First of all, I am a newly registered user, so thanks for any help guys. I am confused with the concept of planetary gears. Lets say there is an rpm applied to a planetary gear of 600 rpm and the gear ratio is 3:1. So the output of the planetary gear then spins 1800 rpm (600 * 3). Now my question is a bit confusing, since there is a higher gear ratio the output will be spinning faster, thus generating more torque. However the planetary gear has mechanical advantage, since the outer gears(planets) are 3 times the size of the inner gear(sun). So do they essentially cancel out? If this isn't clear please let me know. Thanks guys.