I have made a 4WD robot to carry a payload of 15kgs in total. The platform supports a 360 degree rig at a height of 160cm. The camera is stabilised with a mechanical gimbal.
Currently, the mechanism is run by 4 x 12v 300rpm Johnson motors and Cytron smart drive dual motor driver with RC controller.
The whole setup works fine except on two of the motors, the shafts are off-axis, which make 2 wheels wobble. Wheels used in this project are 120mm offroad wheels used in RC trucks. The main aim of the entire setup is to provide a smooth, steady and stable movement. All of the above are achieved except for the smooth bit due to the wobble of the wheels.
I want to swap all 4 motors but before doing so I'd like to check which motor would make sense to use here-
SQUARE GEAR BOX MOTOR - 300RPM
JOHNSON GEARED MOTOR - GRADE A QUALITY - 300RPM
After this issue I am also contemplating on attaching the wheel assembly to the motor shaft via a bearing and flexible coupling setup. Could someone advise me on which motor would be ideal and what drive system would be ideal to use here.
Thanks in advance.