Best Viewed "Full-screen" with resolution of 1024x768 or better

Angle Units:
'D' - Transfer Case Angle Compliment:
(90 - Xfer Angle)

'E' - Transfer Case Angle (readonly)
Driveshaft Length:
'C' - Level Height Difference between
Rear Pinion and Transfer Case
Output Shafts:
'E' - Rear Pinion Angle:
'B' - Distance between
Transfer Case and
Rear Pinion:
'A' - Angle:

Driveshaft Angle Estimator


Enter values three of the variables (lengths, height, or angles) of the triangle and the other three values will be computed. The number of significant values entered will determine the number of significant figures in the results. This calculator assumes that the pinion and output yokes are parallel.

Example-1: If center of pinion shaft is 5.00" below the center of the transfer case's rear output shaft ('C') and the length of the Drive shaft is 19" and the pinion yoke and rear output yoke are parallel (forming a 90-degree angle at 'A') then the pinion angle is estimated to be 15.3-Degrees.

Example-2: If you measure the pinion/transfer case height ofset ('C') to be 6.0" and the distance between them ('B') to be 17.75" assuming 'A' is a 90-degree angle because the shafts are parallel then the pinion angle will be found to be about 19-degrees.

This application, based on the original "Triangle Calculator" - written by Stephen Ostermiller, is EXPERIMENTAL. It may be useful in visualizing how changes such as indexing the transfer case to reduce the pinion to transfer case height offset, may affect pinion angles. You can and should plug the values estimated back into a "real" vehicle to verify the closeness and suitability for your purposes.

Please direct comments, questions, suggestions, discoveries or other items to: rdf at rdfoerster dot com


This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version.  This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.

Driveshaft Angle Extimator Application by RDFoerster Software, Sept 10, 2010

More converters, calculators, and other JavaScript goodies at: (site index) Copyright Stephen Ostermiller 2001-2006

dBase, Delphi  and C++ Builder  are trademarks of Borland International, Inc. All other products mentioned are registered trademarks or trademarks of their respective companies.

Questions or problems regarding this web site should be directed to
Copyright 1997-2007 RDFoerster Software. All rights reserved.
Last modified: Sunday September 12, 2010

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