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Follow up Question -Front Wheel Alignment

To: "Healey List" <healeys@autox.team.net>
Subject: Follow up Question -Front Wheel Alignment
From: "John Soderling" <jsoderling@astound.net>
Date: Wed, 20 Apr 2005 19:48:05 -0700
A follow up question: To decrease the toe-in, which direction do I turn the
center tie-rod cross-tube?  Looking front the front of the car, do I turn the
tube up or down?
Thanks.
Vrooom vrooom,
John

----- Original Message -----
From: John Soderling
To: Healey List
Sent: Wednesday, April 20, 2005 7:29 PM
Subject: Manual Front Wheel Alignment Question


I have a question regarding wheel alignment specs.

Today I did a manual check of my Healey's front wheel alignment in my garage.
The wheels/steering were pointing straight forward.  My tires tread has a
center grove.  Here is the procedure I used.
  1.. Using a plumb-bob hung from the tire tread center grove, I marked points
on the garage floor at the front and rear centers of both front tires.  The
distance between the front and rear-of-tire measurements was 25.3", my tire
diameter.
  2.. I then measured the distance between the front-of-tire points (front
distance) and the rear-of-tire points (rear distance).
  3.. I then subtracted the front distance from the rear distance which turned
out to be 5/16".
  4.. I repeated steps 1. through 3. after rolling the car about 1/2 the tire
circumference forward to average any tire/wheel untrueness.  The difference
was again 5/16".
  5.. I also similarly measured distances at the front and rear points of the
wire wheel  rim edges and calculated the difference, which turned out to a
toe-in of 3/16".  The distance between the front and rear wheel rim edge
points was 16" (as contrast 25.3" distance for the 5/16" toe-in measurement).
So my question is:  when the Workshop Manual says the toe-in should be 1/16",
what is the distance they use between the front and rear measured points?
Tire diameter?  Wheel diameter?  Other?

Thanks for any help.

Vrooom vrooom,
John
100-Six  Erika the Red




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