One pinion drives the axis (the "learn") although the next pinion is "preloaded" to eliminate the backlash (the "slave"). The preload is made electronically using a special motor controller; these units can also be build to generate collectively through cycle instances when backlash isn't crucial. A change in equipment ratios https://gearboxcvt74196.verybigblog.com/32008802/the-definitive-guide-to-gearbox-cvt