Mount spec questions: gear diameter, teeth...

[GTom]

When assessing a new mount purely based on specifications what do these values mean for practical usability:

R.A. Worm Gear 73.4mm Diameter, 144 Teeth vs: R.A. worm gear 180 teeth, 92.5mm diameter.

R.A. Worm Drive 11mm Diameter vs: R.A. wheel gear 15.8mm diameter

 

Rookie thinks the more teeth, the bigger diameter the better. Is that so? This case the manufacturer is the same, mounts: SA GTi and AL55i.

[PhilB61]

I think you are correct, if all else is equal then larger diameter with more teeth should theoretically be able to track more accurately. But then you need to consider any other factors such as differences in motor, reduction gearboxes or belt drive etc.