Driveline Rotational Speed Calculation
WARNING: This page does not describe the selected car, but rather 58 other vehicles, including the 2003 Saturn Vue, 2003 Saturn L300, 2003 Saturn Ion 3, 2003 Saturn Ion 2, and 2003 Saturn Ion 1. However, it is still accessible from the selected car via links, so may be relevant.
- Determine the first order rotational speed of the driveline/transmission output shaft/rear axle pinion gear, in revolutions per second (Hz), based on the first-order rotational speed of the tire/wheel assemblies and the drive axle ratio. 13 Hz X 3.42 drive axle ratio = 44.46 Hz, rounded to 44 Hz first-order driveline rotation related.
- Compare the rotational speed of the driveline/transmission output shaft/rear axle pinion gear, at the specific vehicle speed at which the disturbance occurs, to the dominant frequency recorded on the Electronic Vibration Analyzer (EVA) 2 during testing. If the frequencies match, then a first-order disturbance related to the rotation of the driveline/transmission output shaft/rear axle pinion gear, is present.