Frack 1.0 is a basic Parallax SumoBot chassis. The only modifications I have made are to add Solarbotics wheels with the tire already attached, increased the batteries to 6 NiMH, and changed the servos to GWS S03N 2BB servos. I believe these servos to be a little faster than the supplied Parallax servos. I modified the basic SumoBot code to run faster and respond quicker to sensors. Frack 1.0 is just a test platform for ideas I am working on.