Quick Answer
An arrow rest affects arrow spine choices by altering the relationship between the arrow and the bow, which affects the arrow's stability, accuracy, and overall flight.
Choosing the Right Arrow Rest for Your Arrow Spine
When selecting an arrow rest, consider the type of arrow spine you’re using. A lighter arrow rest generally works better with arrows that have a more rigid spine (1-3" deflection at 28 inches), as it allows for less disturbance of the arrow’s flight path. However, if you’re using a more flexible arrow with a higher spine (4-6" deflection), you may need a heavier rest to maintain stability.
Arrow Rest Weight and Arrow Spine Correlation
As a general rule, arrow rests weighing less than 1 ounce (28 grams) work well with arrow spines of 1-3" deflection. For higher spine arrows (4-6" deflection), use a rest weighing between 1-2 ounces (28-57 grams). This heavier rest helps counter the increased flexing of the arrow during flight, reducing deflection and improving accuracy.
Rest Positioning and Arrow Spine Considerations
Rest positioning also plays a crucial role in arrow spine selection. For a more upright rest position (higher above the bow’s riser), a lighter arrow rest may be suitable for most arrow spines. However, if your rest is positioned more horizontally (lower above the riser), you may need a heavier rest to compensate for the increased arrow flexing and maintain stability.
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