With the goal of developing an extremely lightweight and above all compact wheel hub motor, Kappstein is introducing the new B3 motor weighing just 2.5 kg and with the diameter of a geared hub, this powerful lightweight is designed as a direct drive, making it much quieter than standard geared motors and providing a very smooth riding performance.

SPECIFICATIONS

Type: BLDC direct drive motor
Nominal capacity: 250W
Maximum output: 400W
Voltage: 36V
Torque: 25Nm
Efficiency: 86%
Torque sensor: internal
Controller: internal
Communication: various options

Spokes: 28, 32, 36
Diameter: 110mm
Weight: 2.6kg
Performance: smooth running
Axle: M10, thru axle
Brake: 6-bolt adapter
Miscellaneous: no screws, clean look, internal heat sensor

The 2-speed bottom bracket gearbox “Doppio” from Kappstein is a compact, light and comfortable transmission unit in the bottom bracket bearing. Thanks to the extremely compact design, the entire gearbox is only 1cm wide and only about 200g heavier than conventional bottom brackets. The Doppio offers the driver a ratio of 1.57 in the heavier 2nd gear. This allows the number of gears to be increased with many possible combinations.

Type: Mid-Motor

Shape: Cylindrical

Max Torque: 95Nm (standard); 75Nm (light)

Weight: 2.2Kg (Standard); 1.8Kg (light)

Size: ø90mm only

Benefits: Narrow Q Factor, Standard ISIS shaft (suitable for any ISIS crankset)

The SF-HUB has a noiseless freewheel and simultaneously excels with close to zero backlash. This instant engagement means that the energy that the rider applies to the pedals is transferred directly to the rear wheel without the annoying backlash. This is made possible due to a modified, innovative principle with regard to the conventional roller freewheel. An exceptional riding experience that will never cease to surprise every time.

With the goal of developing an extremely lightweight and above all compact wheel hub motor, Kappstein is introducing the new B3 motor weighing just 2.5 kg and with the diameter of a geared hub, this powerful lightweight is designed as a direct drive, making it much quieter than standard geared motors and providing a very smooth riding performance.

SPECIFICATIONS

Type: BLDC direct drive motor
Nominal capacity: 250W
Maximum output: 400W
Voltage: 36V
Torque: 25Nm
Efficiency: 86%
Torque sensor: internal
Controller: internal
Communication: various options

Spokes: 28, 32, 36
Diameter: 110mm
Weight: 2.6kg
Performance: smooth running
Axle: M10, thru axle
Brake: 6-bolt adapter
Miscellaneous: no screws, clean look, internal heat sensor

The 2-speed bottom bracket gearbox “Doppio” from Kappstein is a compact, light and comfortable transmission unit in the bottom bracket bearing. Thanks to the extremely compact design, the entire gearbox is only 1cm wide and only about 200g heavier than conventional bottom brackets. The Doppio offers the driver a ratio of 1.57 in the heavier 2nd gear. This allows the number of gears to be increased with many possible combinations.

Type: Mid-Motor

Shape: Cylindrical

Max Torque: 95Nm (standard); 75Nm (light)

Weight: 2.2Kg (Standard); 1.8Kg (light)

Size: ø90mm only

Benefits: Narrow Q Factor, Standard ISIS shaft (suitable for any ISIS crankset)