Support Center >


Ampler motor

All Ampler bikes have a small geared hub drive with a brushless DC Aikema motor, branded by Ampler. Brushless DC motors mean that there are no brushes between the stator and the rotor. This makes the motor efficient and means that there are no wearing parts in need of replacement, making it essentially service-free.

The motor has a nominal power output of 250 W. The peak power output of the motor is about 400 W. The motor complies with all European regulations.

Operating the motor requires sophisticated electric systems. We’ve custom-developed a control board which ensures smooth and quiet operation even at high power levels. The hub motor includes double gear reduction to get a maximum torque of 40 Nm at a motor diameter of just 120 mm, allowing for a high power-to-weight ratio while keeping the looks inconspicuous.

What is a torque sensor?

Ampler bikes are pedelecs and they have sensors regulating the motor, measuring the speed and your own input. Therefore, the bike is easy to use and the motor power is controlled by your own pedalling force. This guarantees a safe and smooth riding experience.

Is there any motor resistance?

The motor has a built-in free-wheel, which means that there’s no resistance from the motor when the motor is not assisting (for example, when your battery is empty or when you’re going faster than the assistance speed limit you’ve set).

Does the motor recuperate energy?

No, it does not.

How does the motor support work?

The bikes have automatic motor support – the bike is constantly measuring how hard you pedal and regulating the torque using that information. You can change the motor settings from the smartphone application when you’re connected to your bike via Bluetooth.


Popular questions

Subscribe to Ampler bikes news