Intra Drive’s new drive unit combines proprietary multi-speed gearbox technology, a lightweight brushless motor, and a novel electronic shifting system, resulting in a compact and highly integrated 8-speed drive unit.
Intra Drive’s vision of a zero maintenance ebike drivetrain is achieved by doing away with derailleur gearing and instead using a proprietary sealed gearbox. Hardened steel gears running in oil ensure an extremely long lifetime of the product, with very low maintenance. This highly optimised design weighs no more than the market-leading competition and offers additional benefits including improved weight distribution, clean aesthetics, and integrated electronic (wireless) shifting.
Currently the motor units fitted to the majority of new ebikes, from the mid-range price point and upwards, are manufactured by market leaders Bosch, Shimano and Yamaha. These powerful “mid-drive” motors transmit drive through the chain and derailleur gearing system to the rear wheel. The derailleur gearing system has evolved to be an effective system for conventional bicycles, however, suffers accelerated wear when exposed to the additional power from a mid-drive motor. This results in the need for frequent replacement of these costly drivetrain parts.