I have been working on an upgrade for the Alternator motor turned BLDC motor. Now it's going to have speed control using PWM on the 555 timers reset pins. Plus a general rebuild as it has been sitting for while! I hope it's informative! Leave a like and a comment if you think so!
Board and Schematic are at http://www.neato3000.com/alternator-driver-pwm-speed-control-upgrade/