Table of Contents
How do I know what arrow spine to use?
Static spine is how much an arrow reacts when a 1.94 lb. weight is hung from the center of the arrow. To calculate this, arrows must be 29” long and supported at two points 28” apart. The number of inches the arrow bends multiplied by 1,000 is the arrow’s spine.
What is the difference between 400 and 500 spine arrows?
The numbers refer to the spine of the arrow. The different spines refer to the stiffness, a 400 spine arrow is generally for bows 40-60 lbs. 350 spine is for bows roughly 55 – 75 lbs, and a 500 spine arrow is for bows roughly 30 – 50 lbs.
How do I choose arrow weight?
If you want to target practice, you want the arrow to weigh in total (shaft, vanes, insert, nock and field point combined) around 5 to 6 grain per pound of draw weight. So if your bow has 60 lbs. of draw, you want to use arrows that weigh in total between 300 and 360 grain.
How do you choose arrow length?
The standard way to measure arrow length is from the back of the point to the throat of the nock. Your draw length and arrow spine will influence your arrow length. If you’re a 28-inch draw length and want an arrow that ends at the front of the riser, your arrow length would be around 27 inches.
What happens if your arrows are too lightly or heavily spine for your bo?
If your arrows are too lightly or heavily spined for your bow, the “archer’s paradox” movements will be extreme, resulting in poor arrow flight and loss of accuracy. Arrow manufacturers publish selection charts that match bow weights to proper arrow spine. Your local archery shop will help you match your gear.
How long should my arrows be for a 28 draw?
If you’re a 28-inch draw length and want an arrow that ends at the front of the riser, your arrow length would be around 27 inches. However, your arrow length can be longer if you need to weaken the spine of your arrow. For safety reasons, your arrows shouldn’t be cut too short.
How long should arrows be for a 30 inch draw?
The Easton spine chart recommends a spine of 250 for a 30-inch arrow shot from a bow set at 70 pounds. Cut that arrow length down to 28 inches, and the spine chart recommends a 340 spine.
How do I know if my arrow spine is too weak?
So how can you tell if your arrow spine is too weak or too stiff? The best way to tell if an arrow is too stiff or too weak is to videotape the flight of the arrow. Watching the flight of your arrow, you’ll be able to see if the arrow is veering to the right (too weak) to the left (too stiff).
Can I use a stiffer spine arrow?
Registered. Too stiff an arrow usually just slows the bow down with a heavier arrow. Too weak a spine arrow usually yeilds a faster lighter arrow. But the light spine cause the arrow to shoot way off the mark as the range increases.
How do you know what size arrows to use?
How do I choose the right size of my Arrow spines?
The more draw weight that you have, the higher (stiffer) your arrow spines number should be. The longer the arrow, the higher the spine number should be. The more weight the arrow point has, the stiffer the arrow spine should be. Once you know your numbers, the next step is to open your arrow selection chart.
How many inches does a 500 Arrow Bend?
The arrow must be 29” in length and supported by two points, which are 28” apart. The number of inches the arrow deflects or bends X 1000 due to the weight is the spine size or measurement of an arrow. So, a 500 arrow bends.5-inches when the weight is applied.
How many sizes does a carbon Arrow come in?
For most carbon arrows, 3 to 5 sizes covers virtually every application. So Easton simplified the sizing system by basing the sizes on actual spine deflections.
What size arrows do I need for hunting?
Most wood arrows come in diameters of 5/16″, 11/32″, and 23/64″. Be sure to use a test kit or at least use a spine chart when choosing spine. Wood arrows and shafts come in 5# spine groups as they can be a bit more ‘touchy’ on getting the right spine.