[Fot] Toe-in question on TR4

[brad.kahler at 141.com]

Those of you who suggested that tire pressure might be the answer were
correct, Chris specifically when he suggested 30 to 32 in the front.B 

I
tookB Chris's advice and bumped the fronts to 32 and left the rears at 28.
Made a huge difference in the turns.  Even most of the twitchyness went away
in the straights.  I think I'm going to try 33 and possibly even 34 to see how
it handles.

As for the steering rack mounts, they are solid with no
noticeable movement side to side.  The rack is solid mounted in aluminum
blocks that are pinned so the rack can't slide side to side or rotate.

Thanks
for all the suggestions!

Brad


-----Original Message-----
From: "John Hasty"
<jhhasty at gdhs.com>
Sent: Saturday, June 30, 2012 8:41pm
To: "Brad Kahler"
<brad.kahler at 141.com>
Cc: "sherry robyn" <sherryjimmy6116 at att.net>, "Friends
of Triumph" <fot at autox.team.net>
Subject: Re: [Fot] Toe-in question on TR4
All I can say deals with Hoosier Sportsters radials on the race track & each
track is different; but the range is usually 28 -29 on the front side with the
most turns ( ie more lefts or more rights) & 26 -27 on the other.  The rear
tires are both the same @ 26 -27.  Neg camber is 3degrees.

Sent from my
iPhone

On Jun 30, 2012, at 6:26 PM, Brad Kahler <brad.kahler at 141.com> wrote:
> Good thought.
> 
> Any ideas out there as to what pressures to run front and
rear?
> 
> Right now I think I have them balanced at 28 psi on all corners.
>
> 
> On Sat, Jun 30, 2012 at 1:18 PM, sherry robyn
<sherryjimmy6116 at att.net>wrote:
> 
>> Hi, maybe you need more air pressure in
the front tires.  Jim
>> 
>> ------------------------------
>> *From:*
"brad.kahler at 141.com" <brad.kahler at 141.com>
>> *To:* Friends of Triumph
<fot at autox.team.net>
>> *Sent:* Sat, June 30, 2012 7:08:07 AM
>> *Subject:*
[Fot] Toe-in question on TR4
>> 
>> Amici,
>> 
>> My question is on my street
TR4.  I've rebuilt the steering rack,
>> replaced the tie rod ends, new Kumho
195/65R15 tires on new mini-lite
>> replicas.  Stock front suspension
components with the 3 degree castor
>> trunnions.  The suspension is tight
with no slop in the steering that I can
>> detect.  Toe-in has been set to
1/16" (I read somewhere that for radials
>> this
>> would be the appropriate
setting).  Smaller diameter later TR6 steering
>> wheel.
>> The problem is
when coming into a turn and when you first start turning the
>> steering wheel
the car acts like it wants to start turning and then it
>> feels
>> like
you're plowing into the corner and it seems to not want to make the
>> turn.
>> It takes two hands on the steering wheel to make the turn.  Also in
>>
straight
>> ahead driving it seems real twitchy.  In other words a slight
movement of
>> the
>> wheel either direction and it seems to over react.
>>
>> So, is this a toe-in
>> problem?  If so do I need more toe-in or less
toe-in?
>> 
>> Years ago I had a 73
>> TR6 and I don't remember this kind of
response from the steering.
>> 
>> Other than
>> this issue the car rides
smooth as glass.
>> 
>> Any suggestions?
>> 
>> Thanks,
>> 
>> Brad
>>
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