The protection of the brushless motor controller performance is good, strong adaptability to the environment, so in order to make everyone more save time, when using the following to introduce the knowledge of gear ratio under the device: 1, the brushless motor controller in machine of decelerate of hard tooth flank a external gear, it work for you to reverse running, small gear rotating to the right, turn the wheel to left; 2, in an internal gear, two gear running in the same direction; 3, in a pair of gears, gear gear pinion, less teeth gear is called big gear, more equal number of cases, the drive gear pinion, driven gear wheel; 4, brushless motor controller in a pair of machine of decelerate of hard tooth flank gear running number and inversely proportional to number of pinion revolution more than big gear, the gear ratio, speed reducer gear ratio is different. More than with the introduction of the brushless motor controller first come here, if you have our equipment requirements, welcome to contact our company, we will with perfect service, meet your requirements.