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Hi All - I wasn't going to jump in on this one, but I just wanted to chime=
in on a couple of notes. The two things that the bolt-in-place of the stoc=
k shock units (not all!) seem to lack is: 1. the lower bump stop (the upper=
stop is that squarish thing in the wheel well, so no need to duplicate tha=
t) and 2. the ability to compensate for the arc of motion of the trailing a=
rm. 1 is easy to deal with, but you need to be careful that you don't wind =
up with sudden loss of motion else the car will handle in an evil manner at=
the limits. 2 is also easy to deal with provided you use a compliant mount=
(upper and lower) to allow the shock mount to sort of swivel. If you go to=
o stiff on the mounts, the energy has to transfer somewhere, hence the brok=
en frame mounts and/or cracks.
The shock that mounts through the stock spring location, more or less like =
a coil-over is okay but you are limited to how big of a shock you can fit i=
n there and that limits how effective the system will be. The main problem =
there is that the center line of the spring intersects with the wheel so ba=
sically it's "little shocks" or nothing. For hard driving applications, the=
result would be degredation of damping as the oil in the shock heat up (an=
d then foams or whatever). In a street car, you probably would never see th=
is except in the worst roads over a long period.
Regarding the advantages of the lever shock - most importantly, lever shock=
s add the least amount of unsprung mass to the suspension. Depending on how=
you mount your tube shock, you might be adding unsprung weight and that's =
going to effect handling.
All that said, for tuning suspension, the shocks are the last final fine tu=
ning, not the beginning of a handling tune. Keep that in mind.
FWIW, I run modified levers for my race car. They work great. They don't gi=
ve the same amount of adjustability that a modern coil-over might provide, =
but for the way I use the car, they work great. So, plus one for World-Wide=
from this owner. Do think about the upgrade to the adjustable option - it =
is worth the extra money. These are sometimes referred to as Armstrong 22's=
which is a throwback reference to what was offered back in the day.
Regards,Bob Lang
On Tuesday, May 12, 2020, 8:54:13 AM EDT, Stan Foster via 6pack <6pack@=
autox.team.net> wrote: =20
=20
=20
I do around 1200 miles a year in the TR6. It was a bumpy dirt road that fin=
ally broke the mount and I would say the welds holding the crossmember to t=
he frame were pretty iffy to start with and I had never once checked to see=
if any were starting to crack. I bet if I had I would have spotted this st=
arting to fail and fix it without a ratco replacement crossmember.
=20
=C2=A0
=20
Stan
=20
=C2=A0
=20
From: Greg Lemon <grglmn@gmail.com>=20
Sent: Tuesday, May 12, 2020 12:55 AM
To: Stan Foster <stan@redtr6.com>
Cc: 6pack <6pack@autox.team.net>
Subject: Re: [6pack] Rear tube shock conversion
=20
=C2=A0
=20
Stan,=C2=A0
=20
=C2=A0
=20
Curious, how many miles and how did you use the car in 10 years?=C2=A0 I am=
sitting at about 10 years and maybe 12,000 miles on mine.
=20
=C2=A0
=20
Thanks, Greg
_______________________________________________
Archive: http://www.team.net/archive
6pack@autox.team.net
http://autox.team.net/mailman/listinfo/6pack
r6@yahoo.com
=20
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<html><head></head><body><div class=3D"ydp6d735704yahoo-style-wrap" style=
=3D"font-family:Helvetica Neue, Helvetica, Arial, sans-serif;font-size:13px=
;"><div></div>
<div dir=3D"ltr" data-setdir=3D"false">Hi All - I wasn't going to j=
ump in on this one, but I just wanted to chime in on a couple of notes. The=
two things that the bolt-in-place of the stock shock units (not all!) seem=
to lack is: 1. the lower bump stop (the upper stop is that squarish thing =
in the wheel well, so no need to duplicate that) and 2. the ability to comp=
ensate for the arc of motion of the trailing arm. 1 is easy to deal with, b=
ut you need to be careful that you don't wind up with sudden loss of motion=
else the car will handle in an evil manner at the limits. 2 is also easy t=
o deal with provided you use a compliant mount (upper and lower) to allow t=
he shock mount to sort of swivel. If you go too stiff on the mounts, the en=
ergy has to transfer somewhere, hence the broken frame mounts and/or cracks=
.</div><div dir=3D"ltr" data-setdir=3D"false"><br></div><div dir=3D"ltr" da=
ta-setdir=3D"false">The shock that mounts through the stock spring location=
, more or less like a coil-over is okay but you are limited to how big of a=
shock you can fit in there and that limits how effective the system will b=
e. The main problem there is that the center line of the spring intersects =
with the wheel so basically it's "little shocks" or nothing. For hard drivi=
ng applications, the result would be degredation of damping as the oil in t=
he shock heat up (and then foams or whatever). In a street car, you probabl=
y would never see this except in the worst roads over a long period.</div><=
div dir=3D"ltr" data-setdir=3D"false"><br></div><div dir=3D"ltr" data-setdi=
r=3D"false">Regarding the advantages of the lever shock - most importantly,=
lever shocks add the least amount of unsprung mass to the suspension. Depe=
nding on how you mount your tube shock, you might be adding unsprung weight=
and that's going to effect handling.</div><div dir=3D"ltr" data-setdir=3D"=
false"><br></div><div dir=3D"ltr" data-setdir=3D"false">All that said, for =
tuning suspension, the shocks are the last final fine tuning, not the begin=
ning of a handling tune. Keep that in mind.</div><div dir=3D"ltr" data-setd=
ir=3D"false"><br></div><div dir=3D"ltr" data-setdir=3D"false">FWIW, I run m=
odified levers for my race car. They work great. They don't give the same a=
mount of adjustability that a modern coil-over might provide, but for the w=
ay I use the car, they work great. So, plus one for World-Wide from this ow=
ner. Do think about the upgrade to the adjustable option - it is worth the =
extra money. These are sometimes referred to as Armstrong 22's which is a t=
hrowback reference to what was offered back in the day.<br></div><div dir=
=3D"ltr" data-setdir=3D"false"><br></div><div dir=3D"ltr" data-setdir=3D"fa=
lse">Regards,</div><div dir=3D"ltr" data-setdir=3D"false">Bob Lang<br></div=
><div><br></div>
=20
</div><div id=3D"ydpe22b866dyahoo_quoted_9848277494" class=3D"ydpe2=
2b866dyahoo_quoted">
<div style=3D"font-family:'Helvetica Neue', Helvetica, Arial, s=
ans-serif;font-size:13px;color:#26282a;">
=20
<div>
On Tuesday, May 12, 2020, 8:54:13 AM EDT, Stan Foster v=
ia 6pack <6pack@autox.team.net> wrote:
</div>
<div><br></div>
<div><br></div>
<div><div id=3D"ydpe22b866dyiv5210037618"><div>
<div class=3D"ydpe22b866dyiv5210037618WordSection1">
<p class=3D"ydpe22b866dyiv5210037618MsoNormal">I do around 1200 miles a yea=
r in the TR6. It was a bumpy dirt road that finally broke the mount and I w=
ould say the welds holding the crossmember to the frame were pretty iffy to=
start with and I had never once checked to see if any were
starting to crack. I bet if I had I would have spotted this starting to fa=
il and fix it without a ratco replacement crossmember.</p>=20
<p class=3D"ydpe22b866dyiv5210037618MsoNormal"> </p>=20
<p class=3D"ydpe22b866dyiv5210037618MsoNormal">Stan</p>=20
<p class=3D"ydpe22b866dyiv5210037618MsoNormal"> </p>=20
<div class=3D"ydpe22b866dyiv5210037618yqt4416234183" id=3D"ydpe22b866dyiv52=
10037618yqt02143"><div style=3D"border-color: rgb(225, 225, 225) currentcol=
or currentcolor; border-style: solid none none; border-width: 1pt medium me=
dium; padding: 3pt 0in 0in;">
<p class=3D"ydpe22b866dyiv5210037618MsoNormal"><b>From:</b> Greg Lemon <=
grglmn@gmail.com> <br clear=3D"none">
<b>Sent:</b> Tuesday, May 12, 2020 12:55 AM<br clear=3D"none">
<b>To:</b> Stan Foster <stan@redtr6.com><br clear=3D"none">
<b>Cc:</b> 6pack <6pack@autox.team.net><br clear=3D"none">
<b>Subject:</b> Re: [6pack] Rear tube shock conversion</p>=20
</div>
<p class=3D"ydpe22b866dyiv5210037618MsoNormal"> </p>=20
<div>
<div>
<div>
<blockquote style=3D"border-color: currentcolor currentcolor currentcolor r=
gb(204, 204, 204); border-style: none none none solid; border-width: medium=
medium medium 1pt; padding: 0in 0in 0in 6pt; margin-left: 4.8pt; margin-ri=
ght: 0in;">
<p class=3D"ydpe22b866dyiv5210037618MsoNormal">Stan, </p>=20
</blockquote>
</div>
</div>
<div>
<p class=3D"ydpe22b866dyiv5210037618MsoNormal"> </p>=20
</div>
<div>
<p class=3D"ydpe22b866dyiv5210037618MsoNormal">Curious, how many miles and =
how did you use the car in 10 years? I am sitting at about 10 years a=
nd maybe 12,000 miles on mine.</p>=20
</div>
<div>
<p class=3D"ydpe22b866dyiv5210037618MsoNormal"> </p>=20
</div>
<div>
<p class=3D"ydpe22b866dyiv5210037618MsoNormal">Thanks, Greg</p>=20
</div>
</div></div>
</div>
</div></div><div class=3D"ydpe22b866dyqt4416234183" id=3D"ydpe22b866dyqt860=
84">_______________________________________________<br clear=3D"none">Suppo=
rt Team.Net <a shape=3D"rect" href=3D"http://www.team.net/donate.html"; rel=
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r=3D"none">Suggested annual donation $12.96<br clear=3D"none">Archive=
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_______________________________________________
Archive: http://www.team.net/archive
6pack@autox.team.net
http://autox.team.net/mailman/listinfo/6pack
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