Minoura E-RDA-1050R User Manual

E-RDA-PM “PowerMatic”

indoor bicycle trainer instructions manual

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SCHEMATIC

ER-3

Screw-M

F-8

SR-12

R8-1

SR-13

F-4

F-9

F-2

F-4

F-1

F-7

ER-7

ER-8

ER-23

Screw-L

ER-1

ER-24

ER-16

ER-17

Screw w/ washer

ER-18

ER-19

ER-10

SR-12

M8-3

M8-4

M8-4

ER-12SR-5

SR-14

SR-8

ER-14

ER-13

ER-20

F-1 : Coupling (Right) ER-1 : Upper Case
F-2 : Coupling (Left) ER-3 : Top Cover (blue)
F-4 : Coupling Cover (move side) ER-7 : Flywheel, Alloy Rotor & Axle
F-7 : Hub Handle (3/8” thread) ER-8 : Magnet
F-8 : Wheel Position Adjust Knob ER-10 : Main Arm
F-9 : Hub Nut Protector (Grommet) ER-12 : Pulley Arm
R8-1 : RDA-850 Main Frame ER-13 : Assistant Pulley Holder
M8-3: Rubber Frame Cap (38.1mm) ER-14 : Tension Lever
M8-4: Rubber Foot Cap (31.8mm) ER-15 : Remote Bracket & Cable
SR-5 : V-Belt (K-16) ER-16 : Plate Guide
SR-8 : Assistant Roller Pulley ER-17 : Cam Plate
SR-12 : Cap Bolt (M6x12) ER-18 : Spring
SR-13 : Reinforcement Plate ER-19 : Governor
SR-14 : Drive Roller Pulley (PowerMatic) ER-20 : Spring Holder

ER-23 : Lower Case (PowerMatic)
ER-24 : Sub Arm (PowerMatic)

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IMPORTANT NOTES

• Read all instructions carefully before use.• Read all instructions carefully before use.

• Read all instructions carefully before use.

• Read all instructions carefully before use.• Read all instructions carefully before use.

• Some assembly required.• Some assembly required.

• Some assembly required.

• Some assembly required.• Some assembly required.

• Keep the manual handy at all times.• Keep the manual handy at all times.

• Keep the manual handy at all times.

• Keep the manual handy at all times.• Keep the manual handy at all times.

• Do NOT use trainer for any other purpose than instructed.• Do NOT use trainer for any other purpose than instructed.

• Do NOT use trainer for any other purpose than instructed.

• Do NOT use trainer for any other purpose than instructed.• Do NOT use trainer for any other purpose than instructed.

• The trainer is manufactured to precise standards. Disassembly may void your warranty.• The trainer is manufactured to precise standards. Disassembly may void your warranty.

• The trainer is manufactured to precise standards. Disassembly may void your warranty.

• The trainer is manufactured to precise standards. Disassembly may void your warranty.• The trainer is manufactured to precise standards. Disassembly may void your warranty.

• "Magturbo" and “RDA” are the trademarks of Minoura Co.,Ltd. and may not be copied.• "Magturbo" and “RDA” are the trademarks of Minoura Co.,Ltd. and may not be copied.

• "Magturbo" and “RDA” are the trademarks of Minoura Co.,Ltd. and may not be copied.

• "Magturbo" and “RDA” are the trademarks of Minoura Co.,Ltd. and may not be copied.• "Magturbo" and “RDA” are the trademarks of Minoura Co.,Ltd. and may not be copied.

WARNINGS

Use two-wheeled bicycles only. Tandems may be used if balanced correctly.Use two-wheeled bicycles only. Tandems may be used if balanced correctly.

Use two-wheeled bicycles only. Tandems may be used if balanced correctly.

Use two-wheeled bicycles only. Tandems may be used if balanced correctly.Use two-wheeled bicycles only. Tandems may be used if balanced correctly.

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You may use the quick release skewer currently on your bicycle, however we recommend replacingYou may use the quick release skewer currently on your bicycle, however we recommend replacing

You may use the quick release skewer currently on your bicycle, however we recommend replacing

You may use the quick release skewer currently on your bicycle, however we recommend replacingYou may use the quick release skewer currently on your bicycle, however we recommend replacing

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your quick release skewer with the one supplied and install the coupling protector cap on to theyour quick release skewer with the one supplied and install the coupling protector cap on to the

your quick release skewer with the one supplied and install the coupling protector cap on to the

your quick release skewer with the one supplied and install the coupling protector cap on to theyour quick release skewer with the one supplied and install the coupling protector cap on to the
right side coupling of the trainer. Otherwise the stability will not be guaranteed.right side coupling of the trainer. Otherwise the stability will not be guaranteed.

right side coupling of the trainer. Otherwise the stability will not be guaranteed.

right side coupling of the trainer. Otherwise the stability will not be guaranteed.right side coupling of the trainer. Otherwise the stability will not be guaranteed.

Remove the coupling protector cap when you use your own quick release skewer.Remove the coupling protector cap when you use your own quick release skewer.

Remove the coupling protector cap when you use your own quick release skewer.

Remove the coupling protector cap when you use your own quick release skewer.Remove the coupling protector cap when you use your own quick release skewer.

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Remove all oils and moisture from the drive roller and the tire before use.Remove all oils and moisture from the drive roller and the tire before use.

Remove all oils and moisture from the drive roller and the tire before use.

Remove all oils and moisture from the drive roller and the tire before use.Remove all oils and moisture from the drive roller and the tire before use.

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Keep both hands on handlebars at all times and maintain a normal riding position.Keep both hands on handlebars at all times and maintain a normal riding position.

Keep both hands on handlebars at all times and maintain a normal riding position.

Keep both hands on handlebars at all times and maintain a normal riding position.Keep both hands on handlebars at all times and maintain a normal riding position.

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Check the couplings supporting the rear hub for damage and cracks.Check the couplings supporting the rear hub for damage and cracks.

Check the couplings supporting the rear hub for damage and cracks.

Check the couplings supporting the rear hub for damage and cracks.Check the couplings supporting the rear hub for damage and cracks.

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Accidents may occur from cracked or damaged couplings. (Fig. A)Accidents may occur from cracked or damaged couplings. (Fig. A)

Accidents may occur from cracked or damaged couplings. (Fig. A)

Accidents may occur from cracked or damaged couplings. (Fig. A)Accidents may occur from cracked or damaged couplings. (Fig. A)

You should not tighten the wheel axle by tightening the left side knob.You should not tighten the wheel axle by tightening the left side knob.

You should not tighten the wheel axle by tightening the left side knob.

You should not tighten the wheel axle by tightening the left side knob.You should not tighten the wheel axle by tightening the left side knob.

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This is for pre-adjusting the wheel position to the exactly center of theThis is for pre-adjusting the wheel position to the exactly center of the

This is for pre-adjusting the wheel position to the exactly center of the

This is for pre-adjusting the wheel position to the exactly center of theThis is for pre-adjusting the wheel position to the exactly center of the
drive roller only. Securley tightening your bike to the trainer should bedrive roller only. Securley tightening your bike to the trainer should be

drive roller only. Securley tightening your bike to the trainer should be

drive roller only. Securley tightening your bike to the trainer should bedrive roller only. Securley tightening your bike to the trainer should be
done with the right side hub handle only.done with the right side hub handle only.

done with the right side hub handle only.

done with the right side hub handle only.done with the right side hub handle only.

When using the trainer, place it on a flat surface for safe training.When using the trainer, place it on a flat surface for safe training.

When using the trainer, place it on a flat surface for safe training.

When using the trainer, place it on a flat surface for safe training.When using the trainer, place it on a flat surface for safe training.

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Do not over tighten the hub-clamp handles. Over-tightening may cause damage to the trainer orDo not over tighten the hub-clamp handles. Over-tightening may cause damage to the trainer or

Do not over tighten the hub-clamp handles. Over-tightening may cause damage to the trainer or

Do not over tighten the hub-clamp handles. Over-tightening may cause damage to the trainer orDo not over tighten the hub-clamp handles. Over-tightening may cause damage to the trainer or

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bicycle frame. The clamp handles should be a snug and secure fit. Do not force!bicycle frame. The clamp handles should be a snug and secure fit. Do not force!

bicycle frame. The clamp handles should be a snug and secure fit. Do not force!

bicycle frame. The clamp handles should be a snug and secure fit. Do not force!bicycle frame. The clamp handles should be a snug and secure fit. Do not force!

Before use, make sure all bolts and nuts are securely fastened.Before use, make sure all bolts and nuts are securely fastened.

Before use, make sure all bolts and nuts are securely fastened.

Before use, make sure all bolts and nuts are securely fastened.Before use, make sure all bolts and nuts are securely fastened.

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(Fig. A)

Keep away from small children, and keep hands and feet away from spinning rollers and wheels atKeep away from small children, and keep hands and feet away from spinning rollers and wheels at

Keep away from small children, and keep hands and feet away from spinning rollers and wheels at

Keep away from small children, and keep hands and feet away from spinning rollers and wheels atKeep away from small children, and keep hands and feet away from spinning rollers and wheels at

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all times.all times.

all times.

all times.all times.

Open the legs fully to get maximum stability.Open the legs fully to get maximum stability.

Open the legs fully to get maximum stability.

Open the legs fully to get maximum stability.Open the legs fully to get maximum stability.

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Wipe away all oil and moisture from your rims to keep optimal braking performance.Wipe away all oil and moisture from your rims to keep optimal braking performance.

Wipe away all oil and moisture from your rims to keep optimal braking performance.

Wipe away all oil and moisture from your rims to keep optimal braking performance.Wipe away all oil and moisture from your rims to keep optimal braking performance.

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Place a rubber or other mat under your training area to keep from leaving sweat or bike stains on yourPlace a rubber or other mat under your training area to keep from leaving sweat or bike stains on your

Place a rubber or other mat under your training area to keep from leaving sweat or bike stains on your

Place a rubber or other mat under your training area to keep from leaving sweat or bike stains on yourPlace a rubber or other mat under your training area to keep from leaving sweat or bike stains on your

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floor.floor.

floor.

floor.floor.

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HOW TO SETUP YOUR E-RDA-PM TRAINER

<Required Tools: M5 hex wrench>

1

2

Open the frame support legs and fit the rubber feet at the correct angle so the base is in full contact with
the floor.

NOTE: If the both legs don’t touch the floor at same time and if one side of the leg is still slightly raised, pull up the
leg upward strongly then place the trainer on the floor again.

Install the Mag resistance unit on the left side slot and
the assistant roller on the right side slot beside the trainer
pilar using the supplied M6x12 bolts. (see Fig. B)

NOTE: We recommend you use the reinforcement plate (SR-

13) for installing the Mag unit. This plate will sandwich the
slot plate from outside for mounting the Mag unit giving it
extra stability.

(Fig. B)

3

Open both couplings by turning the left side knob (see Fig. C) and the right side hub handle
(see Fig. D) anti-clockwise.
Do not over-loosen the couplings, otherwise the knob or the hub handle may become unthreaded
inside the frame.

Left Side Knob

(Fig. C)

NOTE:NOTE:

NOTE: We suggest not using the left side coupling for major adjustment.

NOTE:NOTE:
Moving it too much to one side will cause misalignment. The left side cou­pling is used only to provide easy intitial adjustment for your hub length.
(see Fig. E)

Right Side Hub Handle

(Fig. D)

(Fig. E)

4

Insert the left side of the skewer (Q/R lever side) into the left side cou­pling, and adjust the rotation of the coupling so the skewer lever sits
securely in the large cut-out (see Fig. F). This will prevent damage to the
skewer during use.

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(Fig. F)

5

Hold the bike firmly by hand and turn the right side hub handle clockwise until the coupling comes into
contact with the right side skewer nut.

6

7

Adjust each height of the Mag unit and the assistant
roller to fit to your rear wheel perfectly and tighten the
bolts firmly. (see Fig. G)

Each rubber roller is made to contact the rim ONLY.Each rubber roller is made to contact the rim ONLY.

Each rubber roller is made to contact the rim ONLY.

Each rubber roller is made to contact the rim ONLY.Each rubber roller is made to contact the rim ONLY.

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Contact with the tire may cause the tire to burstContact with the tire may cause the tire to burst

Contact with the tire may cause the tire to burst

Contact with the tire may cause the tire to burstContact with the tire may cause the tire to burst
during use.during use.

during use.

during use.during use.

Adjust the wheel position by checking the double-circle
position indicators on both sides.
The best position should be each indicator can be seen
equally, but if your rim is narrow, you should adjust
the wheel position to be a little left (toward Mag side)
to prevent unexpected slippage problem.

NOTE:NOTE:

NOTE: Note that the left side knob is NOT for tightening

NOTE:NOTE:
the axle. It is only for positioning the wheel. Clamping
wheel securely must be done by the right side hub handle.

(Fig. G)

(Fig. H)

USING THE PLATIC SKEWER NUT PROTECTOR

We recommend that you use the supplied skewer if at all possible. This
will guarantee a fit with our couplings and remove any chance of mis­alignment.

Hole

(Fig. I)

The right side coupling has a black plastic skewer nut protector (called a “Grommet”). This is to protect your
skewer from damage during use, however, should you choose to use your own skewer, you should use the
supplied Grommet to insure a better fit.
5If your skewer nut design doesn’t fit to the Grommet, you can remove it by inserting a rod or a pen to the hole
(see Fig. I) and then lifting up the Grommet.

NOTE: We will NOT guarantee any fitting problem or accident caused by using your own skewer on theNOTE: We will NOT guarantee any fitting problem or accident caused by using your own skewer on the

NOTE: We will NOT guarantee any fitting problem or accident caused by using your own skewer on the

NOTE: We will NOT guarantee any fitting problem or accident caused by using your own skewer on theNOTE: We will NOT guarantee any fitting problem or accident caused by using your own skewer on the
trainer.trainer.

trainer.

trainer.trainer.

When you use the supplied skewer, you should keep the Grommet on the coupling.

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HOW TO INSTALL THE REMOTE LEVER

You can install the remote lever on anywhere the diameter is between 22.2mm (7/8”) and 31.8mm (1-1/4”) like
as on the handlebar.

1

2

Fully loosen the knob bolt on the plastic holder until it stops then push down the bolt to open the holder.
(see Fig. J)

Place the holder onto the handlebar, shut the holder, and pull up the bolt then tighten it. (see Fig. K)

Shim

(Fig. J) (Fig. K)

Depending on the diameter of your handlebar, you must adjust

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(Fig. L)

the shim as follows;

• 22.2mm (7/8”) - 25.4mm (1”): Install both shims.

• 28.6mm (1-1/8”): Install either right or left side shim.

• 31.8mm (1-1/4”): Remove both shims.

When you install the shim
on the plastic holder, make
sure the direction of the
shim as shown in Fig. L.

USING THE MAG RESISTANCE UNIT

The Mag unit has 7 different levels of load force for replicating actual riding resistance. You can set your pre­ferred maximum resistance point between high (H) and low (L) by adjusting the lever on the thumb shifter type
remote lever device (see Fig. M). The resistance level will automatically be controlled from zero to maximum
depending on your riding speed.

You may also adjust the load force by shifting up or down among your gears,
depending on the level desired.
We recommend that you start with a medium to low load force and gradually
work up, increasing force as your muscles warm up.

(Fig. M)

About the Maximum Resistance LevelAbout the Maximum Resistance Level

About the Maximum Resistance Level

About the Maximum Resistance LevelAbout the Maximum Resistance Level

Please Note:Please Note:

Please Note: The remote lever of the PowerMatic sets the highest resistance level of the Mag unit, not the

Please Note:Please Note:

overall resistance like other trainers.
The resistance will always start from zero even you set the remote lever at any position. It will be increased when
you start pedalling gradually and progressively. You can see it as the motion of the side indicator on the Mag unit
(see Fig. N).

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When it reaches the maximum level you have set, the resistance
will be limited at this level, except constant increase to your speed.

To make any adjustment to the unit, make sure you areTo make any adjustment to the unit, make sure you are

To make any adjustment to the unit, make sure you are

To make any adjustment to the unit, make sure you areTo make any adjustment to the unit, make sure you are

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off the bike, and that the trainer has come to a com-off the bike, and that the trainer has come to a com-

off the bike, and that the trainer has come to a com-

off the bike, and that the trainer has come to a com-off the bike, and that the trainer has come to a com­plete stop and that nothing is still moving.plete stop and that nothing is still moving.

plete stop and that nothing is still moving.

plete stop and that nothing is still moving.plete stop and that nothing is still moving.

TROUBLE SHOOTING YOUR REMOTE SHIFTER UNIT

(Fig. N)

If you cannot shift to either the lowest (L) or the highest (H) position, it is possible
that the inner wire of the remote shifter cable is too long and the wire tension is
loose. If so, please adjust the tension with the following steps.

1

Set the remote shifter lever at “H” position. Remove the remote shifter
device from the handlebar and straighten the cable.

2

3

Remove the plastic cap located on the bottom of the cable. (see Fig. O)

Hold the adjusting screw with your right hand and push it towards the

Adjusting Screw

Inner Cable

Nut

Outer Cable

Cap

(Fig. O)

direction of the outer cable, then adjust the nut with your left hand to make
the wire tension properly.

If you experience that the remote lever will move toward “H” unexpectedly automarically when you pedal hard,
try to tighten the adjusting screw 1/4 rotation. The screw is located under the remote lever holder.

ABOUT SLIPPAGE PROBLEM

The pateneted roller system used in the rim drive models from Minoura is made to fit a wide variety of bicycles
and wheels. Therefore, you should expect that sometimes the rollers will slip a little on your rims. This is com­pletely normal and due to the spring mechanism that provides a secure fit with such a large variety of bicycles
and wheels.

If you experience slippage all the time you use the trainer, check the belt tension first by pushing down the belt
with your finger. The V-belt will be worn down after long term use but most reason for the slippage problem is
caused by improper (too much or too less) tension adjustment.

To adjust the belt tension, loosen both upper and lower bolts which hold the pulley arm using an M5 hex wrench,
then pull the arm outward by your hand and tighten the bolts firmly again.
At this time, we recommend you to check the belt tension indicator (as three different length lines) on both upper
and lower arm sit in the same position to avoid any future trouble.

If the V-belt is completely worn down or damaged, replace it. The instructions manual comes with the V-belt.
But ihis work requires skill when disassembling and reassembling the mag unit. If you are unsure, please ask
your Miinoura dealer to assist you in this process.

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HOW TO USE THE GOVERNOR

Your resistance unit has already been adjusted precisely in our factory.
Adjusting the Governor is an option and not always necessary.
Your initial position is indicated by a triangle decal. The combination of
the orange tip of the decal and the small triangle indicator on the Governor
is your initial setting (see Fig. P).

If you want to adjust the starting speed of the resistance and change it to be
higher or lower to suit your workout, you can do so by pushing down the
Governor ring and rotating, then releasing the ring.

(Fig. P)

If you increase the inside spring tension by turning the Governor to the direction of clockwise, the starting speed
will become higher.
If you loosen the spring tension by turning the Governor to the direction of counter-clockwise, the startting speed
will become lower.

CAUTION ON YOUR FLOOR PROTECTION

If you train on a carpeted surface, consider using a rubber mat or a mat of other non-marking material to eliminate
the possibility of marking the carpet by the trainer, bike, or bodily fluids. Minoura cannot be held responsible for
any stain incurred while using a Minoura product.

FOR MORE INFORMATION

Minoura warrants this trainer to be free of defects in workmanship and materials for two years from the
date of purchase. This warranty is valid for the original owner only and does not apply to trainers
purchased used or trainers purchased NEW or USED through any auction site.

A copy of the original sales receipt may be required for warranty service. Please see your local shop for
details or contact Minoura directly.

MINOURA JAPAN HEAD OFFICEMINOURA JAPAN HEAD OFFICE

MINOURA JAPAN HEAD OFFICE

MINOURA JAPAN HEAD OFFICEMINOURA JAPAN HEAD OFFICE

1197-1 Godo, Anpachi, Gifu 503-2305 JAPAN
Fax [phone] / E-mail: [e-mail]
http://www.minoura.jp

MINOURA NORTH AMERICAN WARRANTY CENTER (MINOURA NORTH AMERICAN WARRANTY CENTER (

MINOURA NORTH AMERICAN WARRANTY CENTER (

MINOURA NORTH AMERICAN WARRANTY CENTER (MINOURA NORTH AMERICAN WARRANTY CENTER (

In Canada, have your local shop contact Norco Products for warranty and parts service.In Canada, have your local shop contact Norco Products for warranty and parts service.

In Canada, have your local shop contact Norco Products for warranty and parts service.

In Canada, have your local shop contact Norco Products for warranty and parts service.In Canada, have your local shop contact Norco Products for warranty and parts service.

1996 East Avenue, Hayward, CA 94541-5454 U.S.A.
Fax [phone] / E-mail : [e-mail]

Proudly made to exacting standards in Japan.

Copyright © 2004-2005 Minoura Co., Ltd., All Rights Reserved.

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For U.S. Residents only)For U.S. Residents only)

For U.S. Residents only)

For U.S. Residents only)For U.S. Residents only)