Dagu Rover 5 Tracked Chassis with Encoders. This tracked chassis from Dagu Electronics makes a great base for building a small tank-like RC vehicle or autonomous robot. The chassis includes a battery holder and two DC motors, with an independent drive train and a quadrature encoder for each tread, so all you need to add to make a complete robot is a robot controller and the sensors of your choosing. A unique mechanism allows you to configure the clearance of the chassis by adjusting the angle of the gearbox assemblies.