A4WD3 Frame Only

Last modified by Eric Nantel on 2023/11/03 07:04


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Table of Contents


The Lynxmotion A4WD3 Rugged Rover is a general purpose mobile robotic platform. The frame is intended to be used in three configurations: 4WD; Mecanum & Tracked, and variations of each platform include without electronics (so developers can integrate their own parts); an RC version and microcontroller-based for autonomous or semi-autonomous use.

The machined aluminum frame integrates rotary seals around each motor shaft, and solid rubber cord between the frame and all panel openings, making it dust and water resistant. A large marine inspection hatch on the top panel provides easy access to internal parts as well as being able to quickly swap or recharge batteries. Aside from the internal electronics mounting plate, the platform is symmetric and can be inverted.

The rover includes four powerful 12V DC motors coupled to 51:1 all metal planetary gears. The rear shaft of each motor is equipped with a magnetic encoder which provides 12 pulses per revolution (PPR). These motors provide 4WD and allow the rover to reach a top speed of around 3m/s (120”/s) without payload. 

Front and rear access panels are made of G10 composite and are intended to allow users to machine openings to add their own components, which may include a wired tether for power and control, LED or LCD feedback, a handle, or whatever else their application may need. Included are a pair of transparent polycarbonate panels which allow for an internally mounted camera and/or or LED lights for increased visibility. Additional panels are available separately.


  • 4x planetary geared DC motors (12V) with rear encoders
  • Machined aluminum frame with G10 composite plates
  • Shaft seals & solid rubber cord for water and dust resistance
  • Internal mounting plate for electronics & battery


A4WD3 Chassis

  • Weight: 3.12kg (6.89lbs)
  • Rating: Water and dust resistant
  • Chassis: Aluminum frame & G10 (fiberglass) Pannels


  • Output Shaft: D-Shape 8mm
  • Operating Voltage: 12VDC
  • Gears: Metal planetary gear
  • Unload Speed: 170RPM (±10%)
  • Loaded Speed: 145RPM (±10%)
  • Torque: 11.5kg.cm (9.98lb.in)
  • Gear Ratio: 51:1
  • Current: ≤3A


  • Operating Voltage: 5V
  • Signal: Square wave AB 90 deg,
  • Pulse: 12 PPR
  • Frequency: 800kHz


  • Length: 320mm / 12.598"
  • Width: 241mm / 9.488"
  • Height: 78.5mm / 3.091"

CAD Files

User Guide


A4WD3 Frame Only Rover KIT steps:

What's Included

A4WD3 Parts
2x - A4WD3-FP2x A4WD3-SP1x A4WD3-TP1x A4WD3-BP1x A4WD3-EP2x A4WD3-FA-L
Front PlateSide PlateTop PlateBottom PlateElectronic PlateLarge Access

4x A4WD3-FA-S4x A4WD3-FA-S-S

4x A4WD3-FA-S-Clear

6x A4WD3-H-G-6IN  
Small AccessAccess SurroundingTransparent AccessHatch Gasket  

60x SHS-1638x SHS-176x FHS-0210x AHS-22-BA6x SLN-05 
SHS M3 x 5mmSHS M3 x 10mmM5 x 16mmAluminum M3 x 10mm StandoffM5 Lock Nut 

4x A4WD3-OS-16x810ft ORING-2MM1x A4WD3-H-6IN20x ZIP-TIE-7IN2x VCS-09 
8mm Oil SealO-Ring MaterialMarine 6" HatchCable Ties 7"Velcro Strap 

Brushed DC MotorsHex Keys   
4x 36GP 540-51-EN1x HEX-2.5mm1x HEX-3mm   
12V Gear MotorHex Key 2.5mmHex Key 3mm   

Created by Eric Nantel on 2021/07/28 07:37
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