Minoura Japan – AC-Pro

The biggest benefit of rollers is its natural riding feel.
You can enjoy very realistic riding feel such as steering little by little for maintaining your balance on the freely spinning roller drums. It cannot be expected on any stationary trainer that holds your bike stiffly.

The steering character will be changed to very quick on rollers, so you need to keep the correct riding theory that you must sit on the saddle center properly and hold the handlebar softly. Otherwise, your front wheel will lose stability, will be shaken side by side, then it becomes quite hard to maintain balance.
In other words, we can say you will able to do the perfect riding even on actual road – maximum performance with minimum power – if you can ride smoothly on rollers.
Rollers is the best tool to learn the total riding skills.

The bike on rollers is not supported at all. It just stands on freely spinning rollers by the gyro moment from wheels. Therefore, you may fall off once you lose balance.
This is the point people feels that rollers is not familiar with beginners. But you don't need to worry about it so seriously. We are sure you can get learned quicker than you imagine.

You need to concentrate on riding on rollers. You may not be able to watch TV or stretch your body when get tired while you are on rollers. We say you need to train seriously and excitingly on rollers, therefore you won't be bored.
Don't worry, these things can be done after some training.

In addition, rollers will not apply so much resistance to the tire, so you can expect much longer tire life.
People usually replace the tire from the expensive new one to the old one for using stationary trainer just before the race for warming-up, but it is not necessary if you use rollers.

In general, the biggest problem on rollers is its louder noise.
Even though we put an insulator in each roller drum to reduce the noise as much as possible, the total noise level must be higher than stationary trainers. So we don't recommend you to use rollers indoor if your neighbors are nervous to noises.

Dancing on rollers is not recommended even if you are an expert rider.
Also do not apply braking while on rollers. You will be dangerously blown backward.

Basically, trainer is the equipment for changing your body how fast you ride. Both stationary trainer and rollers are designed for this purpose, but each type has its own benefit.

The stationary trainer that clamps the rear wheel is mainly for building up muscles and increasing cardiopulmonary function. It gives artificial resistance to simulate climbing up the slope.
Please note if you are focusing too much on just building up muscles, your pedaling technique should become worse that you just push down the pedal strongly. It's not good for smooth and fast riding. Imagine "rotating" on pedaling.

On the other hand, rollers is focusing on getting total riding skill rather than just building up muscles. You can learn correct riding position and more effective pedaling technique that make your actual riding faster and more powerful.
Once you become to ride on rollers without any unnecessary movement, it means you can also ride on road smoother, safer and faster.

Our standard rollers have light alloy frame for easier transportation, but AC-Pro has super heavy (over 22 kgs) steel frame. This is for absolute stability rather than portability.

The frame has double layered paint finish to avoid getting rust caused by adhered salty sweat during session.
The frame is foldable into two for compact storage when not in use.
A retractable foot step is built in on the left side pivot area. On rollers, bike is positioned much higher than usual in the distance of the roller drum diameter, so it is impossible to reach the floor even if you fully extend your leg. Foot step helps to support yourself when getting on/off the bike. The upper surface has anti-slip rubber sheet.

The roller drum is the biggest benefit of AC-Pro.
The drum size itself is exactly same to Action Magroller Wide (105 x 450mm), but its design is completely different from standard models.
The drum thickness is much greater than other models to increase the durability and quietness. Also the size of bearing and roller axle are much larger than standard models in order to absorb hard sprint dash by professional riders.
The roller end cap is usually made of plastic, but the AC-Pro's is made of machined steel to be much heavier and to use it as a flywheel. 3 roller drums totally have 6 flywheels, the total weight becomes 7.5 kgs! With this moment of inertia, you can enjoy super smooth pedaling and great resistance when accelerating speed.

• If you are just beginner, you must be supported by a well skilled helper. Use rollers along a wall or handrail for your safety.
• Do not apply any force to handlebar, and sit in the center of the saddle.
• Dancing on rollers is not recommended.
• Set the front roller in the correct position to fit your bike's wheelbase perfectly. If the front roller is in wrong position, you may fall off.
• Do not apply brake at all times on rollers. You will lose balance and fall off suddenly. To stop training, just stop pedaling and wait the speed is reduced.
• Maintain the tire air pressure correctly before use. Roller drum compresses the tire much harder than ground, so if the air pressure is low, the tire will be deformed and may have damage.
• Do not touch the spinning wheel, roller and belt to avoid injury. Keep children and pets away from rollers during session.
• On rollers, the front wheel also spins. Do not hang towel on the top-tube or handlebar to avoid accident.
• Do not stand on the roller drums.
• For 26" or larger wheel bike only. Any smaller wheel is not suitable due to too short wheelbase and hard to maintain the bike level.
• AC-Pro cannot mount any additional resistance unit.

Training Mat 2
A floor mat to protect the floor or carpet from scratch and stain, and reduces the vibration to the floor up to 75%
Extra Pad Set
A set of 4 soft foamed PVC 100 x 100mm pads. Just put beneath the trainer legs to reduce the vibration to the floor
Safe-T Net 2
100% cotton frame protection net catching salty sweat while training

• SKU 400-3600-00
• Resistance Adjustability None
• Applicable Wheel Size 26 – 27-inch, 650c – 700c
• Roller Drum Size D 105 x W 450 mm
• Dimension D 1,330 x W 540 x H 140 mm (excluding handle & foot step)
• Wheelbase Adjustability 960 – 1,085 mm
• Net Weight 22.2 kgs
• Max Load 150 kgs (including bike weight)
• Accessories Instructions manual, Warranty policy card
• MSRP US$669.99
• Warranty Period 1-year (roller drum) / 5-year (frame)

On rollers, the tire is compressed much harder than road because the roller drum contacts the tire much sharper than flat road.
If the tire air pressure is low at this moment, you hear the squealing noise when the tire moves side to side on the roller.
To solve this problem, inflate the tire to maintain the air pressure to normal or more (up to 20% plus).

If the tire is in cold condition, you should hear same squealing noise. In this case, it should be disappeared after one minute ride.

The roller belt connects the front and mid rollers to drive the front wheel together with the rear wheel. On rollers, it is necessary to spin both front and rear wheels to generate the gyro moment to stand the bike.
If the belt has been broken, you cannot stand on rollers at all.

Our roller belt is made of flexible urethane material so it is completely universal on every rollers from old to new.

To re-joint the roller belt, put both belt ends onto hot iron for melting, then rapidly put them together while they are melted.
Of course, you can simply replace the roller belt to the new one. The replacement belt is available from your local Minoura dealer.

Be careful when handling hot iron.