Main Discussion Area > Arrows
longer more accurate?
Mechslasher:
i also shoot arrows between 30-34" long for my 28" draw. if i remeber the physics right, the longer the arrow, the more of the arrow is pointed at the target so the rest of the arrow doesn't have to work as hard to get on target. this translates into better accuracy. i also think longer arrows, matched correctly to the bow, correct paradox faster than shorter arrows. as to weight, a heavier arrow will stay on the string longer. this causes the arrow to absorb more energy and reduces the vibration after the shot that the bow transfers to the shooter. there comes a point of deminishing returns. you just need to experiment with your bow to see what that weight is in arrows. i like around 12-15 grains per pound and 18-20% foc.
markinengland:
Badger,
I don't want to be argumentative, but I'm not sure I totally agree with you. I agree that the longer the draw length the stiffer the arrows needs to be
From what I have seen spine is largely about the need for the part of the arrow that is behind the bow to flex around the bow on the shot. As the arrow get longer a larger part of the arrow is in front of the bow and simply acts as a heavy point. After a while that doesn't seem to matter much.
The south american indians use very very long arrows, but they are not mega stiff. In fact they are weak enough when using long fishing arrows to droop quite a bit! Even without feltchings they still work.
To take this to an extreme look at using an arrow that is infinately long. The part of the arrow that is behind the bow even at a 30 inch draw is now so insigificant it doesn't matter and mathmatically doesn't exist, non of the arrow has to bend around the bow, all the arrow is pointing at the target and spine is irrellevant! Perhaps the longer the arrow length in front of the bow at full draw the less you need to compensate in spine?
I have found that arrows between 48 and 60 inches long are quite forgiving of spine and various bow weights. They seem to go better from bows that give a long hard push rather than a sudden fast one. It would be interesting to see some slow motion video of long arrows being shot. There is a point at which you can see that the "spine" of the shaft is not right for a fast more powerfull bow, bit it seems to me that something other than and maybe more complex that normal spine issues is involved. I've had the feeling that if the same stiffnes shafts had been longer they would have worked better rather than wagging around as if they were too stiff!
Stingray45:
Sorry to hi-jack the thread a bit but I think I have a relevant question to this arrow length business. I have some 32" POC shafts that are spined for 60#-65# @28". I just got a new longbow that is marked 47#@28" but is really pulling a little heavier, closer to 50# on the nose. All that being said, how much spine to be gained or lost by leaving the arrows longer. For example, if I want those arrows that are 60#-65#@28" what length do I want them to be spined for the 50#? I thought I heard 3# per inch somewhere and 5# per inch somewhere else. Since they are 32" long, from back of point at best I'm going to be able to get 31", should that work well or would 30" back of point be better?
JW_Halverson:
There are literally an infinite number of variables at work here. You are going to be pretty close by leaving them full length. Try shooting them without fletching, if they come off the string and the nock end kicks to the left, try adding heavier points. (this applies if you are shooting right handed, if left handed just switch left for right)
You can get field points in quite a few different weights, and the heavier the points you use the more "forward of center" (FOC) the arrow becomes as well as making the arrow act like a lighter spine.
George Tsoukalas:
I cut my arrows 29 in bop. I draw 26 in. I do it so I can have more weight. I really don't feel it allows me to shoot more spine ranges though. Jawge
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