The compact, light weight center mount unit
There are two main advantages in center mount type units. First, the gears originally equipped to the bicycle can be utilized as a part of e-Bike systems, allowing for optimal motor performance. Second is weight distribution. Centralization of mass leads to a natural weight balance while riding and while stopped, retaining the superior weight distribution of a bicycle.
We have succeeded in developing one of the world's smallest and lightest drive units. This involves the direct transmission of the motor power to the crankshaft, providing for a minimal exterior design. The high-power motor has ample amounts of low-down torque, making electrical assist on hills and gravel roads - under the hardest of conditions - extremely powerful.
|Instantaneous maximum value at pedal crank axis||< 2.8||< 1.9||< 1.0||< 0.5|
Image of the torque at starting
Motor torque / Input torque
Notes: These figures are standard numerical values of YAMAHA.
These figures may change depending on the differences in a characteristic setup, and the differences in vehicles composition.