http://etmpower.com/our-motors/500w-...t-drive-motor/

"500W e-Bike Direct Drive Motor

Transverse flux motors from Electric Torque Machines (ETM) provide direct drive solutions for demanding applications. ETM's e-bike hub motors offer smooth, strong, efficient hill climbing and acceleration in a small package.

Features and Benefits

ETM proprietary transverse flux motors provide a 3X continuous torque advantage over conventional motors:

Best-in-class hill climbing and efficiency

Compact size

Quiet direct drive smoothness and reliability

Disk brake compatible

Optional 9/10 speed cassette or freewheel

Optional 10mm flatted or 12mm through axle

Power and speed range configurable for EU and US applications"