Subject: Re: [Fot] TR3 wheel offset

From: Roger Williams via Fot <[email-masked]>
Date: Mon, 10 May 2021 20:26:37 -0500

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There is this thing called scrub radius. When the factory engineers designed=
 your car they set it in a proper position. If you add spacers or get taller=
 tires or shorter tires or install the wrong rims you can make your car dang=
erously unstable at worst or at least make parts wear out and or break impor=
tant bits causing a crash. Making a racecar unstable is not a good idea. If y=
ou do not know where the scrub radius is on your front tires...maybe you sho=
uld. Attached is a simple look at what can get very complex and dangerous.
Cheers
Roger Williams

https://www.carthrottle.com/post/what-is-scrub-radius-and-why-is-it-importan=
t/

Sent from my iPad

> On May 10, 2021, at 6:30 PM, John Styduhar via Fot <[email-masked]> wr=
ote:
>=20
> =EF=BB=BF
> As a word of caution to you, running the stock rear axles and hubs is aski=
ng for trouble since they have been known to break with the added stress of r=
acing.   Upgrading to one-piece axle would be wise if you are getting seriou=
s.
>=20
>> On Mon, May 10, 2021 at 3:49 PM dustin nicholson via Fot <[email-masked].=
net> wrote:
>> Amici,
>>=20
>> What wheel width and offset are y=E2=80=99all running on a vintage legal t=
rack car?
>>=20
>> I=E2=80=99m looking at buying I set of vintage wheels that have practical=
ly zero offset. Attached are photos of my test fit that show the wheel sits i=
n more than seems right. I like the wheels but I=E2=80=99m not sure they=E2=80=
=99re what I need.
>>=20
>> On the front the outer rim is a couple of inches inboard from the fender l=
ip. On the rear the inner rim clears the leafspring by less than a half inch=
. You can see where the previous owner notched the leaf springs so the tire w=
on=E2=80=99t rub, so I suppose I can make these wheels work but I might be g=
iving up track width.=20
>>=20
>>=20
>>=20
>> Thanks,
>>=20
>> Dusty Nicholson _______________________________________________
>> [email-masked]
>>=20
>> http://www.fot-racing.com
>>=20
>> Donate: http://www.team.net/donate.html
>> Archive: http://autox.team.net/archive http://www.team.net/pipermail/fot
>> Unsubscribe/Manage: http://autox.team.net/mailman/options/fot/johnstydo@g=
mail.com
>>=20
>>=20
> _______________________________________________
> [email-masked]
>=20
> http://www.fot-racing.com
>=20
> Donate: http://www.team.net/donate.html
> Archive: http://autox.team.net/archive http://www.team.net/pipermail/fot
> Unsubscribe/Manage: http://autox.team.net/mailman/options/fot/coelacanth.r=
[email-masked]
>=20
>=20

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<html><head><meta http-equiv=3D"content-type" content=3D"text/html; charset=3D=
utf-8"></head><body dir=3D"auto">There is this thing called scrub radius. Wh=
en the factory engineers designed your car they set it in a proper position.=
 If you add spacers or get taller tires or shorter tires or install the wron=
g rims you can make your car dangerously unstable at worst or at least make p=
arts wear out and or break important bits causing a crash. Making a racecar u=
nstable is not a good idea. If you do not know where the scrub radius is on y=
our front tires...maybe you should. Attached is a simple look at what can ge=
t very complex and dangerous.<div>Cheers</div><div>Roger Williams<br><div><b=
r></div><div><a href=3D"https://www.carthrottle.com/post/what-is-scrub-radiu=
s-and-why-is-it-important/">https://www.carthrottle.com/post/what-is-scrub-r=
adius-and-why-is-it-important/</a><br><br><div dir=3D"ltr">Sent from my iPad=
</div><div dir=3D"ltr"><br><blockquote type=3D"cite">On May 10, 2021, at 6:3=
0 PM, John Styduhar via Fot &lt;[email-masked]&gt; wrote:<br><br></block=
quote></div><blockquote type=3D"cite"><div dir=3D"ltr">=EF=BB=BF<div dir=3D"=
ltr"><div class=3D"gmail_default" style=3D"font-size:small">As a word of cau=
tion to you, running the stock rear axles and hubs is asking for trouble sin=
ce they have been known&nbsp;to break with the added stress of racing.&nbsp;=
 &nbsp;Upgrading to one-piece axle would be wise if you are getting serious.=
</div></div><br><div class=3D"gmail_quote"><div dir=3D"ltr" class=3D"gmail_a=
ttr">On Mon, May 10, 2021 at 3:49 PM dustin nicholson via Fot &lt;<a href=3D=
"mailto:[email-masked]">[email-masked]</a>&gt; wrote:<br></div><bloc=
kquote class=3D"gmail_quote" style=3D"margin:0px 0px 0px 0.8ex;border-left:1=
px solid rgb(204,204,204);padding-left:1ex">Amici,<br>
<br>
What wheel width and offset are y=E2=80=99all running on a vintage legal tra=
ck car?<br>
<br>
I=E2=80=99m looking at buying I set of vintage wheels that have practically z=
ero offset. Attached are photos of my test fit that show the wheel sits in m=
ore than seems right. I like the wheels but I=E2=80=99m not sure they=E2=80=99=
re what I need.<br>
<br>
On the front the outer rim is a couple of inches inboard from the fender lip=
. On the rear the inner rim clears the leafspring by less than a half inch. Y=
ou can see where the previous owner notched the leaf springs so the tire won=
=E2=80=99t rub, so I suppose I can make these wheels work but I might be giv=
ing up track width. <br>
<br>
<br>
<br>
Thanks,<br>
<br>
Dusty Nicholson _______________________________________________<br>
<a href=3D"mailto:[email-masked]" target=3D"_blank">[email-masked]</=
a><br>
<br>
<a href=3D"http://www.fot-racing.com" rel=3D"noreferrer" target=3D"_blank">h=
ttp://www.fot-racing.com</a><br>
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t=3D"_blank">http://www.team.net/donate.html</a><br>
Archive: <a href=3D"http://autox.team.net/archive" rel=3D"noreferrer" target=
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/pipermail/fotUnsubscribe/Manage" rel=3D"noreferrer" target=3D"_blank">http:=
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/[email-masked]" rel=3D"noreferrer" target=3D"_blank">http://autox.team=
.net/mailman/options/fot/[email-masked]</a><br>
<br>
<br>
</blockquote></div>
<span>_______________________________________________</span><br><span>fot@au=
tox.team.net</span><br><span></span><br><span>http://www.fot-racing.com</spa=
n><br><span></span><br><span>Donate: http://www.team.net/donate.html</span><=
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ons/fot/[email-masked]</span><br><span></span><br><span></span>=
<br></div></blockquote></div></div></body></html>=

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_______________________________________________
[email-masked]

http://www.fot-racing.com

Archive: http://autox.team.net/archive http://www.team.net/pipermail/fot

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From: vfracing--- via Fot <[email-masked]>
Date: Tue, 11 May 2021 11:28:35 +0000 (UTC)

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Dusty:
Back when I first raced my TR4A (solid axle) I ran zero offset wheels (hub =
interface exactly centered in the wheel) plus one-inch spacers. =C2=A0I had=
 to notch the rear springs as shown in your picture because the slicks of t=
he day (1979-84) would move in and out by well over over an inch and rub th=
e springs. =C2=A0Now, running the same set up with 7 inch wheels (legal in =
HRG with whom I almost always run, John) and the Hoosier TDR 23 x 7.5 x 15 =
they never touch the stock-width springs. =C2=A0Note that the=C2=A0TR4A sol=
id axle springs are very similarly spaced from the hub as the TR3, not as f=
ar in as on the 4.
Phil Gott

-----Original Message-----
From: Roger Williams via Fot <[email-masked]>
To: John Styduhar <[email-masked]>
Cc: [email-masked]
Sent: Mon, May 10, 2021 9:27 pm
Subject: Re: [Fot] TR3 wheel offset

There is this thing called scrub radius. When the factory engineers designe=
d your car they set it in a proper position. If you add spacers or get tall=
er tires or shorter tires or install the wrong rims you can make your car d=
angerously unstable at worst or at least make parts wear out and or break i=
mportant bits causing a crash. Making a racecar unstable is not a good idea=
. If you do not know where the scrub radius is on your front tires...maybe =
you should. Attached is a simple look at what can get very complex and dang=
erous.CheersRoger Williams

https://www.carthrottle.com/post/what-is-scrub-radius-and-why-is-it-importa=
nt/

Sent from my iPad

On May 10, 2021, at 6:30 PM, John Styduhar via Fot <[email-masked]> wro=
te:

=EF=BB=BFAs a word of caution to you, running the stock rear axles and hubs=
 is asking for trouble since they have been known=C2=A0to break with the ad=
ded stress of racing.=C2=A0 =C2=A0Upgrading to one-piece axle would be wise=
 if you are getting serious.
On Mon, May 10, 2021 at 3:49 PM dustin nicholson via Fot <[email-masked]=
t> wrote:

Amici,

What wheel width and offset are y=E2=80=99all running on a vintage legal tr=
ack car?

I=E2=80=99m looking at buying I set of vintage wheels that have practically=
 zero offset. Attached are photos of my test fit that show the wheel sits i=
n more than seems right. I like the wheels but I=E2=80=99m not sure they=E2=
=80=99re what I need.

On the front the outer rim is a couple of inches inboard from the fender li=
p. On the rear the inner rim clears the leafspring by less than a half inch=
. You can see where the previous owner notched the leaf springs so the tire=
 won=E2=80=99t rub, so I suppose I can make these wheels work but I might b=
e giving up track width.=20

Thanks,

il.com

[email-masked]

com

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<div style=3D"font-size:10pt;font-family:arial,helvetica,sans-serif;color:b=
lack;"><div style=3D"font-family: arial,helvetica,sans-serif; font-size: 10=
pt; color: black;" data-mce-style=3D"font-family: arial,helvetica,sans-seri=
f; font-size: 10pt; color: black;">Dusty:</div><div style=3D"font-family: a=
rial,helvetica,sans-serif; font-size: 10pt; color: black;" data-mce-style=
=3D"font-family: arial,helvetica,sans-serif; font-size: 10pt; color: black;=
"><br></div><div style=3D"font-family: arial,helvetica,sans-serif; font-siz=
e: 10pt; color: black;" data-mce-style=3D"font-family: arial,helvetica,sans=
-serif; font-size: 10pt; color: black;">Back when I first raced my TR4A (so=
lid axle) I ran zero offset wheels (hub interface exactly centered in the w=
heel) plus one-inch spacers. &nbsp;I had to notch the rear springs as shown=
 in your picture because the slicks of the day (1979-84) would move in and =
out by well over over an inch and rub the springs. &nbsp;Now, running the s=
ame set up with 7 inch wheels (legal in HRG with whom I almost always run, =
John) and the Hoosier TDR 23 x 7.5 x 15 they never touch the stock-width sp=
rings. &nbsp;Note that the&nbsp;TR4A solid axle springs are very similarly =
spaced from the hub as the TR3, not as far in as on the 4.</div><div style=
=3D"font-family: arial,helvetica,sans-serif; font-size: 10pt; color: black;=
" data-mce-style=3D"font-family: arial,helvetica,sans-serif; font-size: 10p=
t; color: black;"><br></div><div style=3D"font-family: arial,helvetica,sans=
-serif; font-size: 10pt; color: black;" data-mce-style=3D"font-family: aria=
l,helvetica,sans-serif; font-size: 10pt; color: black;">Phil Gott<br><br><b=
r>-----Original Message-----<br>From: Roger Williams via Fot &lt;fot@autox.=
team.net&gt;<br>To: John Styduhar &lt;[email-masked]&gt;<br>Cc: fot@au=
tox.team.net<br>Sent: Mon, May 10, 2021 9:27 pm<br>Subject: Re: [Fot] TR3 w=
heel offset<br><br></div><div id=3D"yiv4403915945"><div>There is this thing=
 called scrub radius. When the factory engineers designed your car they set=
 it in a proper position. If you add spacers or get taller tires or shorter=
 tires or install the wrong rims you can make your car dangerously unstable=
 at worst or at least make parts wear out and or break important bits causi=
ng a crash. Making a racecar unstable is not a good idea. If you do not kno=
w where the scrub radius is on your front tires...maybe you should. Attache=
d is a simple look at what can get very complex and dangerous.<div>Cheers</=
div><div>Roger Williams<br clear=3D"none"><div><br clear=3D"none"></div><di=
v><a rel=3D"nofollow noopener noreferrer" shape=3D"rect" target=3D"_blank" =
href=3D"https://www.carthrottle.com/post/what-is-scrub-radius-and-why-is-it=
-important/">https://www.carthrottle.com/post/what-is-scrub-radius-and-why-=
is-it-important/</a><br clear=3D"none"><br clear=3D"none"><div dir=3D"ltr">=
Sent from my iPad</div><div dir=3D"ltr"><div class=3D"yiv4403915945yqt99567=
14646" id=3D"yiv4403915945yqtfd34443"><br clear=3D"none"><blockquote type=
=3D"cite">On May 10, 2021, at 6:30 PM, John Styduhar via Fot &lt;fot@autox.=
team.net&gt; wrote:<br clear=3D"none"><br clear=3D"none"></blockquote></div=
></div><blockquote type=3D"cite"><div dir=3D"ltr"><div class=3D"yiv44039159=
45yqt9956714646" id=3D"yiv4403915945yqtfd05460">=EF=BB=BF<div dir=3D"ltr"><=
div class=3D"yiv4403915945gmail_default" style=3D"font-size: small;" data-m=
ce-style=3D"font-size: small;">As a word of caution to you, running the sto=
ck rear axles and hubs is asking for trouble since they have been known&nbs=
p;to break with the added stress of racing.&nbsp; &nbsp;Upgrading to one-pi=
ece axle would be wise if you are getting serious.</div></div><br clear=3D"=
none"><div class=3D"yiv4403915945gmail_quote"><div class=3D"yiv4403915945gm=
ail_attr" dir=3D"ltr">On Mon, May 10, 2021 at 3:49 PM dustin nicholson via =
Fot &lt;<a rel=3D"nofollow noopener noreferrer" shape=3D"rect" ymailto=3D"m=
ailto:[email-masked]" target=3D"_blank" href=3D"mailto:[email-masked]=
et">[email-masked]</a>&gt; wrote:<br clear=3D"none"></div><blockquote c=
lass=3D"yiv4403915945gmail_quote" style=3D"margin: 0px 0px 0px 0.8ex; borde=
r-left: 1px solid #cccccc; padding-left: 1ex;" data-mce-style=3D"margin: 0p=
x 0px 0px 0.8ex; border-left: 1px solid #cccccc; padding-left: 1ex;">Amici,=
<br clear=3D"none">
<br clear=3D"none">
What wheel width and offset are y=E2=80=99all running on a vintage legal tr=
ack car?<br clear=3D"none">
<br clear=3D"none">
I=E2=80=99m looking at buying I set of vintage wheels that have practically=
 zero offset. Attached are photos of my test fit that show the wheel sits i=
n more than seems right. I like the wheels but I=E2=80=99m not sure they=E2=
=80=99re what I need.<br clear=3D"none">
<br clear=3D"none">
On the front the outer rim is a couple of inches inboard from the fender li=
p. On the rear the inner rim clears the leafspring by less than a half inch=
. You can see where the previous owner notched the leaf springs so the tire=
 won=E2=80=99t rub, so I suppose I can make these wheels work but I might b=
e giving up track width. <br clear=3D"none">
<br clear=3D"none">
<br clear=3D"none">
<br clear=3D"none">
Thanks,<br clear=3D"none">
<br clear=3D"none">
Dusty Nicholson _______________________________________________<br clear=3D=
"none">
<a rel=3D"nofollow noopener noreferrer" shape=3D"rect" ymailto=3D"mailto:fo=
[email-masked]" target=3D"_blank" href=3D"mailto:[email-masked]">fot@=
autox.team.net</a><br clear=3D"none">
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ef=3D"http://www.fot-racing.com/">http://www.fot-racing.com</a><br clear=3D=
"none">
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lank" href=3D"http://www.team.net/donate.html">http://www.team.net/donate.h=
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<br clear=3D"none">
</blockquote></div>
<span>_______________________________________________</span><br clear=3D"no=
ne"><span>[email-masked]</span><br clear=3D"none"><span></span><br clea=
r=3D"none"><span>http://www.fot-racing.com</span><br clear=3D"none"><span><=
/span><br clear=3D"none"><span>Donate: http://www.team.net/donate.html</spa=
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1600"><br clear=3D"none"><span></span><br clear=3D"none"><span></span><br c=
lear=3D"none"></div></div></blockquote></div></div></div></div><div class=
=3D"yqt9956714646" id=3D"yqtfd72251">______________________________________=
_________<br clear=3D"none"><a shape=3D"rect" ymailto=3D"mailto:[email-masked]=
eam.net" href=3D"mailto:[email-masked]">[email-masked]</a><br clear=
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g.com/" target=3D"_blank">http://www.fot-racing.com</a><br clear=3D"none"><=
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