ARCHERY HELP - PEEP SIGHT ALIGNMENT
TRAINING YOUR FLETCHER-STYLE PEEP SIGHT
If your bow is equipped with a Fletcher-Style peep sight, congratulations. The Fletcher-Style peep has several advantages. It's a small lightweight peep that promotes optimal arrow velocity, and the Fletcher-style peep sight does not use a noisy rubber tube. It is the preferred peep sight of serious archery enthusiasts around the world.
However, since the Fletcher-Style peep has no tubing or secondary device to keep it aligned at full draw, the peep sight must often be "trained" to remain in its proper position. Our pro-shop has set your peep sight during assembly, and we have made adjustments as necessary during testing and tuning. Nonetheless, it is likely your peep sight will need additional adjustments as your string finishes its break-in period and completely settles into the eccentric grooves.
WHY DOES THIS HAPPEN?
If you examine the string on your bow, you will notice that the individual fibers of the string are arranged in a twisting or spiral pattern. Twist construction gives the string some needed elasticity and increases the balance and stability of the string.
As a general rule, factory strings are twisted clockwise during construction. So as the new string breaks-in during the bow's first 200 shots, the strings tend to slightly "unwind" counterclockwise. Since the Fletcher-Style peep is installed between the string fibers, any amount of "unwinding" will result in a few degrees of peep drift. This makes the peep difficult or impossible to see-through at full draw. Most peep sights will drift slightly to the left as the string breaks-in. So our pro-shop normally installs peep sights with a few degrees of bias to the right to compensate for future peep drift.
DIFFICULTY ANTICIPATING PEEP DRIFT:
Our pro-shop makes every effort to anticipate peep drift and setup your peep in the best possible position. Unfortunately, strings tend to have varying characteristics from maker to maker and bow to bow, so no single setup method can ensure correct peep alignment at the end of the break-in period. The amount (degrees of rotation) of actual peep drift varies, depending on the construction method and materials used by the string manufacturer. Final peep drift may vary from a few degrees to 90° or more.
WHEN IT'S CORRECTLY ALIGNED:
When the peep is aligned properly at full draw, the center groove of the peep will be vertical (perpendicular to the ground) and you are able to see a clear sight-line to the target.
CORRECTING PEEP DRIFT:
If and when your peep sight decides to misbehave, you will need to "train" the peep back into proper position. The process is simple and requires no tools or specialized equipment. In most cases, a little patience and persistence is all that is needed.
While peep sight rotation can be corrected by adding or subtracting twists in the bow string, this procedure requires a bowpress and is largely unnecessary. Using the following techniques, you can correct errant peep alignment with just your fingers.
METHOD #1: USING THE STRING LOOP AS AN ALIGNMENT DEVICE
- The overwhelming majority of our Ready-to-Hunt Compound Bow Packages are setup with a string loop (D-Loop). Since the string loop is adjustable, it can serve as an excellent peep alignment device. If your bow is equipped with a string loop, correcting peep alignment is a snap!
- Most string loops are installed on the string so that the loop points back toward the shooter when the bow is at rest. The string loop can, however, be turned so that its static position is pointing to the left or right. Of course, the string loop is still equally effective and functional if it is turned several degrees left or right on the string. As long as the loop is easily accessible to grasp with your release caliper, the exact orientation of the loop isn't critical. It is this flexibility that allows the string loop to serve as an alignment device for your peep sight.
- By changing the static orientation of the string loop, you can change your peep sight alignment at full draw. For example, if your peep sight has drifted slightly to the left, you can twist the knots of your string loop to the left so that the loop is pointing slightly to the left. When you pull on the loop with your release, the loop will return to center, which causes the string (and peep) to rotate slightly to the right too. This will bring your peep back into proper alignment as you come to full draw.
- To adjust your string loop, simply hold the actual bow string in one hand, and twist the individual knots of the string loop with the other. Remember to turn the loop IN THE DIRECTION that the peep has drifted. You may need to repeat this procedure a few times during the string's break-in period.
METHOD #2: TRAINING STRING FIBERS TO "REMEMBER" PROPER ALIGNMENT
- Modern string fibers like Vectran and Dyneema retain memory (like a map that has been rolled up). You can utilize this characteristic to your advantage when correcting peep drift.
- If your peep has drifted a few degrees left, for example, simply use your fingers to twist the peep back to the right. Its sounds simple but it works.
- Before you shoot, give the peep sight a firm 90°-180° twist to the right. Let it go. Then draw and shoot. Repeat this procedure for each shot.
- As you continue to correct the peep's static rotation in the string, the string fibers will begin to "remember" this new position and the peep sight will soon stay put in correct alignment.
STRING & PEEP STABILIZATION
Once you have completed the break-in period (200+ shots), your peep alignment is likely to remain fixed throughout the life of your string set. So peep training is only a temporary chore. However, when your string set is due for service/replacement (1-2 years), you'll have to begin and complete the training process again.
Try to avoid drawing your bow with just your fingers. Always use your mechanical release. When a bow is drawn with fingers, the center of the string can "roll" along the length of the fingers. This can add or subtract twist in the center section of the string, unbalancing your string (especially with single cam bows). This can adversely affect your peep alignment. So don't "undo" your peep training work by drawing the bow with your fingers.