LOKE Archer's Class: Don't Let "Stiffness" Ruin Your Aim! How to Pick the Right Arrow Spine

1. What is Arrow Spine? (Think of it as the Arrow's "Flex")

Simply put, Spine is a measurement of an arrow's stiffness. The moment you release the string, the massive force causes the arrow shaft to flex instantly (this is known as the "Archer’s Paradox").

• Spine is Too Stiff (Low Number): The arrow acts like an iron rod; it won't flex enough to clear the bow, usually hitting to the left (for right-handed shooters).

• Spine is Too Weak (High Number): The arrow wobbles like a "noodle" in the air. This causes inconsistent flight and, in extreme cases, poses a risk of the shaft snapping.

2. Static Spine vs. Dynamic Spine (Don't Get Lost in the Numbers)

The numbers you see printed on LOKE arrow shafts (like 340, 400, or 500) represent the Static Spine.

• Higher Number = Weaker Arrow: A 500 spine is more flexible than a 400 spine.

• Dynamic Spine is the Reality: Your draw weight, draw length, and even the weight of your tip will change how the arrow actually behaves when shot.

3. The LOKE 3-Step Selection Guide

When choosing arrows from the LOKE collection, check these three critical specs of your bow setup:

Step 1: Check Your Draw Weight

The heavier the pull, the more "push" the arrow receives. You will need a stiffer arrow (a lower spine number) to handle that power.

Step 2: Check Your Arrow Length

Think of a lever—the longer the shaft, the easier it is to bend. If you use extra-long arrows, you may need to go one step stiffer.

Step 3: Consider Your Point Weight

If you prefer a heavy broadhead (e.g., jumping from 100gr to 125gr), the added weight at the front will make the arrow act weaker.

4. Pro Advice from LOKE: "Better Stiff Than Weak"

• When in Doubt, Go Stiffer: If you are caught between two spine sizes (e.g., 400 vs. 500), LOKE experts suggest choosing the stiffer option. A slightly stiff arrow is easier to tune by adjusting point weight, whereas an overly weak arrow is a safety hazard.

• The Paper Test: Theory is a great start, but the best way to confirm your choice is through "Paper Tuning."

5. Video Tutorial: Watch the Flight Path

Want to see how an incorrectly spined arrow actually flies? Click the video below to see a side-by-side comparison filmed by the LOKE team:

[Watch Now: LOKE Tutorial - How to Choose the Perfect Spine for Your Bow]  

"At LOKE, we want every archer to find the arrow that truly understands their bow. What is your current draw weight and length? Leave a comment below, and our LOKE experts will help you find your perfect spine!"