to make a few arrows this weekend.  Perhaps I will try a test of different helical offets just for the sake of trying it.

Bob.