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On 10/1/2021 10:22 AM, jim via Tigers wrote:
>
> Iâ??m definitely a layman but like to tweak things !!!
>
> My car has the 1976 suspension tuning added holes to fully relocate
> the upper A-arms and Iâ??ve kept that setup. Other than minimal shimming
> for castor the camber will NOT go to zero ( or positive) and I have
> about 1 degree negative â?¦ I have a unique brake setup with 11â?? Porsche
> rotors on adapters and Wilwood Dynalite  calipers behind 14â?? 3 piece
> wheels. I changed the steering arms to the MGB one when I installed
> the Mazda power steering. The mounting holes for the MGB arms are
> parallel  so require a spacer to mount them in stock location. I saw a
> potential ( because my Wilwood brake mount ) to move the steering arm
> outboard but that would also require the caliper and rotor to move the
> same amount. I managed to move it all outboard ¼â?? and with the slight
> offset of the MGB arm, itâ??s almost ½â?? gain in reality. I bolted the
> wheels back on and it â??seemedâ?? to spin freely so I took it for a drive
> and heard a slight â??tickingâ?? in the wheels. It turned out that both
> wheels had a couple of stick on wheel weights on the inside and the
> calipers were just grazing the as they are about 1/8â?? thick. A couple
> minutes with the grinder shaved off enough and its never been a
> problem since! I did the math back then and canâ??t remember exactly
> but it certainly ( on paper ) improved the ackerman
>
> Maybe I shouldnâ??t have cancelled my â??hokansonâ?? front end order years
> ago but what would I do with my free time ?? lol!
>
> Jim
>
> B382000446
>
Guy's, It's been a long long time (early 70's) since I wrote that STOA
Tech Tip on upper A-arm relocation. I haven't used it years because the
switch to radial tires pretty much eclipsed the advantage it showed when
running bias ply tires. Bill Martin has been developing a stock based
front suspension relocation of the disc and rotors outward (to give room
to bent the steering arms outward) to aid in the reduction of the
Ackerman problem, but it requires much more sophistication and new
hardware. Doane's solution was good on the track but lacking strength
and durability for street application.
--
Tom Hall
ModTiger Engineering LLC
5712 San Luis Court
Pleasanton, CA 94566
(925)462-3876
modtiger@comcast.net
http://tigerengineering.net/
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<div class="moz-cite-prefix">On 10/1/2021 10:22 AM, jim via Tigers
wrote:<br>
</div>
<blockquote type="cite"
cite="mid:043c01d7b6e8$dddc28e0$99947aa0$@island.net">
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<div class="WordSection1">
<p class="MsoNormal"><span lang="EN-CA">Iâ??m definitely a layman
but like to tweak things !!!<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-CA"><o:p>Â </o:p></span></p>
<p class="MsoNormal"><span lang="EN-CA">My car has the 1976
suspension tuning added holes to fully relocate the upper
A-arms and Iâ??ve kept that setup. Other than minimal shimming
for castor the camber will NOT go to zero ( or positive) and
I have about 1 degree negative â?¦ I have a unique brake setup
with 11â?? Porsche rotors on adapters and Wilwood Dynalite
 calipers behind 14â?? 3 piece wheels. I changed the steering
arms to the MGB one when I installed the Mazda power
steering. The mounting holes for the MGB arms are parallel
 so require a spacer to mount them in stock location. I saw
a potential ( because my Wilwood brake mount ) to move the
steering arm outboard but that would also require the
caliper and rotor to move the same amount. I managed to move
it all outboard ¼â?? and with the slight offset of the MGB
arm, itâ??s almost ½â?? gain in reality. I bolted the wheels
back on and it â??seemedâ?? to spin freely so I took it for a
drive and heard a slight â??tickingâ?? in the wheels. It turned
out that both wheels had a couple of stick on wheel weights
on the inside and the calipers were just grazing the as they
are about 1/8â?? thick. A couple minutes with the grinder
shaved off enough and its never been a problem since! I did
the math back then and canâ??t remember exactly but it
certainly ( on paper ) improved the ackerman<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-CA">Maybe I shouldnâ??t have
cancelled my â??hokansonâ?? front end order years ago but what
would I do with my free time ?? lol!<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-CA"><o:p>Â </o:p></span></p>
<p class="MsoNormal"><span lang="EN-CA">Jim<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-CA">B382000446</span><span
style="font-family:"Segoe UI Symbol",sans-serif"
lang="EN-CA"><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-CA"><o:p>Â </o:p></span></p>
</div>
</blockquote>
Guy's, It's been a long long time (early 70's) since I wrote that
STOA Tech Tip on upper A-arm relocation. I haven't used it years
because the switch to radial tires pretty much eclipsed the
advantage it showed when running bias ply tires. Bill Martin has
been developing a stock based front suspension relocation of the
disc and rotors outward (to give room to bent the steering arms
outward) to aid in the reduction of the Ackerman problem, but it
requires much more sophistication and new hardware. Doane's
solution was good on the track but lacking strength and durability
for street application.<br>
<pre class="moz-signature" cols="72">--
Tom Hall
ModTiger Engineering LLC
5712 San Luis Court
Pleasanton, CA 94566
(925)462-3876
<a class="moz-txt-link-abbreviated"
href="mailto:modtiger@comcast.net";>modtiger@comcast.net</a>
<a class="moz-txt-link-freetext"
href="http://tigerengineering.net/";>http://tigerengineering.net/</a> </pre>
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