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Re: Alignment

To: british-cars%encore.com@munnari.OZ.AU
Subject: Re: Alignment
From: s883351@minyos.xx.rmit.OZ.AU (John Taylor [The Banshee])
Date: Sat, 9 Feb 91 11:29:11 +1100
Thanks Akkana for the easy method - never thought of using trig. techniques.

>She suggested sticking pins in the tires at some arbitrary height in the
>tires.  (No, of *course* you don't want to stick pins all the way into
>the tread.  That might let the air out, much akin to letting the smoke
>out of your electrical system.  So I'm not going to talk about that.)

Of course, you could always use chalk, liquid-paper, etc. to put a spot on
the tyre tread - no problems if you forget to remove the pins...

>Toe-in is supposed to be the difference between the front and rear of
>the tires (tyres), measured at the axle center (centre).  Let us assume
>zero camber (cambre), meaning the axle is exactly horizontal (an admittedly
>weak assumption, but not a problem for our purposes).
>
>      .                     .
>      .A ------- O ------- B.
>      |.                   .|
>      |  .C             D.  |
>      |     .    E    .     |
>      |         ...         |
>      -----------------------
>      <---------d----------->
>

This should not be a problem, it's fairly easy to "eye-ball" a horizontal line
across the centre (center for US readers...) of the wheel, and mark your tyre
(tire) appropriately.  You could use a spirit level if you wanted to be EXACT,
but the errors of doing it by eye are pretty small.

>...  So it is best if you work as close as possible to axle height.

If you were working on a level surface, and used a spirit level across the
hub centre (center), wouldn't this give you the correct height and position?


+----------------------------------------------------------------------------+
|   John Taylor  [The Banshee]         Victoria University of Technology     |
|  s883351@minyos.xx.rmit.oz.au    (Royal Melbourne Institute of Technology) |
|   MOKING IS A HEALTH HAZARD.          Melbourne, Victoria, AUSTRALIA       |
+----------------------------------------------------------------------------+


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