Description

The Pololu Zumo chassis kit contains the components necessary to build a small, high-performance tracked robot platform that is compact enough to qualify for Mini Sumo competitions. Each side of the chassis has an idler sprocket that spins freely and a drive sprocket that connects to a micro metal gear motor (not included). The main body is composed of ABS plastic and has sockets for two micro metal gear motors and a compartment for four AA batteries (not included). The battery compartment terminals protrude through the chassis and can be accessed from the top side. A black acrylic plate is included with the chassis. This plate holds the motors in place and can be used for mounting your electronics, such as your microcontroller, motor drivers, and sensors.

Features and Specifications

• Size: 98 x 86 x 39 mm
• Weight: 7.5oz

Available Options

The Zumo chassis uses two motors, one for each tread. The ideal motors for your robot depend on your desired torque, speed, and current draw, so motors are not included with the chassis. If you have limited ability to supply current, we recommend using lower-power non-HP motors, which have a stall current of 360 mA at 6 V; if you have the ability to deliver more current, the HP micro metal gearmotors offer more torque and speed for the same gear ratio.

Micro Metal Gearmotor

• 100:1 HP
  • Speed @ 6V: 320 RPM
  • Top Zumo Speed @ 6V: 25 in/s (65 cm/s)
  • Stall Torque @ 6V: 30 oz-in
  • Stall Current @ 6V: 1600 mA

• 75:1 HP
  • Speed @ 6V: 400 RPM
  • Top Zumo Speed @ 6V: 32 in/s (80 cm/s)
  • Stall Torque @ 6V: 22 oz-in
  • Stall Current @ 6V: 1600 mA

• 50:1 HP
  • Speed @ 6V: 625 RPM
  • Top Zumo Speed @ 6V: 50 in/s (130 cm/s)
  • Stall Torque @ 6V: 15 oz-in
  • Stall Current @ 6V: 1600 mA

Documentation

• Assembly Instructions

Recommendations

• This chassis works with four AA batteries. We recommend AA 2600 mAHr NiMH batteries.