The NeveRest 40 is a 40:1 reduction gearmotor with an attached encoder.

• Description
• Specifications
• Documentation

• The NeveRest 40 is a gearmotor with an attached encoder. The output shaft geometry and the gearbox housing diameter is similar to what FTC teams are familiar with. The shaft is a 6 mm D and the gearbox housing is 37 mm diameter.

  The power cable which feeds into the black encoder housing has two different options that are already crimped to the end of the cable. (select your needs above):

  1. NEW for 2020! JST-VH-2 connectors Option: this option plugs directly into the FIRST Tech Challenge REV Controller
  2. Anderson Powerpole 15A connectors Option

  FIRST Legality:

  • According to the FIRST Tech Challenge Game Manual, all versions of the NeveRest motor are legal in FTC.
  • According to the FIRST Robotics Competition Game Manual, all versions of the NeveRest motor are legal in FRC as it uses the NeveRest am-3104 motor.
    

  Encoder:
  There is an encoder mounted to the backside of this motor. It is a 7 pulse per revolution (ppr), hall effect encoder. Since the motor's gearbox has a 40:1 reduction, then the NeverRest 40 output shaft provides 280 ppr.

  Encoder Cable Options:
  NeveRest motors do not come with an encoder cable as we offer 3 cable options:

  am-3926a allows you to connect the encoder directly to the FIRST Tech Challenge REV Controller.
  am-2992 has the 4 encoder pins joined in one housing using standard 0.1 in. spacing.
  am-2993 allows you to break out the 4 pins separately if you need them in a different order.

  Working with the Encoders:

  • https://ftc-tricks.com/dc-motors/
  • https://www.youtube.com/watch?v=d0liBxZCtrA

  Performance Specs:
  Force Needed to Break Gearbox: 1478 oz-in
  Time to Failure at Stall: 2 minutes, 54 seconds
  Motor Case Temperature at Failure: 190 degrees F
  If you need the output shaft to be a 1/2 in. Hex, check out the 6 mm D to 0.5 in. Hex-Shaft Adapter (am-3744a)
• • Back Drive Force: 0.067 ft-lb [0.09 N-m]
  • Connector Type: JST-VH-2, Anderson Powerpoles
  • Free Current: 0.5 A
  • Gauge: 18 AWG
  • Gear Material: Steel
  • Material: Steel with Plastic Encoder Housing
  • Maximum Diameter: 1.500 in. [38 mm]
  • Maximum Power: 14 W
  • Mounting Geometry: 6 M3 x 0.5 in. on a 1.220 in. [31 mm] Bolt Circle
  • No Load Current: 0.4 A
  • No Load RPM: 160 RPM
  • Output Shaft Size: 0.240 in. [6 mm] D Shaft
  • Overall Length: 5.250 in.
  • Poles Per Magnet: 7
  • Ratio: 40:01:00
  • Shaft Hardness: 45-50 Rockwell C
  • Stall Current: 11.5 A
  • Stall Torque: 1.823 ft-lb [2.472 N-m]
  • Ticks Per Revolution: 1120
  • Voltage: 12 VDC
  • Weight: 0.767 lbs.