How are arrow spines measured?
The Archery Trade Association standard for measuring arrow spine requires this test: Suspend a 1.94-pound weight at the shaft’s center, and use a machine to measure the deflection or bend at that point. Deflection is measured in inches.
What is the spine of a wooden arrow?
Spine is a standard measurement of the amount of flex in a shaft. The old wood arrow, or AMO, spine standard has 26″ centers (shaft supported by uprights that are 26″ apart) with a 2# weight supported at the center. The actual spine measurement is the deflection or displaced distance measured at the center.
How much spine should my arrow have?
Adding weight to the front of the arrow weakens its spine. That’s why Gold Tip recommends a 400 spine for a 27-inch arrow with a 100-grain point shot from a 60-pound bow, but also recommends a 340-spine arrow if its length and draw weight stay the same, but its point weighs 150 grains.
What type of wood is best for making arrows?
Woods are various, but currently the most common is pine. Port Orford cedar is a traditional favourite; it is lighter and holds its straightness better than pine. Good shafts in this material are however more difficult to get hold of. Other woods are used such as; ash, birch, poplar, hazel, beach, and oak.
How do I choose arrow spine?
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).
What does the 340 on an arrow mean?
stiffer spine
As with combination arrows, a smaller number means the arrow has a stiffer spine. Therefore, a value of 340 indicates a stiffer and heavier spine while a value of 500 indicates the lightest and most flexible spine.
What does 500 spine mean in arrows?
The spine rating of an arrow is simply a measurement of its stiffness. The same Easton arrow comes in a variety of stiffness: the lower the number, the stiffer the arrow. For example, a 330 arrow is stiffer than a 500 spine arrow.
What is the diameter of a wooden arrow?
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/shafts come in 5# spine groups as they can be a bit more “touchy” on getting the right spine.
What is standard arrow diameter?
S “standard” Diameter is 6.5MM, H “Reduced Diameter” is 6MM, X “Micro Diameter” is 5MM, and our “Ultra-Micro” G Diameter is 4MM (utilizing Deep Six components.) The new nomenclature immediately allows you to relate one size to another, and makes it a lot easier to select the right components for your preferred arrow.
Is pine a good wood for arrows?
Better target arrows are made of imported Norway Pine and Port Orford Cedar. Excellent hunting arrows are also made of these woods.