Here is a video where I use two motors wired correctly as shown in the schematic in the video, where one motor is ran by one battery which turns another motor used as a generator which also recharges another battery. Sorry the video is a little dark, but the schematic can be seen clearly in the video. http://www.youtube.com/watch?v=3NKi_1Iz1io (http://www.youtube.com/watch?v=3NKi_1Iz1io)