Minoura TWIN SCHEMATICS

Bolt Type Left Side Coupling

Fits 120 – 145 mm standard hub
width. For quick release type hub

only. For xed nut hub, replace

to the optional "Longer Left Side
Coupling Bolt" (SKU:400-1285-00).

indoor bicycle trainer

instructions manual

Applicable Tire Size Capacity

　　•

　　•

U-Leg Hole for Smaller Wheel

Use this hole for all 24", 26", and
650c wheels to keep the bike
horizontal.

Without Z-adaptor 26 x 1.50
With Z-adaptor 22 x 1-3/8

MAGTEQS TWIN

(version 1.1E 2010/10)

700 x 40c

〜

26 x 1.25

〜

Quick Release Hub Clamp

Mounts/dismounts your bike in
seconds.

Tandem Magnet Type Unit

A world's rst. Primary magnet is
engaged for the rst 7 levels then

the second magnet kicks in for
the next 6 levels.
Gives you the widest range of
resistance of any trainer.

Foot Pedal

Engage, release and adjust
tire contact in one action.
Remembers location so if
you use the same bike, no
new set up is needed.

Lighter Flywheel = More Power

Our patented ywheel weighs less for

greater portability but performs as well as

a ywheel weighing 35% more. The key

is the inside stair-step design for perfect
power transmission when you need it.

Micro-Adjustable Legs

By turning the dial, the
legs can be adjusted +/­10 mm to accommodate
uneven surfaces for
complete trainer stability.

Tubular U-shape Leg

Not just for unique design, but
reduces weight and provides
great stability.

Made in Japan

For More Information

If you need help, please contact the shop where you originally purchased this

product or the distributor in your country rst. The distributors list can be found
on our web site. If you don't get enough assistance, you can contact us;

MINOURA U.S.A. MINOURA JAPAN

(for U.S. residents ONLY) (for ALL customers)

1996 East Ave. Hayward, California 94541 U.S.A. 1197-1 Godo, Anpachi, Gifu 503-2305 Japan
Phone: [phone] Phone: [phone]
Fax: [phone] Fax: [phone]
Email: [e-mail] Email: [e-mail]
Web: www. minoura.jp

How To Assemble U-Leg

Required Tools: 2x 5mm Hex Wrench (supplied)

1

for 700C

for 22"~26"

650C

Choose the pivot hole for your bike size on the

main pillar. Some 26" may t better in the upper

hole.

2

Pivot Bolt
(Screw Side)

Pivot Bolt
(Nut Side)

(Fig. A)

5

(Fig. E)

Attach the U-Leg to the main pillar.

6

(Fig. F)

First, disassemble the pivot bolt.

3

Remove the alloy sleeve and plastic washers.

4

Plastic Washer

Alloy Sleeve

(Fig. B)

(Fig. C)

Plastic Washer

Check that the plastic End Plugs on the U-Leg are
inserted completely and aligned with the hole.
Then insert the pivot bolt and tighten down the screw
using the supplied M5 hex wrenches.

!

Be sure you fully insert the plastic

End Plugs to the U-Leg before
putting the pivot bolt through them.

Failure to do so will cause a

problem that the legs will not align
in same height.

7

The center bolt is
left intentionally
loose in the
package. Lightly
tighten it.
Check to make
sure each leg
moves smoothly.

Tighten
rmly

Tighten

light

End Plug

Pivot Bolt

U-Leg

(Fig. D)

Insert the alloy sleeve into the selected hole,
and put the plastic washers on both sides.

- 2 -

The center bolt is left intentionally

!

loose in the package. Lightly
tighten it. Check to make sure
each leg moves smoothly.

(Fig. G)

How To Install Mag Unit & Foot Step

Required Tools: 1x 5mm Hex Wrench (supplied)

Mag Resistance Unit

1x 10mm Spanner

(not supplied)

The Mag resistance unit and Foot Step now need to be
installed to the frame.

Attach the Foot Step onto the bracket on the Step-Bar rst,

put the Mag unit over the Foot Step, then tighten both
brackets together with the pivot bolt (see Fig. H).

!

Overtightening the pivot bolt will cause the
Foot-Step to become inoperable.
Make sure you unscrew (loosen) the pivot
bolt by 1/4 - 1/2 turn once you completely
tightened it.
The Mag unit should be lowered towards the
ground slowly by its own weight at this point.
If the pivot bolt is too loose, the Mag unit
will drop quickly and you may be pinched
between the frame and Mag unit.

Adjust the tightening torque for the best

operation.

Pivot Bolt

Step-Bar

(Fig. H)

Foot Step

Rear Tire

If the tire touches the plastic housing, it will damage them
both. Adjust the mag unit position horizontally to avoid this
problem.
To set the tire as close to center as possible, loosen the back
side screws and slide the mag unit sideways. Then re-tighten

both screws rmly.

How To Use Small Wheel Adaptor

Required Tools: 1x 5mm Hex Wrench (supplied)
1x 10mm Spanner

If your tires size is

smaller than 26 x 1.50"

will need to install the supplied Z-shaped Small Wheel
Adapter between the Mag unit and the base plate.
(The tire size is clearly indicated on its side wall.)

The direction of the Z-adapter is xed so follow the

arrow printed on the top and make sure it's pointing
toward the front (toward the direction your bike goes
forward).
If the drive roller cannot reach the tire, make sure the
Z-adapter has been installed correctly.

(not supplied)

, you

Z-Adaptor

Hex Head Bolt

Round Head
Bolt

(Fig. I)

10mm Spanner

Use the original cap head bolts for the Mount Base, and
use the supplied hex head bolts for the Mag unit. (Fig. J)

- 3 -

(Fig. J)

Placing the Trainer on the Floor

Fully open the legs and place on a at and horizontal oor.

!

To open the U-Leg, grab the main frame and the rubber cap on the U-Leg.
Do NOT pull the Alloy Leg Guide directly, otherwise it may be bent or damaged.

(Fig. K)

Check that all 4 points are touching the oor

evenly (see Fig. M).

Main Frame

Alloy Leg Guide

U-Leg

(Fig. L)

Adjuster Knob

If all 4 points are not touching the oor evenly,

the frame could be deformed and cause damage
to the trainer and possibly your bike.

About Leg Height Adjuster

Each U-Leg height can be adjusted separately in
+/- 10 mm travel by turning the Adjuster Knob on top
of each Alloy Guide (see Fig. M & N).

This adjuster allows for uneven oor or ground

compensation to help insure proper stability.

When using the adjuster, be sure to check and make
sure that all 4 points are touching the ground evenly.

(Fig. M)

And the trainer should be positioned as close as

possible to the oor for better stability.

- 4 -

(Fig. N)

How To Mount Your Bike

TWIN's coupling position is pre-adjusted in the factory to t the 125mm standard rear hub width.

If it is too loose or too tight to your bike, or if you use different width of rear hub like a track race bike,
adjust the left side coupling as precisely as possible for maximum stability.
Please note there is no adjustment on the right side (lever side) coupling.

Standard Left Coupling Hole Size: Diameter 17mm / Depth 14mm

!

!

1

2

3

The coupling cone shape is designed to t the supplied quick release skewer perfectly.
We strongly recommend you to replace your rear wheel skewer to the supplied one.
We do NOT guarantee the stability while using TWIN with your own skewer.

If your bike's rear hub axle is NOT a quick release skewer type, but a hub nut type,
you don't need to use the supplied skewer and replace the left side coupling bolt to the
optional one; "Left Side Coupling Bolt for Fixed Hub Nut".

The following steps describe the micro adjustment of the left side coupling. This step is not always

required and once xed in the proper position, you should not need to adjust again. Once adjusted
to t your bike, simply operate the Quick Hub Handle Lever for a proper t every time.

First, loosen the red Lock Ring by
turning it counter-clockwise. (Fig. O)

The left side coupling is actually a bolt/
coupling combination. Turn the coupling to
adjust the position. (Fig. P)

Raise the Quick Hub Clamp Lever up to
retract the right side coupling. (Fig. P)

Lock Ring

Left Side Coupling

Right Side Coupling

Quick Hub
Clamp Lever

(Fig. O)

Insert the left side hub end (quick release

4

lever side) into the left side coupling cone.
(Fig. Q)

In this position, place the other side of

5

the bike into the right side (rear cog side)
coupling cone. Make sure your derailleur
cable goes OVER the coupling.

Now, push down (lower) the Quick Hub

6

Clamp Lever until it fully engages the
skewer or axle nut. (Fig. R)

Make sure the Quick Clamp Hub Lever

7

is lowered into its locked position and
cannot be lowered any further.
The frame may appear slightly open but
this is normal.
If the frame seems to be opened too
widely, re-mount your bike following
the instructions. Failure to do so could
damage your bike and/or the trainer.

(Fig. P)

Quick Release Skewer

(The wheel is not shown here)

(Fig. Q)

(Fig. R)

Now, grab the saddle of your bike and rock the bike back and forth to make sure your bike is securely in

8

the trainer. Your bike should not move independently of the trainer where it is attached.

Tighten the red Lock Ring rmly to x the left side coupling position. (Fig. R)

9

- 5 -

How To Use Foot Pedal

The Foot Pedal is a convenient device to engage/release the drive roller to/from the rear tire quickly, and
it keeps the proper pressure of the drive roller to the tire without adjusting everytime you use the TWIN.
To maintain the tire life as long as possible, you should adjust correctly, especially in the beginning.

<Pedal Operation> To engage the roller: Push down the pedal
To release the roller: Pull up the pedal

Foot Pedal

(Fig. S)

Adjust Knob

!

While we call this a "Foot Pedal", we do not recommend you use your foot to operate it.
For accurate adjustment, please use your hand.

(Fig. S)

(Fig. T)

(Fig. T)

How To Maintain Proper Roller Pressure

Inate the rear tire to maintain the air pressure

1

properly. Too less air pressure should cause
premature tire wear.

Lift up the Mag unit towards the rear tire until the

2

clearance between the tire and roller is about 2 mm.

While keeping this position, turn the red adjust knob

3

under the Foot Pedal clockwise until the inside bolt
touches the black steel base plate (see Fig. U).

At this point, stop tightening the knob and gently but rmly

4

push down the Pedal to engage the tire to the roller.
It is normal that the tire is compressed by 3-4 mm.
Adjust the knob if the contact is not too much nor too little.

Now, hop on your bike and give it a spin. If your tire slips, tighten the knob in 1/4 - 1/2 turns more.

5

If the tire drags or you smell burning rubber, back off contact until you achieve proper contact.

!

If the roller pressure to the tire is not adjusted properly, premature tire wear can be
expected. Too little pressure is worse than too much pressure for good tire life.

(Fig. U)

If always using the same bike and tire, no further adjustment should be needed than operating the pedal.

6

- 6 -

How To Operate Remote Shifter

TWIN comes with a convenient remote shifter device.
By installing it on your handlebar or stem, you can adjust the resistance
level in 13 levels without getting off the bike.

The plastic band is soft enough to t aero-shaped carbon handlebar or

round shaped stem as well as the standard round dimension handlebars.

How to install the remote shifter

1) Wind the plastic band around the handlebar

2) Hook the tip to the gutter on the plastic shifter base (Fig. V-1)

3) Flip up the lever to lock (Fig. V-2)

How to increase the resistance level

Twist the shifter dial toward "H" symbol

How to reduce the resistance level

Twist the shifter dial toward "L" symbol

!

"L" is not zero resistance. There is still some resistance
at "L" level due to the roller compression to the tire.

The remote shifter is pre-adjusted to t the standard handlebar size;

22mm (7/8") diameter.
If it becomes loose or too tight, or you need to install the shifter onto
an oversized handlebar or stem, adjust the band length by turning the
plastic screw with an M4 hex wrench (see Fig. Y).

2

1

(Fig. V)

(Fig. W)

Decrease

Indicator
(white dot)

!

Do not overtighten the plastic screw. It will break the
plastic band. Release the hook before adjusting.

How To Adjust Remote Cable

If you cannot shift at L or H position, it's time to adjust the cable tension.

1) Set the remote shifter lever at "H" position and straighten the cable.

2) Pull off the black plastic cap on foot of the cable, then the adjusting
screw will appear. (Fig. Z)

3) While pushing the outer cable toward the shifter, push the adjusting
screw to the outer cable. (Fig. Z & AA)

4) Turn the lock nut until it touches the Mag unit. You shouldn't overtighten

the nut, otherwise you won't be able to set the shifter at "L" position.

5) Insert the plastic cap again.

Adjusting Screw

(Fig. X)

Increase

You must release the hook
for adjusting screw

(Fig. Y)

Cap

Lock Nut

(Fig. Z)

- 7 -

(Fig. AA)

Tighten nut until it touchs housing

TWIN Schematics

UF-9

UF-8

GM-9

TM-1

GM-7

UF-1

UF-13

UF-10

UF-12

UF-11

UF-15

UF-6

UF-7

UF-10

UF-14

UF-5

UF-2

UF-4

UF-3

GM-10

GM-11

GM-12

GM-13

GM-14

TM-2

GM-15

TM-3

TM-5

TM-4

TM-6

GM-1

!

CAUTION

Do NOT touch TM-6 "Alloy Rotor"

GM-8

during and 15 minutes after workout.
It's VERY HOT and may burn you.

UF-1 : Main Frame GM-1 : V270 / TWIN Flywheel

UF-2 : U-Leg (Chrome Plated) GM-7 : Drive Roller Holder
UF-3 : Alloy Leg Guide GM-8 : Flywheel Nut Cap
UF-4 : Height Adjuster Cap GM-9 : Axle End Cap
UF-5 : Height Adjuster Knob GM-10 : Mag Unit Fitting Bracket
UF-6 : Right Side Coupling & Clamp Lever (Red) GM-11 : Rubber Shim
UF-7 : Clamp Lever Guide GM-12 : Mount Base
UF-8 : Left Side Coupling GM-13 : Rubber Washer Set
UF-9 : Coupling Lock Ring (Red) GM-14 : Foot Pedal
UF-10 : U-Leg Bushing GM-15 : Foot Pedal Adjust Knob Set

UF-11 : U-Leg Pivot Sleeve TM-1 : TWIN Remote Shifter
UF-12 : Alloy Leg Support Bracket Cover TM-2 : TWIN Drive Roller
UF-13 : Ruber Cap TM-3 : TWIN Housing Cover
UF-14 : Pivot Bolt Set (Long) TM-4 : TWIN Main Housing
UF-15 : Pivot Bolt Set (Short) TM-5 : TWIN Alloy Sleeve
TM-6 : TWIN Alloy Rotor