Re: Quattro in gear textbook

["Gerry Snow" <gsnow@iea.com>]

Well that's pretty cool!  I am a mechanical engineer, and used a much
earlier edition of Shigley's book.  (Let's see, my version is old enough
that maybe there is a discussion of the revolutionary Auto Union 16 cylinder
Grand Prix car!)  I knew I was studying hard for something.  Now I can
appreciate my q even more.

Best Regards,

Gerry

****************************************************
Gerry C. Snow
Pacific Energy Research Associates, Inc.
Spokane, Washington, USA
Voice:  +509 624 4390
Fax:      +509 624 3433
E-Mail: gsnow@iea.com
             pera@sprynet.com
****************************************************
-----Original Message-----
From: Wallace White <wallace@remdesign.com>
To: Quattro List <quattro@audifans.com>
Date: Wednesday, October 06, 1999 5:56 PM
Subject: Quattro in gear textbook


>As I was reading up on gear design in Shigley & Mischke's _Mechanical
>Engineering Design_, Fifth Edition, I came across Problem 13-18,
>concerning an automobile with three differentials. The figure, showing
>the ur-q drivetrain, has the caption, "The Audi 'Quattro concept,'
>showing the three differentials which provide permanent all-wheel drive.
>(By Permission, Audi of America, Inc., Troy, Michigan.)"
>
>The text explains the system of three differentials and then asks:
>
>(a) Explain why this concept may allow greater acceleration.
>
>(b) Suppose either the center or the rear differential, or both, can be
>locked for certain road conditions. Would either or both of these
>actions provide greater traction? Why?
>
>(c) Suppose the center differential were of a torque-sensing
>arrangement... [Just kidding!]
>
>- Wallace
>  '87 5kcstq 160k