VEX V5 SmartDrive 6 motors run error distance, is the ratio wrong?

VEX V5 Technical Support
1
  1. Parameter
  • 3 motors one side, total 2 groups, total 6 motors for drive;
  • motor gear ratio: 6:1, 11W
  • gear ratio: 36T (motor output axis): 48T(wheel side)
  1. Smartdrive para
  • Wheel travel: 21.945 (2.75 inch wheel)
  • trackWidth: 300mm
  • wheel base: 255mm, from 1st motor center to 3rd motor center
  • externalGearRatio: 48:36, 4/3

Problem:
When using Smartdrive. Drivefor(100, mm), it runs to 820mm.
Where we can find the wrong place?

1 Like
2

Is wheel travel in mm? if so I think it should be 219.44mm not 21.945mm. You can try switching the gear ratio to 3/4 in the code too to see if that works. Also make sure the motors are set to the right gear cartridge when you make them.