Arrow Spin?
03-11-2008 | 03:33 PM
#1
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Nontypical Buck
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Arrow Spin?
Well crap! GMMAT has got my mind rolling. So if an arrow with more helical spins more during flight, would it not create a faster arrow with straight vains?Also, if an airplane's wings do not spin, nor a jet's, then why would you want an arrow to spin? For stabilization? A plane or jet does not have a broadhead attached to the front, but the principle is still there? Right?
03-11-2008 | 04:00 PM
#2
Nontypical Buck
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RE: Arrow Spin?
ORIGINAL: LouisianaTomkat
Well crap! GMMAT has got my mind rolling. So if an arrow with more helical spins more during flight, would it not create a faster arrow with straight vains? yes, you have to give up a little speed to gain accuracyAlso, if an airplane's wings do not spin, nor a jet's, then why would you want an arrow to spin? because you want the arrow to fly straight. A planes' wings create lift not aimFor stabilization? A plane or jet does not have a broadhead attached to the front, but the principle is still there? Right? no, it's totally different. a plane's wing gives lift, the wing rutters provide the steering
Well crap! GMMAT has got my mind rolling. So if an arrow with more helical spins more during flight, would it not create a faster arrow with straight vains? yes, you have to give up a little speed to gain accuracyAlso, if an airplane's wings do not spin, nor a jet's, then why would you want an arrow to spin? because you want the arrow to fly straight. A planes' wings create lift not aimFor stabilization? A plane or jet does not have a broadhead attached to the front, but the principle is still there? Right? no, it's totally different. a plane's wing gives lift, the wing rutters provide the steering
03-11-2008 | 04:02 PM
#3
Giant Nontypical
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From: Pittsburgh, PA
RE: Arrow Spin?
More spin/helical slows your arrow quicker(quickspins).
A plane and an arrow are not really comparable. And actually the wings are what stabilizes a plane.
When you shoot/throw a projectile, spinning stabilizes it. Bullets are spun with rifled barrels. Footballs are best thrown as a spiral, arrows stabilize best when spinning.
Why is a knuckle ball such an effective pitch in baseball? NO spin=erradic flight=tough to hit.
Do a google search on "lift" & "drag" when applied in physics. You'll learn some things.
A plane and an arrow are not really comparable. And actually the wings are what stabilizes a plane.
When you shoot/throw a projectile, spinning stabilizes it. Bullets are spun with rifled barrels. Footballs are best thrown as a spiral, arrows stabilize best when spinning.
Why is a knuckle ball such an effective pitch in baseball? NO spin=erradic flight=tough to hit.
Do a google search on "lift" & "drag" when applied in physics. You'll learn some things.
03-11-2008 | 06:05 PM
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Nontypical Buck
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RE: Arrow Spin?
So I guess there goes the whole "Aerodynamics" thingamajigger? I am thinking the lower profile the fletching and the straighter it is, the more accurate and faster the arrow will be. On a long shot, at the speeds of todays bows, I can not see where a helical will amount to a hill of beans difference. jmho Now if you have some of the gosh-awful huge bladed broadheads on an arrow with blazers, I guess it could pose a problem, being that the huge blades of the broadhead would overtake the steering of the fletching. Does that make sense?
LT
LT
03-11-2008 | 06:25 PM
#5
Giant Nontypical
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From: Pittsburgh, PA
RE: Arrow Spin?
Thegain in speedwith straight fletch, is tiny. Thinking that the arrow will be more accurate with smaller fletch is also false. Fletch is there to stabilize the arrow. So if you inflict some force at the moment of release, fletching is going to bail your arrow out(lots of other variables too)
The more tuned a bow is the less fletch is needed to stabilize it. The better aerodynamic the head the easier it is to control with less fletch.
If you grew up back in the day when we still shot big huge fixed blade heads, and finger release with compounds, you'd certainly understand the desire for helical. Helical was your friend. Still is in the trad world.
The more tuned a bow is the less fletch is needed to stabilize it. The better aerodynamic the head the easier it is to control with less fletch.
If you grew up back in the day when we still shot big huge fixed blade heads, and finger release with compounds, you'd certainly understand the desire for helical. Helical was your friend. Still is in the trad world.
03-11-2008 | 07:31 PM
#6
Boone & Crockett
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RE: Arrow Spin?
Fletchings are there to create drag like thevertical wingon a jet. But an arrow you don't have horrizontal wings to create lift. If you fletcharrows with at least some offset it creates drag as well as spin. So not only do you have drag but you also create a gyroscopic effect with the spinning of the arrow which makes it twice as stable as perfectly straight fletchings alone.
