MINOURA WORKMAN PRO Manuel utilisateur

Wheel Truing Stand

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 uniqueAuto-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

Rotatethewheelslowlyandseetheclearancebetween

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 SHAKI Gstepinthefollowingpage.

You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.

Youdonothavetoworryabout2mmorlessdiffer-

ence of the centering position, it may not cause any

troubles.

GAUGE FOR SI E 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

SHAKI G” 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.

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.

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.

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.

Hold both arms with your both hands, and push to-

ward inside at the end.

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)

Then you can fold the Workman Pro. Make sure that

you do not pinch your finger in the frame or the stay.

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.

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.

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

• How To Fix Side Shaking

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.

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.

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.

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.

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.

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.

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 HEA 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 orth American Residents Only)

1996 East Avenue, Hayward, CA 94541-5454 U.S.A.

Phone 1-510-538-8599 / Fax 1-510-538-5899

Email : MinouraUSA@ATTglobal.net

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