Originally Posted by @Art_Mighty
Who manufactures the lightest pinion and spur gears?
Why do want lightest?
Not sure motor can tell the difference really?
Of course something lighter will slow down and start faster in linear time based physics
So I think in short courses with 180's these lighter components will work more efficient regarding batteries
Power band will also play a part in lighter gearing
So many variables but I think lighter cars like 12th will only feel a difference and barely as I've never noticed and I've raced with both light and heavy gears
Just a opinion