Pololu 5 Robot Chassis RRC04A Solid Black Pololu 5 round robot chassis RRC04A with an Orangutan SV-328 and a QTR sensor array. Overview The 5 robot chassis RRC04A is an 1/8 acrylic chassis that provides a base for our micro metal gearmotors, extended brackets, and 4219mm wheels. The robot chassis has many mounting holes that let you mount a variety of robot components to it. With a diameter of only five inches, this acrylic chassis is great for building robots capable of navigating tight spaces. The RRC04A robot chassis is available in a variety of colored (and clear) acrylics: solid red solid black solid blue solid white solid light-blue transparent clear transparent gray transparent light-blue The Pololu 5 robot chassis RRC04A is available in a variety of colors.Required Components (not included) Two Pololu micro metal gearmotors (30:1 through 210:1 gear ratios are usually reasonable). One Pololu micro metal gearmotor bracket pair, one 4219mm wheel pair. (Encoders are optional you can get them with the wheels and brackets in the wheel and encoder set.) One of Pololu ball caster with 3/8 plastic ball, Pololu ball caster with 3/8 metal ball, or Pololu ball caster with 1 plastic ball. Pololu 5 round robot chassis RRC04A mounting locations. Note: Note that the 1000:1 micro metal gearmotors have longer gearboxes than the other gear ratios and will only work with this chassis if you modify it to have larger wheel wells, though gearmotors like this are generally poor choices for robotic propulsion (unless your goal is to make an agonizingly slow snail robot). Some Compatible Components The Orangutan SV-328 robot controller, Orangutan SV-168 robot controller, and Orangutan LV-168 robot controller with six different mounting options. The Arduino Duemilanove controller board with four different mounting options. The QTR-8RC reflectance sensor array (both six and eight sensor options) with four