MINOURA WORKMAN PRO Manual 

WORKMAN PRO Instruction Manual Thnak you for your purchasing Minoura “Workman Pro” truing stand. This Workman Pro is a wheel truing stand for stan- dard bicycle with unique Auto-Centering system that allows you to do almost every procedure such as building or adjusting your bicycle wheel without any tool such as a wheel centering gauge basically. The frame is foldable for your easy storage and trans- portation. Please read this instruction manual carefully before use and we hope you grow up your skills of the bi- cycle wheel. • Important Notes A wheel truing stand is a utensil to measure the bal- ance of the wheel. Do not use Workman Pro as a display stand or an indoor bicycle trainer. This Workman Pro has a special method, auto-cen- tering system, so you can finish building or checking a wheel with only this truing stand basically. But we suggest you to use a wheel centering gauge for your complete wheel adjustment. • Components ARMS Both right and left arms are connected so they will move together at the same time. When you open or close the arms, you should hold both arms with your both hands. The arms have hollow on its top to hold the wheel hub shaft. When you install a wheel on the Workman Pro, fol- low these processes. At first, open the arms enough to install the wheel hub shaft, and push down the wheel into the hollow of the arms, then fix the quick release lever or tighten the hub nut slightly. GAUGE FOR VERTICAL SHAKING The gauge plate for vertical shaking is located in the center of the U-shaped gauge frame, and it has two purposes. One is to measure the vertical shaking of the wheel, and another one is to help adjustment for wheel cen- tering process. When you want measure the vertical shaking of the wheel, put the U-shaped gauge frame close to the rim. And put the gauge plate close to the rim surface with rotating the knob bolts. The knob bolt has 0.1mm level scales in its own surface. Do NOT touch the tip of the gauge plate to the rim, otherwise your later pro- cedure may be difficult. Side Shaking Gauge Vertical Shaking Gauge Knob U-shaped Gauge Frame Vertical Shaking Gauge Plate Gauge Stay

the gauge plate and the rim surface carefully. Sometimes the gauge plate will touch to the rim, and sometimes the gauge plate will be away from the rim. This is the vertical shaking. Please fix this vertical shaking with “ HOW TO FIX VERTICAL SHAKING” step in the following page. Y ou do not have to worry about 3mm or less vertical shaking, it may not cause any troubles. When you want to adjust the rim centering, see the scale on the gauge plate and the rim position. If the rim is in the center of the scale, the wheel is right po- sitioned. But when the rim is too right or too left, the wheel is not correct. Wrong rim position may cause some troubles, for example one side braking or spoil- ing running stability, so you should fix the centering of the wheel. Y ou do not have to worry about 2mm or less differ- ence of the centering position, it may not cause any troubles. GAUGE FOR SIDE SHAKING The gauges for side shaking are located on the both side of the U-shaped gauge frame, they are the knob bolts. They have 0.1mm level scale on their own surfaces. After you set the wheel on the Workman Pro, put the U-shaped frame close to the rim. And tighten the knob bolts to approach to the rim surface. Do NOT touch the tip to the rim, otherwise your later procedure may be difficult. Rotate the wheel slowly, and see the clearance between the tip of the knob bolts and the rim surface. Sometimes will touch to the rim and sometimes will be away from the rim. This is the side shaking. Please fix this side shaking with “HOW TO FIX SIDE SHAKING” step in the following page. You do not have to worry about 2mm or less side shak- ing, it may not cause any troubles. • How To Open The Workman Pro is received in its own box folded down. When you use it, please open the frame with the following steps. 1. Loosen the knob bolt which is located on the foot of the arm. And open the gauge stay a little. Then open the U-shaped gauge frame at right angles. 2. Then you can open the leg stay fully until it stops to the end, and place the Workman Pro on the table. In this time, you should make your attention that you do not pinch your finger to the frame and the stay. 3. Finally, open the gauge stay, and tighten the knob bolt to fix the gauge stay position. • How To Close To prevent some accidents, you should fold the Work- man Pro when you store it. 1. Hold both arms with your both hands, and push to- ward inside at the end. 2. Loosen the knob bolt which fixes the gauge stay, and fold the gauge stay half way. Hold the U-shaped gauge frame at right angles. (Folded Workman Pro)

you do not pinch your finger in the frame or the stay. 4. Finally, raise up the U-shaped gauge frame until it is parallel to the gauge stay. And tighten the knob bolt again to fix the gauge stay. • About Offset Wheel Setting At first, you should understand that you should fix the vertical shaking prior to the side shaking, especially on the rear wheel because of its unique wheel system “offset”. can keep your wheel stable in the future. Left side spoke tension is just a help. Also you should understand that the nipple is not al- lowed to be loosened, you can tighten the nipple only because the nipple is made of soft material such as light alloy or brass. The thread of the nipple and the spoke is not so stronger than you think. And you must use a special spoke wrench which fits the nipples perfectly if you use light alloy nipples on your wheel. If you use wrong one, the nipple will be round easily and you cannot continue your work any more. • How To Fix Vertical Shaking The vertical shaking within 3mm may not cause any troubles. But if you want to be it zero, you can try again and again with the following process. It is similar to the process as side shaking. In this case, you should tighten both side of the nipples equally. 1. You can see a gauge plate on the U-shaped gauge frame. Put the tips of the plate close to the surface of the rim. Rotate the wheel slowly, and check the vertical shak- ing. And stick vinyl tapes to two spokes; one is in the beginning and one is in the ending of vertical shak- ing. 2. Make three groups of these spokes between the vinyl tapes as below; Group-A : Three or less spokes in the beginning and in the ending of vertical shaking. Group-B : Three or less spokes between Group-A except for the center one. Group-C : The center one between the vinyl tapes. In the front wheel, it is very easy that you can tension all spokes equally with ignoring the direction of right and left. However in the rear wheel, you have to se- lect another process; offset tensioning. You can notice that the rear wheel has different spoke angle pattern with looking at the wheel from behind. Rear hub is not symmetrical to the wheel, left side flange is far from the wheel centerline, and right side flange is deep in the wheel. Because rear hub must have extra space where the transmission gear will be located. But you have to assemble rear wheel sym- metrically in this strange situation for its stable bal- ance. It is offset. In offset wheel, the torque works only to the right side spokes. Because right side spokes should be as- sembled more vertically than left side. So you should understand that right side spoke ten- sion is more important than left side spoke’s one in this offset assembling. Well adjusted right side spokes Offset Wheel

The side shaking within 2mm may not cause any troubles. But if you want to be it zero, you can try again and again with the following process. 1. You can see two knob bolts on both side of the U- shaped gauge frame. Put the tips of them close to the surface of the rim. Do not touch the rim. 3. If the rim shakes to downward, tighten both side nipples. And if the rim shakes upward, tighten both far side nipples. Do not loosen the nipples. Because the nipples are made by soft material, brass or light alloy, so its thread can be broken easily by loosening. 4. Tighten Group-A nipples about 1/8 turns, Group-B about 1/4 turns, and Group-C about 1/2 turns. And then check the vertical shaking with rotating the wheel slowly again. If the wheel shakes yet, continue the process again. When you hear strange sound from the nipples or see some kind of strings while you tighten the nipples, the thread of the nipples will be broken soon. But do not apply any oils to the nipples to remove the sound, and try to exchange the nipple to the new one as soon as possible. Rotate the wheel slowly, and check the side shaking. And stick vinyl tapes to two spokes; one is the begin- ning amd one is in the ending of the side shaking. 2. Make three groups of these spokes between the vinyl tales as below; Group-A : Three or less spokes in the beginning and in the ending of side shaking. Group-B : Three or less spokes between Group- A except for the center one. Group-C : The center one between the vinyl tapes. 3. If the rim shakes to the right, tighten the left side spokes. Do not loosen the right side spokes. Because the nipples are made by soft material, brass or light alloy, so its thread can be broken easily by loosening. 4. Tighten Group-A nipples about 1/8 turns, Group-B about 1/4 turns, and Group-C about 1/2 turns. And then check the side shaking with rotating the wheel slowly again. If the wheel shakes yet, continue the process again. When you hear strange sound from the nipples or see some kind of strings while you tighten the spokes, the thread of the nipples will be broken soon. But do not apply any oils to the nipples to remove the sound, and try to exchange the nipple to the new one as soon as possible. MINOURA JAPAN HEAD OFFICE 1197-1 Godo, Anpachi, Gifu 503-2305 Phone (+81) 584-27-3131 / Fax (+81) 584-27-7505 Email : [email protected] / www.minoura.jp MINOURA NORTH AMERICAN CENTER (For North American Residents Only) 1996 East Avenue, Hayward, CA 94541-5454 U.S.A. Phone 1-510-538-8599 / Fax 1-510-538-5899 Email : [email protected]