Minoura WHEEL ASSEMBLY KIT User Manual
The Complete Kit
for Wheel Assembling and T ruing
“WHEEL ASSEMBLY KIT”
Instruction Manual
MADE IN JAPAN
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CONTENTS
ASSEMBLING BICYCLE WHEELS
CAUTION
REQUIRED TOOLS AND PARTS
• ABOUT COMPONENTS
RIM
SPOKE
NIPPLE
HUB
• BEFORE YOUR WORK
• HOW TO ASSEMBLE WHEELS
CHECK THE RIM
CHECK THE HUB
INSERT TO THE HUB
FIRST SETTING
SECOND SETTING
COMPLETE SECOND SETTING
SWIRL SPOKES
THIRD SETTING
FINAL SETTING
... 3
... 3
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... 4
... 5
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... 6
... 6
... 6
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... 7
... 7
... 7
... 7
... 8
... 8
WHEEL TRUING STAND
(Workman Pro)
• PURPOSE
• COMPONENTS
ARMS
GAUGE FOR VERTICAL SHAKING
GAUGE FOR SIDE SHAKING
• HOW TO OPEN
• HOW TO FOLD
RIM CENTERING GAUGE
(FCG-300)
• PURPOSE
• HOW TO OPEN
... 12
... 12
... 13
... 13
... 13
... 14
... 14
... 14
• TENSIONING SPOKES
ABOUT SPECIAL TENSIONING OF
THE REAR WHEEL
TENSION RIGHT SIDE SPOKES
• HOW TO FIX SIDE SHAKING
• HOW TO FIX VERTICAL SHAKING
... 9
... 9
... 10
... 11
• HOW TO CLOSE
• HOW TO USE
SPOKE WRENCH (NW-100)
• PURPOSE
• HOW TO USE
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... 15
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ASSEMBLING BICYCLE WHEELS
Thank you for purchasing Minoura “WHEEL ASSEMBLY KIT”.
This kit includes three kinds of tools that you will need
when you build or adjust your bicycle’s wheels; a wheel
truing stand, a wheel centering gauge and a spoke
wrench.
With the process to build a new bicycle wheel by yourself, you can save money rather than buying the complete wheel at a shop. Because you don’t need to pay
extra charge for anyone to build it in his factory. You
also can increase your bicycle repair skills and change
your bicycle much better than ever before.
Please read this instructions carefully before use, and
get a knowledge about bicycle wheels. We hope you
will get good skills with our “WHEEL ASSEMBLY
KIT”.
IMPORTANT NOTE
The following instructions are just a sample way
we took. So you need to understand that you
should use another approach when you build a
different wheel.
In this instructions, we picked up a rear wheel
with 36-spoke for MTB.
We don’t explain in this instructions about the front
wheel and composite wheel.
Also you should understand that carbon or alloy
made composite wheels cannot be repaired or
trued.
The following items will help your work;
• Nipple driver or small flat screwdriver
• Spoke tension meter
• Plastic hammer
• Small bowl or box for nipples
• Lubricant
ABOUT COMPONENTS
§ RIM
In this instructions, we use a light alloy rim with 36
holes. Please check the following points.
DIAMETER
Check the diameter of the rim.
Rim should be correct fit for your tire. You cannot use
the wrong one.
There are some common rim sizes for bicycles in the
market, for example 26, 27-inch and 700C. If you already have tires, you should make sure of the diameter
of your tires before going to the shop.
SPOKE HOLES
Check the number of the spoke holes on the
rims.
We usually use a rim for bicycles which has 36 spoke
holes. However some choose another rim which has 32
or less holes, for example for the front wheel of road
bikes.
And check the rim has eyelets which will reinforce the
spoke holes.
§ REQUIRED TOOLS AND PARTS
You have to prepare the following tools and parts before your work;
• Rim
• Spokes
• Hub
• Nipples
• Quick Release Skewer
• Vibyl Tape
• Rags
• Acetone
VALVE STEM HOLE
Check the size of the valve stem hole.
You should look for the valve hole on the rim surface.
Both American and English style valves require a lar ger
valve stem hole, but French style valve needs a narrow
hole.
SECTIONAL SHAPE
Check the sectional shape of the rim to fit for
your tire.
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Most road bikes usually use tubeless tires which are fixed
by rubber glue, so it requires flat sectional shape.
However most MTB usually require the rim with ordinary tube which has shoulders inside to hold the tire
bead.
Wrong sized rim, too narrow or too wide, can cause the
tire to come off or be punctured easily. So you should
ask to your local shop about the combination of the rim
and the tire, and choose the correct size.
MATERIAL
Check the material of the rims.
There are many kinds of material for the rims in the
market; light alloy, stainless steel, chrome plated steel
or carbon. They have their own benefits, but they also
have their own problems.
If you will use the wheel only for race, you can choose
a light weight one. But if you will use the wheel everyday, you should take strength rather than weight.
In this instructions, we choose a light alloy rim, because
it is light weight enough and durable and has a reasonable price.
DISTORTION
Check the distortion of the rim.
At first, place the rim on a flat table, and next, push
down the edge with your fingers. If the other side has
raised up more than 5mm, the rim is bad. You should
exchange it for a better one. It is the most important
thing when you buy a rim at a shop. Because it is difficult to fix the distortion of the rim will keep its own
shape.
§SPOKE
In this instructions, we use 36 pieces of 14-gauge nonbutted 265mm stainless steel spokes. Please check the
following things.
MATERIAL
Check the material of the spokes.
There are various kinds of materials for spokes in the
market; stainless steel, chrome plated steel or titanium.
They have their own benefits, and also they have their
own problems.
Titanium spokes are very light weight, but they can be
broken easily by sudden force. Chrome plated steel
spokes are cheap, but they will rust easily.
You should choose the material with your own purpose.
W e use stainless steel spokes because it is cheaper than
titanium, and its has enough strength.
SHAPE
Check the shape of the spokes.
There are two kinds of its style; straight and swaged.
W e usually use swaged spokes. However some choose
straight spokes with a special hub for the front wheel
of road bikes.
There are other kind of shapes; butted and non-butted.
Butted spokes have flat shafts on its center part for
aerodynamics. But you should understand that butted
spokes are weaker than non-butted spokes.
SIZE
Check the length and diameter of the spokes.
Mostly there are two different diameters of the spokes;
14-gauge (2.0mm) and 15-gauge (1.8mm).
W e usually use 15-gauge spokes for bicycles. Although
some heavy weight riders should choose 14-gauge
spokes.
All spokes must be the correct size for the nipples, it is
the most important thing.
And there are many length of the spokes available.
Length is decided by two factors; radial or tangential
wheel style, and front or rear. Rear wheel requires a
special style to construct, it is “offset”.
W e can see the different spoke angles on the rear wheel
between right side and left side. Right side (rear cog
side) spokes are more near by hub center than the left
side. Because rear wheel must have 8 to 10 transmission gears on its right side, so the spokes must walk
away to the center.
W e recommend the best spoke length combination for
best fitting, right side spokes should be 1mm shorter
and left side spokes should be 1mm longer. You may
ask to your local shop what the length of the spokes
that you need.
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THREAD
Check the threads on the spoke’s tip.
The thread of the spokes must be as same as the nipples.
You should screw all nipples through the spokes before your work, and check the condition of the threads.
In some cases, you should wipe off lube or grease on
the thread with rags. Lubricant sometimes will cause
some troubles to the spokes and the nipples during your
ride; loosening each other.
§NIPPLE
§ HUB
In this instructions, we use light alloy 36-hole rear hub.
Please check the following points.
HOLES
Check the number of the spoke holes on the
hub.
The number of the spoke holes should be the same as
on the rim. If you choose wrong one, you must buy the
right one.
W e use 36 brass nipples which fit for 14-gauge spokes.
Please check the folowing points.
SIZE
Check the thread of the nipples.
The nipples must fit for the thread of the spokes.
At first, you should screw all nipples through the
spokes, and check the fittings.
Y ou should make your attention especially on 15-gauge
spokes. They can put through the 14-gauge nipples
easily, but it is bad combination (15-gauge spoke and
14-gauge nipple) that the threads will be broken at a
moment.
Do not use different sized spoke wrench to the nipples.
If you use it, you will not be able to continue your
work as you will round the nipples.
Do not select too short sized nipples. Because the
spoke wrench must reach the nipples.
MATERIAL
Check the material of the nipples.
There are two kind of materials in nipples in the market; brass and light alloy.
You should select brass nipples because light alloy
nipples are light weight and colorful but weak. If you
don’t have special spoke wrench for the alloy nipples,
you will round them easily, and you will not be able to
continue your work.
SHAPE
Check the shape of the hub flange.
W e can see the direction of the holes on the hub flange.
W e usually choose the hub which direction of the spoke
holes are as same as the hub shaft. However in some
cases, for the front wheel of road bike, someone can
select the special hub which have radial direction holes
to install the straight spokes.
Also you should check the shape of the spoke holes,
too.
If it has no hollow to sink the spoke head, the spokes
may be cut by the edge.
And you need to check the thickness of the hub flange.
If the hub has too thick flange, you cannot set plain
spokes to it.
MATERIAL
Check the material of the hub.
There are various kind of materials for the hubs in the
market. Chrome plated steel hubs are cheaper than light
alloy, but they can rust easily.
SHAPE OF THE HUB SHAFT
Check the shape of the hub shaft.
The hub shaft have three types; for normal quick release skewer, 20mm diameter through axle for downhill bikes or for plain hub nut.
If you choose the hub for quick release system, please
make sure that your quick release skewer will fit the
hub shaft.
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