Description

This is the Qulbix pedalling system with adjustable chain wheel tensioner, which can also be used as a bracket for PAS sensor. The crank length is 120 mm which is intended for easier cornering and pedalling at higher speeds. Longer cranks are not possible since they would interfere with the motor axle. Overdrive system allows pedalling up to maximum speed, effectively as only one 75T chain-wheel would be used. The system does not include Bottom Bracket bearing and Pedals.

Compatible with Q144 frame kits and Q140MD bikes (2017-2021).

Older version with M10x1.5 bolt: Please note that when installing the main crank axle bolt to apply a generous amount of bolt sealant and tighten with at least 85 Nm of torque. Leave to settle, before applying force to pedals!

Newer version with M10x1 bolt: Please note that when installing the main crank axle tighten with 45 Nm of torque. Bolt sealant application is not necessary because of the fine thread.

When installing BB use one spacer on each side of the cup. 

Additional information