[Simon] used 3D printed brackets to mount outrunner brushless motors to the back of a pair of ice-skates. The spinning outer housing of the motor is used as the wheel, with a bunch of studs ...

This bike has a 2-speed transmission and a massive Turnigy 80-100 brushless outrunner motor, which pushes out a top speed of 45mph. You may have noticed what look like training wheels in the ...