Minoura RDA INTERRIM ERGO User Manual

MINOURA RDA Inter-Rim Ergo-10 / 50 Instruction manual

Please read this instructions carefully before use

(This figure is the Remote Control version)

Thank you for purchasing Minoura's Inter-Rim Ergo Trainer with RDA and Magturbo.
With its unique rim-drive system, the RDA Inter-Rim Magturbo is our most sophisticated bicycle home
trainer for both road and mountain bikes. Minoura has long been an innovator in stationary trainers, and
our new Inter-Rim trainer continues that tradition. The Rim Drive Action (RDA) system has special drive
pulleys that contact only the rim, avoiding wear and tear to the tire and any unpleasant noise. With the
RDA system, training is smoother, more adjustable, and quieter, and you avoid the cost of replacing worn­down tires. The RDA system can handle almost any bicycle with a wheel diameter of 26 to 28 inches and
is the best trainer yet for mountain bikes.

• Read all instructions carefully before use.

• Some assembly required.

• Keep the manual handy at all times. Lost instruction materials can be replaced through
Minoura or your local dealer.

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

• The trainer is manufactured to precise standards. You may not disassemble or re­build it.

• "Inter-Rim" and "RDA" are trademarks of Minoura and may not be copied.

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Please obey warning signs.

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ASSEMBLING YOUR MINOURA TRAINER

Couplings

Mag Unit Height
Adjust Knob

Hub-clamp handle

Mag Unit

Remote Control
Lever

Mag unit installation
slot

Open the frame and U-Leg and place on level floor.

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Assistant roller unit
installation slot

Drive roller

Frame

U-Leg

Drive-pulley lever

(Fig. A)

Rubber Foot Cap

Prior to assembly of the Magturbo unit, locate the

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two bolts and two washers. Locate the left-side slot
on the Minoura trainer. While placing the Magturbo
unit at the desired position on the inside of the slot,
attach it with bolts and washers by using the included
hex wrench. (see Fig. B)

After installing the Magturbo unit, put the Height
Adjust Knob (maybe an option) through the hole on
the pre-installed bracket on the left side slot, and then
tighten it to the thread on the Magturbo support base.
This optional Height Adjust Knob will help your
adjustment of Magturbo’s height in order to fit the
rubber roller properly to the rim side wall. (see Fig.C)

(Fig. B)

(Fig. C)

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Mag unit must be assembled on the left side

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of RDA Trainer and the Assistant Roller Unit
on the right. Do not mistake directions, see
diagram for accurate placement. After
deciding the height of the pulleys tighten
handle securely to avoid damage to equip­ment and/or rider. (see Fig. D)

Handle with care! Damage may occur if Mag unit is dropped.

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Install the assistant roller unit to the right side of the frame, using

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the same process as with the left-side Mag unit. Make sure the
assembly is secure and accurate. (see Fig. E)

The Inter-Rim is foldable and portable without requiring future
disassembly of the Magturbo unit and assistant roller unit.

The Magturbo unit must be on the left side of the Inter-Rim Ergo's

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frame, and the assistant roller unit must be on the right side.
Both drive pulleys must be adjusted so as not to touch the tire.
You do not need to set this adjustment at this stage of the assem­bly --- you can adjust it later, before use. Once you have set the
height of the pulleys, you must fix them firmly. If they are loose,
they may break and/or damage your bicycle.

(Fig. D)

(Fig. E)

INSTALLING YOUR BICYCLE

Before installing your bicycle, rotate both hub-clamp handles counter-clockwise to

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create a wide clearance between the couplings. (see Fig. F)

Place the bicycle's rear hub between the two couplings,

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making sure that the quick-release skewer (or hub nut) is not
yet touching either couplings. Then rotate the hub-clamp
handles clockwise to fix the rear hub. Tighten until securely
fastened, but do not overtighten.
During this attachment process, you should adjust the
position of the rim with checking the Rim Center Position
Indicator on the Assitant Roller. (see Fig. G)

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(Fig. F)

(Fig. G)

Once you have set the correct position of the rim for your bicycle, you can install or
remove your bicycle by rotating only one hub-clamp handle. This feature saves
time.

The Left-side coupling has a cut-away section to accomodate the shaft of the quick-

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release lever. You must align this coupling with the shaft of the QR. Failure to do
so may cause the coupling to improperly support the bicycle.

The couplings are designed to acommodate a certain style of quick-release lever.

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If you use an incompatible quick-release lever, it may not be properly supported be the
coupling --- so you must change your quick-release to the correct style in order to
prevent accidents.

The yellow levers control the release and placement of the rollers to the rim. By adjusting

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these levers, you will see that the two rollers contact the rim sidewall with equal tension.
If they are not resting on the rim properly, but on the tire, then you must re-adjust the height of
the drive pulleys so that the roller contact is solely with the rim. (see Fig. H)

If the rollers are rubbing against or touching

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the tire, it may cause the tire to burst.
Roller-to-rim contact ONLY! (see Fig. I)

Be careful not to pinch fingers in springs while adjusting.

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(see Fig. J)

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(Fig. H)

(Fig. I)

(Fig. J)

To remove your bicycle from the trainer:

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First, push down both yellow levers, which releases the
rollers and drive pulleys from the bicycle rim, and then
rotate the hub-clamp counter-clockwise until loose, and pull
out the bicycle. (see Fig. K)

(Fig. K)

USING THE MAGTURBO UNIT

The Magturbo unit has seven different levels of load force, replicating actual riding resistance.
The load settings range from high (H) to low (L) and can be adjusted via the yellow lever on the
Magturbo unit. The rider may also adjust the load force by shifting up or down among his 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 muscled warm up.

To decrease the load force, move the yellow lever on Mag unit toward
the (L) symbol. The lowest selection is not zero load; there still be a
small level of force.
When your Mag unit is a remote control type, twist the lever on your
handlebar toward the (L) symbol.

To increase the load force, move the yellow lever on the Mag unit
toward the (H) symbol.
When your Mag unit is a remote control type, twist the lever on your
handlebar toward the (H) symbol.

You must not be riding the Inter-Rim trainer when you are adjusting the yellow lever

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for load force. Make sure all parts have stopped spinning. Do not try to adjust the
lever with your feet while riding.

OPTIONS

In 1998 Minoura is offering an option to the RDA Magturbo system called “ICE (Interactive Cycling
Experience)” system.
This computerized option will give the rider continuous automatic load changes according to pre­programmed software supplied by UltraCoach in California, U.S.A..
This easy-to-install unit provides a more enjoyable and accurate training experience.

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REPLACING YOUR DRIVE ROLLERS

When you first start riding, the Inter-Rim’s rim rollers may be stiff and cause the rim to slip. But the
rollers will soften after a few rotations and will impart the proper rim grip. The rubber rollers may melt
or wear by heating from longtime use.
The rim-drive rollers will eventually wear and need to be replaced. When you find that your load force
has diminished altogether or that you feel some vibrations that cannot be avoided through minor
adjustments, then it is time to invest in a “roller replacement set”, available from your Minoura dealer.

To remove: Apply a 10mm wrench to the nut behind the pulley while

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turning the bolt with a M4 hex wrenc h. (see Fig. L)

If you are changing the roller on the Mag unit (left) side, go to step

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3.
To change the roller on the assistant-roller-unit (right) side, pull back
the pulley and remove the rubber roller.

(Fig. L)

To remove the pulley on the Magturbo unit (left) side, you must

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loosen the two bolts that are located on the surface of the Mag unit
with a M4 hex wrench.
Push the Mag unit in the direction of the drive roller to loosen the
V-Belt and then pull out the pulley. (see Fig. M)

Do not remove the bolts that control the

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tension on the V-Belt.

As you did with the right-side roller in step 2, pull out

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rubber roller from the pulley. (see Fig. N)

Be sure to replace both rollers at the same time to

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prevent uneven wear to the rim and to ensure a
more balanced ride.

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Drive pulley

Rubber roller

Plastic shaft

Under pulley cover

(Fig. M)

(Fig. N)

After replacing the rollers, you must fix the pulley’s upper and lower covers firmly.

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On the Mag unit side, after applying the pulley you must pull the Mag unit to tension the V-Belt.
Then, tighten the two bolts while holding the V-Belt in the proper tension.

When you fix the upper and lower roller covers, you must

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make sure these covers are parallel.
If the covers are not parallel, it may result in vibration that may
loosen the rollers and cause an accident. (see Fig. O)

MAINTENANCE AND SERVICE

(Fig. O)

• If strange noises or vibration persist, discontinue use immediately and return to your Minoura dealer
or place of purchase for assistance. You may also contact Minoura Co.,Ltd.: 1197-1 Godo, Anpachi,
Gifu 503-2305 Japan, or contact to Minoura North American R&D Center at 1-510-739-1395.

• Always check for tightness of bolts and nuts before using.

• Check V-Belt and couplings for excessive wear or damage.

• Remove all oils and moisture from drive pulleys and other devices.

• Keep dry and out of weather.

NOTE ON DISPOSAL

To dispose of an old or broken trainer, please disassemble as much as possible

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and recycle properly.
Do NOT dispose of trainer in trash. Harmful gas may occur if burned.
Keep abandoned parts away from children.

700W

600W

Slope Level and Resistance

500W

400W

300W

200W

100W

0W

-100W

5km/h

10km/h

15km/h

20km/h

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25km/h

30km/h

35km/h

4%
3%
2%
1%
0%

-1%

40km/h

350 W

300 W

250 W

LOAD LEVEL OF EACH LEVER POSITION

H
5

200 W

6
4

150 W

3
2

100 W

50 W

0 W

0 km/h

The RDA Magturbo can simulate a maximum upward slope of 4 percent.
These data were measured on official testing equipment at the Japan Bicycle Technical Center. They
may very according to size of the bicycle and rim and weight of the rider.

5 km/h

10 km/h

15 km/h

20 km/h

25 km/h

30 km/h

35 km/h

40 km/h

L

EFFECTIVE TRAINING INSTRUCTIONS

Effective training requires some load resistance. Even in the minimum load setting, the Inter-Rim Ergo
offers some resistance. A gradual increasing of the load force is better for your muscles and a more
effective form of training.
By manipulating the load force and your bicycle gears, you can get your preferred level of resistance.
We reccomend that you consult a knowledgeable fitness trainer about your personal training program.

Always stretch before riding the trainer, warm up when you begin riding, and cool

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down slowly when you are finishing your session.
This will help to avoid injury to muscles and joints.

For best results, it is important to maintain a consistent cadence through any

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changes in load force.

Next page is a sample trainer workout for a rider who is using a mountain bike with the Inter-Rim Ergo
trainer. This exact workout may not be suitable for everyone, but you can modify the gear ratio and
load settings to suit your power and preference. If you need further guidance, please ask a professional
for a personal training program.

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WORKOUT SAMPLE

Front chainring* Rear cog Cadense

15 minutes Middle 28T 90 rpm

10 minutes Middle 24T 90 rpm
10 minutes Middle 21T 90 rpm
10 minutes Middle 18T 90 rpm
10 minutes Middle 16T 90 rpm
10 minutes Middle 14T 90 rpm

15 minutes Middle 21T 70 rpm

* You may shift to the outer ring, but the inner ring will not be effective for training.

NOTE ON HIGH SPEED TRAINING

This magnetic resistance device may be able to realize you such an impossible situation as you can run
at over 35 MPH speed easily because your tire doesn’t contact the earth, but only the rollers. As you
know, in fact, there is no way when you ride on the road, but you can do it on this Inter-Rim Ergo
trainer with lowest resistance load force and high gear ratio. And such a stupid high speed training may
cause a problem on bearings and/or shaft.
This magnetic resistance device is designed for usual training under 35 MPH (56 KPH) speed, so you
should keep your training speed under the limit.
If there is an awful noise or vibration from your magnetic resistance device during your training, please
contact your purchased dealer or Minoura immediately.

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REPLACEMENT PARTS

You can get the following replacement parts for your Inter-Rim trainer through your local dealer;

ORDER #400-1240-00

DRIVE ROLLER (MAG UNIT SIDE)

ORDER #400-1241-00

ASSISTANT ROLLER
(TENSION ROLLER SIDE)

ORDER #400-1255-00

35mm DIAMETER RUBBER FOOT CAP

(This part is not compatible with 1998 or older model.)

ORDER #400-1243-00

COUPLING UNIT (REAR COG SIDE)

ORDER #400-1244-00

COUPLING UNIT (QUICK-RELEASE
SIDE)

ORDER #400-1242-00 ORDER #400-1246-00

TENSION ROLLER LEVER

ORDER #400-1247-00

V-BELT (K-16)

ORDER #400-1245-00

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HUB HANDLE

MAG REMOTE
CONTROL
SHIFTER KIT

RESOLUTION DIAGRAM

FOR MORE INFORMATION ON YOUR MINOURA TRAINER

MINOURA NORTH AMERICAN CENTER FOR RESEARCH, DEVELOPMENT
AND MARKETING

37653 B Argyle Rd., Fremont, CA 94536 U.S.A.
Phone [phone] / Fax [phone]
E-mail : [e-mail]

MINOURA TECHNICAL & WARRANTY CENTER

Toll Free 800-601-9592

MINOURA CO., LTD.

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

MADE IN JAPAN

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