1. Bicycle Hub Motor - the armature lives on or near the rim, an will consist of many small magnets. The fields will be a series of electromagnets that are pulsed. I suspect that you need to have a hall sensor set up to time the firing of the magnets.

2. High Watt-Hour Bicycle Battery-enough to travel 25miles --> Lithium Ion. This is 70 cells of the type 18650 wrapped on a cylinder. 10 Cells in parallel to get the amps, and 7 in series to get the volts-25.

3. An electric high efficiency car. My idea on this is to use a motor on each wheel. In order to do this, I would incorporate sub-frames. A sub frame is a sheetmetal framework that supports the suspension, the steering, and the drive shafts. They can be obtained from the auto junk yard. The drive motors will be mounted to the frame, and drive the constant velocity joints through belts (probably need a gear reduction). The frame between the front and rear sub frames will be talored to house a battery pack (like the Volt). This way, I can have a motor per wheel. (This is really dreaming!)

4. Currently, I am exploring the engineering behind variable frequency drives. A VFD is the electronics that change ACvoltage to variable frequency AC voltage. AC motors are better that DC motors for a couple of reasons. 1). They will rotate at higher RPM's and 2). They allow regenerative braking. Typically AC drives are used for HVAC fans and other processes where money can be saved by rotating a motor at slower speeds than synchronous speeds. In an automotive application, the battery pack voltage needs to be set at 220 volts in order to use off the shelf VFD drives. In order to test and verify that one of these drives will work, I would probably prototype a system with batteries, and the drive, and the motor connected to an inertia, to simulate a vehicle load.