These gearboxes consist of large central equipment named as Sunshine, smaller sized gears rotating all-around it termed as planets & this total arrangement rotates inside a cylinder/ring termed as ring gear OR annular equipment. Electricity is usually provided to any of the gear & distinct number of velocity and torque https://spencerzffed.blogacep.com/39406544/automobile-gearbox-things-to-know-before-you-buy