Such gearboxes encompass huge central equipment identified as as sun, smaller gears rotating close to it known as as planets & this entire arrangement rotates inside a cylinder/ring identified as as ring gear OR annular gear. Electricity might be offered to any in the equipment & various volume of velocity https://automobile-gearbox75296.blue-blogs.com/41478334/the-smart-trick-of-automobile-gearbox-that-nobody-is-discussing