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Re: [Tigers] Front suspension

To: tigers@autox.team.net
Subject: Re: [Tigers] Front suspension
From: Tom Hall <modtiger@comcast.net>
Date: Fri, 1 Oct 2021 12:34:43 -0700
Delivered-to: mharc@autox.team.net
Delivered-to: tigers@autox.team.net
References: <CACQC2nWdwBhLzzfu7LT8LisQv--5pgQnWWtgZET1A35Eh4EnaA@mail.gmail.com> <830812442.1004153.1633054404982@connect.xfinity.com> <CACQC2nWqdyxbpsJfZydbYAoqLunsbYiY+zCKRM6=27xY8fn_cQ@mail.gmail.com> <494261672.1023398.1633099282074@connect.xfinity.com> <1408585327.599277.1633103675054@mail.yahoo.com> <1394424770.65617.1633105421591@connect.xfinity.com> <1577997350.604633.1633106227483@mail.yahoo.com> <043c01d7b6e8$dddc28e0$99947aa0$@island.net>
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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>
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        <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> </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> </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:&quot;Segoe UI Symbol&quot;,sans-serif"
            lang="EN-CA"><o:p></o:p></span></p>
        <p class="MsoNormal"><span lang="EN-CA"><o:p> </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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