"How Things Work" has a video and some pretty detailed text about what's
inside the Segways. He

http://videos.howstuffworks.com/segway-mini-video.htm

Jeff (Who still regards the Segway as the answer to the question nobody
asked...)


--
Jeffry Wisnia
(W1BSV + Brass Rat '57 EE)
The speed of light is 1.8*10^12 furlongs per fortnight.