X Technology Technical Bulletin INTRODUCTION April 2006 Precision Shooting Equipment, Inc. Tucson, Arizona As the owner of a new X Technology bow, you have purchased the finest, most dependable bow available. It is manufactured with the finest materials and components in the world by skilled craftsmen with years of experience. With proper care and maintenance your bow will provide many years of dependable service. The X Technology bow is drastically different than other bows and requires special procedures to perform service and maintenance. Read the procedures outlined in this Technical Bulletin and follow them carefully. SAFETY As with any weapon, safe operation of your Mach X bow must always be the highest priority. Do not attempt to use your bow without proper instruction. Doing so can result in serious injury. 1. Always wear safety glasses when using your bow. 2. Never dry fire your bow. Dry fire is to draw and release the bowstring without an arrow in the bow. 3. Always be sure of your intended target as well as what lies behind the target. An arrow can travel a considerable distance so it is important to have a safe backstop in place. 4. If you draw your bow and need to let it down, do so in a slow and careful manner. Keep your support arm straight and be prepared for a rapid and violent let-down. Be careful not to let your hand hit any of the protruding accessories such as the quiver or cable guard. Keep your head and face back and out of danger and keep the arrow pointed at the ground during the let-down. Always use a wrist strap when drawing a bow. Never draw a bow with a peak weight above your comfort level. 5. Never modify any part of the bow or its components by drilling extra holes or removing material. This not only creates a safety issue but also voids the warranty. 6. Never expose your bow to extreme heat. Excessive heat can damage your bow so it is important not to leave it in the truck or inside a closed vehicle even on cloudy days. 7. Carefully examine your bow before each use. Check all components for damage or excessive wear, especially the string and cables. If you suspect a problem, see your local PSE dealer. 8. Check your arrows for defects. Never shoot a damaged arrow. 9. NEVER USE A BOW PRESS WITH CONVENTIONAL ROLLERS to service your X Technology bow. See instructions elsewhere in this bulletin. 1 FEATURES The X Technology bows come with many unique features that will enhance your archery experience. Multi Position Sight Mounting The Mach X bow is equipped with a multi-position sightmounting feature allowing the sight to be mounted to optimize your sight window. Mount the sight in the middle position and sight in the bow. Your pin grouping should be centered on the sight body. If the pins are too high, move the sight to the upper mounting position. If they are too low move the sight to the lower position. Sight in the bow again. Independently Adjustable Pivoting Pocket System The X Technology bows are equipped with an innovative limb pocket system. Do not make any adjustment to this system without referring to the instructions in this manual. Start with the sight mounted in the middle set of holes. Limb Pocket Underlay Alignment Pins Half Round Figure 1 2 MAINTENANCE Your bow is a mechanical device that is subject to wear and therefore must be inspected periodically and given the proper adjustments and service. It is recommended that this service be performed at least once a year by an authorized PSE dealer. All components, including string, cable, axles, e-clips, limbs and riser should be carefully inspected for damage or wear. USING A BOW PRESS Use only a PSE approved bow press to service an X Technology bow. Never allow your bow to be placed in a bow press with conventional rollers. Check our website (www.psearchery.com) for a current list of approved bow presses. STRINGS AND CABLES Place roller close to the end of the limbs. Apply a light coat of high quality bowstring wax to your string and cable once every two weeks under normal shooting conditions. It is especially important to wax the area of the string that wraps around the idler wheel since this portion of the string is not served. This will help reduce wear on your string and cable. Use a good quality wax from your authorized dealer. Inspect the string and cables regularly and replace them when there is evidence of wear. LUBRICATION POINTS PSE Approved Bow Press When removing the limbs for service always make sure that the area between the half rounds and the limb pockets are lubricated with medium-weight grease. Also lubricate the surfaces in the pocket areas where the limbs make contact with the riser with the same grease. A typical bow press will damage X Technology bows. DO NOT USE! ADJUSTING LIMB BOLTS Before making any adjustments to the limb bolts the 4 side locking tab screws and the 4 limb bolt locking screws must be loosened (see Figure 2). Limb bolt adjustments must be made in increments of no more than one-turn each. There should never be a differential of more than 2 turns at any time between limb bolts. After limb bolt adjustments are complete tighten the 4 locking tab screws and the 4 limb bolt locking screws. 3 NO BOW PRESS OPTION The X Technology bows do not require a bow press to relax the strings for service. Relax Strings for Service 1. Loosen and remove the 4 locking tab screws (see Figure 2). Damage may occur to the limbs at the pin holes if the locking tab screws are not removed before fully backing out the limb bolts. 2. Loosen the 4 limb bolt locking screws. 3. Back limb bolts out one turn at a time alternating between all 4 limb bolts. Never have more than 2 turns differential between the limb bolts at any time. Back the limb bolts out until they are flush with the anchor (see Figure 2). Tighten Strings after Service 1. Check to make sure the all the half rounds and underlays are installed and properly seated between the limbs. Note: It is important that the underlay is seated properly over the pin on the half round and the pin on the pocket. (see Figure 1). 2. Begin tightening the limb bolts one turn at a time alternating between all 4 limb bolts. Never allow more than two turns differential between limb bolts at any time. 3. Once the limbs have bottomed, the wheel attitude can be adjusted, if needed. (see the Setting Wheel Attitude section for this procedure) and then set the poundage. 4. Reinstall the 4 side locking tab screws and tighten the limb bolt locking screws. NEVER ADJUST OR REMOVE THIS SCREW! Limb Bolt Locking Screw Back limbs out until they are flush with bottom of anchor. Locking Tab Screw Limb Bolt Figure 2 SETTING WHEEL ATTITUDE The Mach X bow is equipped with independently adjustable pivoting limb pockets. This allows for the adjustment of wheel attitude. The wheel attitude is pre-set at the factory and will remain true as long as adjustments to the limb bolts are made in the same increment for each limb bolt. For example, if you would like to decrease the draw weight of the bow by 3 to 4 pounds, back each limb bolt out exactly one turn. Adjust Wheel Attitude 1. Adjust top wheel by using the split harness. When looking at the bow from the back (as if shooting), the right side of the split harness should have approximately 12 twists more than the left. It is not necessary to use the limb bolts to adjust the Cable should be If cable is on the left, attitude of the top wheel. centered on cam tracks. back out the right or tighten the left limb bolt 2. Draw the bow to full draw and observe the cable in the bottom wheel. It should be centered between the two tracks of the wheel (see Figure 3). 3. Let the bow down carefully from full draw. NOTE: Do not use an arrow! 4 If the cable is on the right, back out the left or tighten the right limb bolt. Figure 3 4. If the string is not near center between the two cam tracks at full draw, adjust the limb bolts (with the bow at rest) on the bottom limbs to get the wheel to sit so that the cable is as centered as possible between the two tracks at full draw. See Figure 3 for details. Never have more than two turns differential between the limb bolts. WHEEL SPACING Spacing for the top wheel should be one medium spacer on both sides of the wheel. If there is any extra play in the assembly then 1 or 2 thin spacers can be added to the OUTSIDE of the limb inside the E-clip. Spacing for the bottom cam should be one thin spacer on the shelf side of the cam and one thin spacers on the opposite side. If there is any extra play in the assembly add an additional thin spacer to the side opposite the shelf. WARNING: DO NOT SHOOT ABOVE BOW'S LISTED PEAK WEIGHT The limbs have been optimized to perform their best at peak weight. Even though your bow may be capable of being adjusted to higher weights, DO NOT DRAW OR SHOOT any PSE bow higher than peak weight. Drawing or shooting the bow above peak weight could cause serious injury as well as void the warranty. Draw Stop Screw w/ washer (shown in # 11 module, 80% position) Module Screws Module Dot "." Posts Figure 4 Draw Stop Minus "-" Post Orientation Reference Mark Plus "+" Post X CAM Adjusting Draw Length in Small Increments The X Cam can be adjusted in small increments by changing the string to different post positions. To change post positions the bow must be either placed in an approved bow press or the strings must be relaxed by backing out the limb bolts (see instructions on page 4 of this bulletin). The string is set on the dot "." post from the factory. If you want to DECREASE the draw length by ½", move the string to the minus "-" post (see above photo). If you want to INCREASE the draw by ½", move the string to the plus "+" post. If the string is installed on the plus "+" post and the minus "-" post, the draw will be shortened by ¼" from the factory setting. 5 Adjusting Draw Length in 1-inch Increments For draw length changes in 1-inch increments the module must be changed. To change the module the bow must be placed in an approved bow press or the strings must be relaxed by following the instructions in this bulletin. Remove the axle from the limbs and remove the cam. Once the cam is free, remove the 3 socket head cap screws (see Figure 4) that hold the module in place. Remove the draw stop and place in the slot that correlates with the new module size. Put the new module in place aligning the large and small pins and reinstall the 3 screws. Reassemble the bow and tighten the strings according to the directions in this bulletin. Let-off Adjustment: The X Cam has provisions for infinitely adjusting let-off between 65% and 80% (see figure 4). Set the let-off by loosening the draw stop and sliding it in the slot. The extreme ends of the slot are labeled (see Figure 4). The draw stop must be in the slot corresponding to the module number. The module number is located on the backside of the module. For example if you are using a number 9 module, the draw stop must be in the number 9 slot. Cam Orientation: A reference mark is found on the cam to indicate an approximate orientation (see Figure 5). This line is for reference only and is meant to give approximate orientation only. The orientation of the cam can be moved slightly by twisting or untwisting the cable or string. Changing post attachments will change the orientation of the cam. If attaching the string to the "+" or the "-" post, the orientation mark will not be aligned with the cable. Orientation Reference Mark Tuning: Figure 5 The X Cam has been rigorously designed to deliver speed and accuracy. Thorough lab testing and field evaluations determined that optimal grouping was achieved with a slightly high paper tear. The nock-travel profile of every X module has been engineered around this specific design criterion. While paper tuning results are not the same for every archer, the paper tear delivering the best accuracy was found to be a slight high tear as shown in Figure 6 below. NOTE: Installed accessories, grip pressure and release style can all cause variations in paper tuning. Figure 6 6 Mach X 7 ...