Quick Answer: How Do You Weaken Arrow Spine?

What does arrow spine mean?

Arrow spine in its simplest definition is the measurement of the arrow’s stiffness.

It measures how much an arrow will bend or flex.

For example, an arrow with spine number 400 is stiffer than a 600 spine arrow..

How do I increase my arrow spine?

to increase spine would be to decrease draw weight, meaning shooting less fps making the arrow stiffer. to decrease spine would be to raise draw weight meaning shooting more pounds producing more fps.

What happens if an arrow is too short for the bow?

Bending, known as “archer’s paradox,” occurs when an arrow is released from the bow. … 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.

Can arrows be too long?

It can’t hurt if it’s too long if it’s shoots well for you. Too long and you have to have more spine which adds arrow weight, more fletching, and heavier tips for proper FOC (arrow balance).

How heavy should an arrow be?

Click here to learn more. For reference, light arrows weigh about 350 grains, a typical arrow weighs 420 to 500 grains, and a heavy arrow weighs over 600 grains. Bentcik said few Americans use arrows weighing 700 grains or more unless they’re shooting traditional equipment.

Why are my arrows fishtailing?

Often only a slightly suspect loose of the arrow can cause considerable fishtailing. … A clean shelf with a scuff mark left by a vane hitting it is a clear sign of a “clearance problem.” Clearance problems stem from nocking point height, centershot (arrow rest) misplacement, and arrow spine issues.

What does 500 spine mean in Arrows?

“Spine” is the measurement of the arrow’s flex or bend. Arrow shafts are sorted by spine measurements, and manufacturers designate them with a number. … Some common numbers are 350, 400, 500 and 600, but they vary by manufacturer.

How do I know if my arrow spine is too weak?

A lighter tip INCREASES an arrow’s spine (makes it act more stiff). If the arrow is too stiff it will favor the left side while if the arrow is a bit weak, it favors the right side.

Are my arrows 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). … An “over-spined” arrow can lose energy and velocity as it veers off-target.

What does 400 mean on an arrow?

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.

Are 340 or 400 arrows heavier?

340 arrows are stronger/stiffer/harder in “spine” than 400 arrows because they bend less. 400 arrows are stronger than 500 arrows. … A weaker arrows is “softer”. Generally 600 arrows are for bows from 15–35 pounds in draw weight, 500 for 35–55 pounds, 400 for 55–75 pounds, and 340 for 75–95 pounds.

How do I know what spine arrow to use?

The first variable you need to look at is draw weight. As draw weight increases, so should arrow rigidity (spine). Also, we strongly recommend that you use an arrow with at least 5 grains of weight per pound or draw weight (if you are shooting a 60 lb. bow, you should use and arrow of not less than 300 grains).

How do you weaken arrows?

Nock weight or rear weight – Adding weight to the rear of the arrow will increase or stiffen the arrow’s dynamic spine while removing weight from the rear of the arrow will decrease or weaken the arrow’s dynamic spine.

What happens if arrow spine is too stiff?

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 does brace height affect arrow spine?

Raising the brace height reduces the dynamic spine of an arrow (or compensates for a stiff arrow). Lowering the brace height increases the dynamic spine of an arrow (or compensates for a weak arrow). For practicality: If your arrow is acting stiff, bring it closer to center or rasie the brace height.