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Spineing a flight arrow

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Selfbowman:
Can an arrow be spined in such a way to give you more clearance at the fletchings? Also where do you hang a 2# weight on a barrel tapered arrow? At balance point?

Jim Davis:
Hey Arvin, I've never been into flight shooting, but I can see there are a lot of things that could slightly change the outcome.

It seems to me that stiffness can have opposite effects at the extremes. The sooner the arrow quits flexing the less drag, but the stiffer the shaft, the more friction there will be at the arrow pass. There is probably a sweet spot somewhere in the spine range.

The same kind of balance is at work in the feather size/shape question.

Have fun testing. 8-)

willie:

--- Quote from: Selfbowman on October 01, 2024, 08:31:44 am ---Can an arrow be spined in such a way to give you more clearance at the fletchings? Also where do you hang a 2# weight on a barrel tapered arrow? At balance point?

--- End quote ---


I taper atlatl darts only on the rear 1/3 and see the aft end wiggle in flight while the dart as a whole flexes less. dunno if there is something worth experimenting with there for arrows.
if I had a barrel taperd arrow that flew well, I would mesuure the spine/deflection at multiple places for future reference.

Eric Krewson:
My Adams spine tester has 26" centers, the weight goes in the center. I don't take the deflection my tester shows as being exact but as a baseline starting point for arrow tuning.

I don't know squat about flight arrows but it seems like an arrow that comes out of paradox quickly would be the most efficient rather than one that bends this way or that for a purpose.

I paper tune my arrows to get a bullet hole with 3 feather cuts at 6ft. If I had a chronograph and checked I would suspect this would be the fastest arrow out of my bow but don't have the data to back up this theory.   

Selfbowman:
Eric I have the same Adams tester. I also have one that hangs on the wall. My question is where to hang the weight when the arrow is tapered so the balance point is toward the nock not the point. I’m thinking that the balance point might be the spot to hang the weight.

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