Selecting the right arrow spine is a crucial step in archery, and making sure to get the best fit is important for accuracy and safety. Spine selection is the amount of force required for an arrow to flex (deflection) when it’s shot from a bow. The spine of the arrow should be stiff enough to avoid excessive deflection, yet flexible enough to keep it from fracturing due to too much rebound. To help archers find the right arrow spine for their equipment setup, archery manufacturers use a standardized spine testing method.
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Using a Spine Testing Method
To choose the right spine, first use a testing method. Start by considering the weight of the arrow and the draw weight of your bow. As a general rule, arrows with a lower draw weight will require arrows with a higher amount of spine, while bows with a higher draw weight will need arrows with less spine. As a result, the weight of the arrow will be an important factor in choosing the right spine.
Checking the Draw Weight & Arrow Length
Next, measure the draw weight and arrow length. For example, if you are shooting a 48-pound draw weight longbow with 28-inch arrows, you can begin looking for the recommended arrow spine for that type of bow. In this case, the spine should be at least 500. If you draw more than 48 pounds, then you’ll need a higher spine rating, up to 750. Also, note that longer arrows will require a higher spine rating.
Consider the Arrow Point & Geometry
The arrow point and geometry will also affect how the arrow flies. Choosing an arrow point with the right length and shape will help to ensure accuracy and avoid wobble or “porpoising”. When selecting the arrow point, consider its weight and length, as well as the angle of the beveled edge or groove, as this can affect the spine rating as well. For example, a longer arrow point with a shallower bevel will require a higher spine rating than a shorter arrow point with a deeper bevel.
By using the above considerations when selecting the appropriate arrow spine for your equipment setup, you can help to ensure optimal accuracy and performance from your bows and arrows. Before shooting any arrows, always double-check that you’re using the right spine and make any adjustments if necessary. This will help you to get the best performance out of your arrows and help to keep you safe.
In conclusion, choosing the right arrow spine is an important step in archery and a vital part of getting the best performance from your bows and arrows. To choose the right spine, start by considering the weight of the arrow, the draw weight and arrow length of your bow, and the weight and angle of the arrow point. Also, always double-check that you’re using the right spine before shooting and make any adjustments if necessary. Taking the time to properly choose the best arrow spine for your equipment setup will help to ensure optimal accuracy and performance from your arrows.
Arrow Selection How to Select the Right Spine for You | Pick the correct arrow spine
Lots of people waste money on arrows when they pick the incorrect spine for their needs, I will help make sure that never happens to you. A couple SIMPLE things get over looked and after you watch this video, you wont make the same mistake that many many others have made when picking new arrows out.
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Last update 2021-01-05. Price and product availability may change.