Shield Cut Vs. Parabolic??
08-12-2008, 08:38 AM
#21
Giant Nontypical
Join Date: Feb 2003
Location:
Posts: 7,571
RE: Shield Cut Vs. Parabolic??
Personally, I like parabolic because they are extremely quiet. For looks I love the Pope and Young cut (bottom three), but they are aweful noisy.
They all will stabilize and arrow though.
They all will stabilize and arrow though.
08-12-2008, 09:57 AM
#22
Giant Nontypical
Join Date: Feb 2003
Location: Jackson, Missouri
Posts: 7,051
RE: Shield Cut Vs. Parabolic??
Oh, maybe something else to consider is your shooting distance. Feathers slow down rapidly after about 45 yards,
Independent tests by bow testing authority Norb Mullaney have shown that a feather fletched arrow is still traveling 4 ft./sec. faster than plastic fletch, 29 yards down range. At all normal hunting ranges, feather fletched arrows travel faster, drop less, and arrive sooner than plastic fletched arrows.
[blockquote]Further tests by Dave Holt showed that the feather fletched arrow was faster than the identical plastic fletched arrow out to 41 yards. The feather fletched arrow then matched the plastic fletched arrow out to 61 yards (the limit of the test range). Through out the 61 yard range, the feather fletched arrow arrived at each distance in less time than the vane fletched arrow.
[/blockquote]
[blockquote]Further tests by Dave Holt showed that the feather fletched arrow was faster than the identical plastic fletched arrow out to 41 yards. The feather fletched arrow then matched the plastic fletched arrow out to 61 yards (the limit of the test range). Through out the 61 yard range, the feather fletched arrow arrived at each distance in less time than the vane fletched arrow.
[/blockquote]
08-12-2008, 10:06 AM
#24
Dominant Buck
Join Date: Oct 2005
Location:
Posts: 21,043
RE: Shield Cut Vs. Parabolic??
Hey Greg....
I got accused of reading too much into one test....so I'll just ask the parameters of this one, up front.
"All things being equal"? Were the two arrows FOC the same?
Were they identical in weight (I'm guessing you would have had to add nock weight to the feather arrowsor something else to achieve this?)?
I guess when he says "identical".....does that means "the same" except one is fletched with vanes and the other with feathers?.....Or....is the above true?
Just curious. Reason I ask is.....the difference in weight, alone, could make up "some" fps differences. Right?
I got accused of reading too much into one test....so I'll just ask the parameters of this one, up front.
"All things being equal"? Were the two arrows FOC the same?
Were they identical in weight (I'm guessing you would have had to add nock weight to the feather arrowsor something else to achieve this?)?
I guess when he says "identical".....does that means "the same" except one is fletched with vanes and the other with feathers?.....Or....is the above true?
Just curious. Reason I ask is.....the difference in weight, alone, could make up "some" fps differences. Right?
08-12-2008, 10:09 AM
#25
Join Date: Mar 2004
Location:
Posts: 13,082
RE: Shield Cut Vs. Parabolic??
Yeah, now that's some sweet information right there.....That sure goes against what I'm seeing though. I'm shooting at 60 yards a lot here lately, and them babies drop off the planet quick, fast, and in a big hurry. I'm certainly not arguing the man, but don't feathers stabilize better because they disrupt more air; wind resistance? And if so, would that not cause them to slow down more quickly? Or does the weight difference negate that?
08-12-2008, 10:13 AM
#26
Dominant Buck
Join Date: Oct 2005
Location:
Posts: 21,043
RE: Shield Cut Vs. Parabolic??
It's my understanding, Mo......that the feathers are "better" at short range.....but that your point of diminishing returns kicks in around 35-40yds. (in terms of stabilizing your arrow/accuracy).
Of course....you'd HOPE that both had that job (stabilization)covered LONG before they got to those distances.
Of course....you'd HOPE that both had that job (stabilization)covered LONG before they got to those distances.
08-12-2008, 10:19 AM
#27
Join Date: Mar 2004
Location:
Posts: 13,082
RE: Shield Cut Vs. Parabolic??
Jeff, that makes sense. But again, wouldn't they be "better" because they disrupt more air? And, wouldn't that cause them to slow down more quickly? If that's the case, I can understand why they are better at short range. And, I can see why at around 40 yards the vane has "caught up" in regards to stabilization. And I certainly understand the weight difference causing a feather fletched arrow to leave the bow faster....But again, wouldn't it also slow down faster?
I don't want to seem like I'm arguing an authority on the subject (Norb) but that goes against what I would think....Not that what I think is right, but you know what I mean....
I don't want to seem like I'm arguing an authority on the subject (Norb) but that goes against what I would think....Not that what I think is right, but you know what I mean....
08-12-2008, 10:25 AM
#28
Dominant Buck
Join Date: Oct 2005
Location:
Posts: 21,043
RE: Shield Cut Vs. Parabolic??
But again, wouldn't it also slow down faster?
Now one "could" throw "drag" into that mix and they may be able to argue (as you're doing....well....not "arguing"
) that would offset the weight issue.I just don't know, though.
08-12-2008, 10:29 AM
#29
Nontypical Buck
Join Date: Aug 2006
Location: Southern MD
Posts: 2,520
RE: Shield Cut Vs. Parabolic??
ORIGINAL: mobow
Yeah, now that's some sweet information right there.....That sure goes against what I'm seeing though. I'm shooting at 60 yards a lot here lately, and them babies drop off the planet quick, fast, and in a big hurry. I'm certainly not arguing the man, but don't feathers stabilize better because they disrupt more air; wind resistance? And if so, would that not cause them to slow down more quickly? Or does the weight difference negate that?
Yeah, now that's some sweet information right there.....That sure goes against what I'm seeing though. I'm shooting at 60 yards a lot here lately, and them babies drop off the planet quick, fast, and in a big hurry. I'm certainly not arguing the man, but don't feathers stabilize better because they disrupt more air; wind resistance? And if so, would that not cause them to slow down more quickly? Or does the weight difference negate that?
I also suspect that blazers would be faster than 4" plastic vanes and more equal to feathers in a similar test.
08-12-2008, 10:50 AM
#30
Giant Nontypical
Join Date: Feb 2003
Location: Jackson, Missouri
Posts: 7,051
RE: Shield Cut Vs. Parabolic??
Jeff, I'm sort of like you... I think identical means identical.
As far as parabolics being accurate? I shot a 3d shoot Sunday with some friendson here, and did "OK" but wasn't happy with the results... Of course, I had just broadhead-tuned my bow the night before really quickly to get ready for Colorado, and had only shot one three-arrow group with my new heavier arrows at 20 yards.
I came home that afternoon and found out that the extra FOC and mass necessitated an increased pin gap from 30 out to 50. After I got my sights dialed in, this was my first 30-yard group. Someone asked a few weeks ago why I use pin nocks? For this reason right here.... Sure would have been nice to have had 'em on this dozen as well.
As far as parabolics being accurate? I shot a 3d shoot Sunday with some friendson here, and did "OK" but wasn't happy with the results... Of course, I had just broadhead-tuned my bow the night before really quickly to get ready for Colorado, and had only shot one three-arrow group with my new heavier arrows at 20 yards.
I came home that afternoon and found out that the extra FOC and mass necessitated an increased pin gap from 30 out to 50. After I got my sights dialed in, this was my first 30-yard group. Someone asked a few weeks ago why I use pin nocks? For this reason right here.... Sure would have been nice to have had 'em on this dozen as well.