Hi all! Have been working on my first antweight robot recently using the antweight kit from the store here. Have had a couple of different versions so far but the two designs both had control issues, specifically being quite hard to drive in a straight line, with it being worse at low speeds.
After checking fitment and redesigning I had eliminated any rubbing/wheel contact with the case, but still I suffered with the same control issue.
This is when I removed the motors and found that when very light throttle is applied, one wheel starts turning before the other, and at higher throttle it does sort of sound like they are spinning at different speeds. But.. when reversing at very low speeds, the other motor seems to be the one turning first - which to me, eliminates motor manufacturing differences.