[Fot] Neg. camber on 1964 tr4

[Stutzmans]

Although the manual doesn't say so; I think that when they went to what 
would be the TR6 upper A arms and ball joint and 3 deg. trunnions (CT6345), 
the camber changed to 0 deg. from the TR3 and early TR4 2 deg. positive.
Bruce
----- Original Message ----- 
From: "Larry Young" <cartravel at pobox.com>
To: <fot at autox.team.net>
Sent: Sunday, March 10, 2013 11:42 AM
Subject: Re: [Fot] Neg. camber on 1964 tr4


> It seems like it would be difficult to get enough change in camber for a 
> TR3/4 by reversing the fulcrum.  The factory spec is +2 degrees, so it 
> takes quite a lot to get to -2.  Lowering helps a little, less than 1/2 
> degree.  If you shorten the upper A arms as many of us have done, you have 
> to remove at least 1/2 inch.  I wrote a short report when I studied the 
> suspension on my TR3 (see 
> http://tildentechnologies.com/downloads/TRsuspension.PDF). There is a neat 
> way to shorten the upper A arms that I discovered from Bob Kramer that 
> does not involve cutting them in two.  I can put up a photo if anyone is 
> interested in it.  The modification is not obvious for organizations that 
> do not permit Heim joints, etc.
> Larry
>
> On 3/9/2013 1:14 PM, Tony Drews wrote:
>> What Richard Good just described for the TR-6 applies to the TR-4 as 
>> well.
>>
>> Tony
>>
>> Richard's message if you missed it:
>> "Reversing the upper fulcrum from factory orientation pulls the control 
>> arms in 1/4" and adds about 1.3 degrees negative camber if I remember my 
>> calculations correctly.  You can do it without removing the control arms 
>> from the fulcrum.   Just remove the four bolts holding the fulcrum to the 
>> tower and the two bolts through the ball joint and remove the whole 
>> assembly.  Then hold the fulcrum and spin the control arms 180 degrees 
>> then bolt the whole assembly on the other side of the car.  This keeps 
>> the front control arm in the front but reverses the fulcrum.
>>
>> Preferred camber will depend on the tires.  The Hoosier A6's that I run 
>> for autocross and hillclimb want 3 degrees.  They are 225/45-15 on 7" 
>> rims.  To get that much camber and to keep the tires clear of my 
>> unmodified fenders I reversed the fulcrums and then slotted the bolt 
>> holes to slide them in even further.  I just took the worn out tires off 
>> and the fronts wore fairly even.  The rears were also set at 3 degrees 
>> but wore more on the inside from squatting under power.  I backed it off 
>> to 2 degrees to see how that works out.  Also changed to a slightly 
>> stiffer spring."
>>
>> At 11:22 PM 3/8/2013, Jon Gannaway wrote:
>>> I am preparing a 1964 tr4 to vintage race in California.  I am looking 
>>> for
>>> simple and easy ways to get negative camber  in the car.  Any 
>>> suggestions
>>> would be helpful.
>>>
>>> Jon Gannaway
>>> 831-402-4080
>>>
>>>
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