NEO V1.1

NEO V1.1 Overview

The REV NEO Brushless Motor V1.1 (REV-21-1650) is the initial update on the first brushless motor designed to meet the unique demands of the FIRST Robotics Competition community. NEO V1.1 offers an incredible power density due to its compact size and reduced weight, and it's designed to be a drop-in replacement for CIM-style motors, as well as an easy install with many mounting options. The built-in hall-effect encoder guarantees low-speed torque performance while enabling smart control without additional hardware. NEO V1.1 has been optimized to work with the SPARK MAX Motor Controller (REV-21-2158) to deliver incredible performance and feedback.


  • Drop-in replacement for CIM-style motors

  • Shielded out-runner construction

  • Front and rear ball bearings

  • High-temperature neodymium magnets

  • High-flex silicone motor wires

  • Integrated motor sensor

    • 3-phase hall sensors

    • Motor temperature sensor

New to NEO V1.1

  • A tapped #10-32 hole on the end of the shaft, allowing teams to retain pinions on the shaft without using external retaining rings

  • A tapped #10-32 hole on the back housing of the motor, making it no longer necessary to remove the motor housing to press pinions

  • Additional holes on the front face of the motor for added mounting flexibility

Wiring Connections

Connecting the NEO V1.1 Brushless motor is fairly straightforward. Follow the guide at Wiring the Spark Max, and don't forget to connect your sensor wire; the motor will not spin without it!

CAUTION: Improperly wiring the connectors can cause severe motor damage and is not covered by the warranty. DO NOT connect the motor directly to the battery.

Motor Specifications

ParameterValue and Units

Nominal Operating Voltage

12 V

Motor Kv

473 Kv

Free Speed`

5676 RPM

Free Running Current

1.8 A

Stall Current

105 A

Stall Torque

2.6 Nm

Peak Output Power

406 W

Typical Output Power at 40 A

380 W

Hall-Sensor Encoder Resolution

42 counts per rev.

Mechanical Specifications

ParameterValue and Units

Output Shaft Diameter

8mm (keyed)

Output Shaft Length

35mm (1.38in)

Output Pilot

19.05mm (0.75in)

Body Length

58.25mm (2.3in)

Body Diameter

60mm (2.36in)


0.938 lbs (0.425 kg)

NEO V1.1 Motor Curve

All of our motor testing was performed on our in-house dynamometer.

Check out the NEO Motor Data Sheet for additional information! Please read the NEO Motor Locked Rotor Testing and ensure you understand how to set an appropriate Smart Current Limit before using your NEO Brushless Motor.

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