Mark,
Toe In is traditional on most street cars. It helps straight line tracking.
(But so does Caster, but Caster probably does a better job.)
Toe Out is an accommodation to compensate for the Tiger's anti-ackerman
steering. It also helps "turn-in" when Autocrossing.
Towing out when steering is what Ackerman does. Changing to this amount of
toe out delays the onset of Anti-Ackerman a bit and since the worst of the
Anti-Ackerman is at the extreme (near full lock) of steering, the change
eliminates the anti-ackerman problem for much of the steering range. I did
the calcs many years ago but I seem to remember this change toes out about a
degree. (The Tiger's anti-Ackerman is about 3-4 degrees at full lock).
I was fearful to try toe out at first because I was leery about loosing
tracking stability and then I remembered that every NASCAR roaring around
the high banks at over 190MPH runs front Toe out. I saw some race Tigers
demonstrate this setting at 150 to 160MPH on the banks at California
Speedway with no problems so I tried it. Works fine when coupled with the
Caster settings described in the earlier post which help straight line
tracking. (However you'll end up with a"Twitchy" Tiger if you both Toe Out
and reduce Caster far below the factory "specs". e.g. Caster from almost 4
degrees down to 2 degrees.)
We've always run 1/8" Tow out in our race Tiger. (And those races average
almost 80 MPH.)
Buck Trippel
----- Original Message -----
From: "Smit, Theo" <Theo.Smit@dynastream.com>
To: <CoolVT@aol.com>; <tigers@autox.team.net>
Sent: Wednesday, September 01, 2010 11:03 AM
Subject: Re: [Tigers] Tiger Handling
> Toe out avoids, to some extent, the low-speed scrub you will get due to
> the
> non-Ackerman geometry in the Tiger's steering. Additionally it will make
> your
> turn-in more positive. It can make your braking a little bit more darty
> than
> it would be with toe-in, though.
>
> Years ago one of the local racers bought one of the ex-Rocketsports Olds
> Cutlass GT-1 cars. He told me that according to the book, the fast setup
> on
> that car had 1/4" toe-out, but apparently that required some substantial
> lack
> of fear on the part of the driver. He ran the car with zero toe.
>
>
> On the Tiger the factory alignment was intended for skinny bias-ply tires
> on
> narrow wheels. When you put modern radials on, with aspect ratios from 40
> to
> 60 instead of the OEM aspect ratio of 78, you have to be prepared to make
> some
> adjustments and your tire/alignment shop ought to know that too, even if
> they're not aware of the factory alignment procedure.
>
> Theo
>
>
>> -----Original Message-----
>> From: tigers-bounces@autox.team.net [mailto:tigers-
>> bounces@autox.team.net] On Behalf Of CoolVT@aol.com
>> Sent: September 1, 2010 11:30 AM
>> To: BuckTrippel@Verizon.net; tigers@autox.team.net
>> Subject: Re: [Tigers] Tiger Handling
>>
>> Why do some suggest 1/8" toe out and others 1/8" toe in?
>> Mark L
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