His drive train is two GWS S03TXF 2BB servos converted for full rotation from an external H-Bridge.
At the moment the H-Bridges are two FAN8200's with both sides paralleled together. However, I learned recently that the FAN8200 are BJT powered, so the paralleling isn't really working. Hopefully I'll be able to upgrade to a couple of TA8050's by contest time.
The batteries are three of Eddy's cell phone batteries with the protection circuitry removed.