Dell XPS 13 Ultrabook Review. Dell's XPS 13 Ultrabook starts at $999. So you have a MacBook Air, a man sitting next to me on a flight from New York to San Francisco says to me as he gestures at the laptop stuffed in my seat pocket.
In rear-wheel drive automobiles the central drive shaft (or prop shaft) engages the differential through a hypoid gear(ring and pinion). The ring gear is mounted on the carrier of the planetary chain that forms the differential. This hypoid gear is a bevel gear that changes the direction of the drive rotation.
The ring gear number and the first number on the pinion gear identify the gears as a matched set. The second number, on the face of the pinion, indicates the pinion position in relation to the centerline of the axle shafts where the tooth contact was best and the operation the quietest.'m just putting new seals and bearings in. On the pinion and ring gear there are numbers. I know there's a number on there somewhere that gives a reference to factory shim thickness. Here's some pictures if they will help.