At the bottom there are two attachments. One is a PDF with the motor data, the other is a PDF image with a sketch of the base of my design(please forgive me if the sketch is badly drawn.)
Now to answer your questions. The system will speed up in proportion to the users kick. These things are essentially just going to be roller blades with motors attached. Yes a person is going to be wearing them. the gearbox needs to fit in a cylinder of aproxamately 8cm in diameter and .8cm in depth(it has to fit inside of the wheel). The motor itself is about 2cm in diameter and I dont know how thick it is. There is also an attached file that has draft designs for the tire rim.
Attachment 9214
Attachment 9215
Attachment 9216