So I have been looking into efficiency, My system is high radius with the motor located outside. This motor is small, and thus the gear being driven by the motor, is also small for space requirements. I have wanted to use a ratio of about 22:1 to make this system, and everything seems to work fine, however it seems to be inefficient to use gear ratios of spur-gears above 1:6 according to some sources http://www.meadinfo.org/2008/11/gear-efficiency-spur-helical-bevel-worm.html http://www.roymech.co.uk/Useful_Tables/Drive/Gear_Efficiency.html But according to other sources, a rack and pinion drive is about 97% efficiency. While at the same time, a rack and pinion can be seen as a spur gear with infinite ratio. 1:infinite, efficiency is 97% while 1:22, efficiency is bad as far as I understand. Why is this? And what should I do, should I continue using small teeth and a 1:22 spur gears, or should I replace my small drive gear with something 2 times bigger, to create a ratio of f.ex 2:11, and then another 1:2 gear, this obviously weight much more, and I want to avoid having to do this.