It is essentially a measurement of the stiffness of an arrow that is used to determine its spine rating. The identical Easton arrow is available in a number of different stiffnesses: the lower the number, the stiffer the arrow. The stiffest arrow is the lowest number. For example, a 330 spine arrow is stiffer than a 500 spine arrow, which is stiffer than both.
- The “spine” of an arrow is a measurement of how much it flexes or bends. Arrow shafts are categorized according to their spine dimensions, and each manufacturer assigns a unique number to each shaft. The spine number may be found on the label attached to the arrow.
What should my arrow spine be?
In the case of an arrow with a 100-grain point, Gold Tip’s spine chart advises using an arrow with a 500-spine grade, according to the chart. The chart asks for a 400 spine in that same 50-pound bow, but with an arrow length of 30 inches instead of the standard 20 inches.
What is a 400 spine arrow?
In the case of an arrow with a 100-grain point, Gold Tip’s spine chart advises using an arrow with a 500-spine rating. The chart asks for a 400 spine in that same 50-pound bow, but with an arrow length of 30 inches instead of the standard 25 inches.
Does arrow spine really matter?
The spine chart for Gold Tip advises an arrow with a 500-spine grade if the arrow is carrying a 100-grain point. The chart asks for a 400 spine on that same 50-pound bow, but with an arrow length of 30 inches instead of the standard 20 inches.
What is a 350 spine arrow?
Spine that is not moving The spine of the arrow is equal to the product of the number of inches the arrow bends multiplied by 1,000. As a result, an arrow with the number 350 bends. When the weight is added, the height is 350″. This has a direct relationship to the arrow “bend.”
Are 340 or 400 arrows heavier?
400 arrows are significantly more powerful than 500 arrows. The strength of 500 arrows is greater than the strength of 600 arrows. A weaker arrow is referred to be “softer.” Bows with draw weights of 15–35 pounds typically require 600 arrows, while those with draw weights of 35–55 pounds require 500 arrows, those with draw weights of 55–75 pounds require 400, and bows with draw weights of 75–95 pounds require 340.
What size arrows for a 60lb bow?
In addition, we highly advise you to use an arrow with at least 5 grains of weight per pound of draw weight while shooting (if you are shooting a 60 lb. bow, you should use and arrow of not less than 300 grains ). This includes your field point or broadhead, among other things.
What is a 340 spine arrow?
The length of your arrow shaft must also be appropriate for your bow. It is assumed that the arrow has a stiffer spine if the number is less. A carbon-fiber weave with an aluminum core tube with a diameter of 60 and a spine stiffness rating of 340, for example, is denoted by the numbers 3-60/340.
What does 340 mean on an arrow?
In the same way that combination arrows have a firmer spine, a lower number indicates a more flexible spine. The result is that the stiffer and heavier the spine, the higher the value, whereas the lighter and more flexible the spine is indicated by a higher number, such as 340.
What is stiffer 340 or 300 spine?
Registered. On my iPad, I entered your parameters into archers advantage and found that the 300 spine was a little stiff, but the 340 spine was just on the border between good and poor. Perhaps someone who has OT2 could run your setup through it, since it can be more precise than AA in some situations. However, it is usually preferable to be on the stiff side rather than the weak side.
What happens if arrow spine is too stiff?
During flight, if the arrow’s spine is either too weak or too stiff, the arrow will not be able to fix itself as quickly as it should. Unless the arrow is strong and does not continue to flex (has a low spine grade), it will deviate away from its intended target. While an arrow will unavoidably twist and spin while in flight, you don’t want it to wobble, which is what you want to avoid.
What happens if your arrows are too lightly or heavily spine for your bow?
Every arrow shaft has a certain amount of stiffness known as spine, which determines how resistant it is to bending. Because of the excessive motions caused by the “archer’s paradox,” arrow flight and accuracy will suffer as a result of using arrows that are either too lightweight or strongly spined for your bow.
Is it better to shoot a stiffer arrow?
The less bend there is in the arrow, the stiffer it is. The less curve there is, the more energy is transferred to forward movement and the less drag on the arrow is generated. It appears that, when using a compound bow with a release assist and a correctly set up rest, logic would suggest that the stiffer the arrow should be, rather than the less stiff.
How long should arrows be for a 30 inch draw?
According to the Easton spine chart, a spine of 250 should be used for a 30-inch arrow fired with a bow set at 70 pounds. If you shorten that arrow length to 28 inches, the spine chart suggests a 340 spine length for you. Compared to the 250, this is really two spine classifications weaker. Is it possible for an arrow to be excessively long?
How heavy of an arrow should I shoot?
If you want to target practice, you want an arrow that weighs around 5 to 6 grains per pound of draw weight in total (shaft, vanes, insert, nock, and field point combined). As an example, if your bow has a draw weight of 60 lbs., you should use arrows with a total weight of between 300 and 360 grain.
What size arrow do I need for a 28 inch draw?
You’d need an arrow that’s roughly 27 inches in length if you have a 28-inch draw length and want an arrow that terminates at the front of the riser on your bow. However, if you need to weaken the spine of your arrow, you may make your arrow length a little longer. Your arrows should not be too short for the sake of your own safety.