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Size of front end parts

To: tigers@Autox.Team.Net
Subject: Size of front end parts
From: James Barrett <jamesbrt@mindspring.com>
Date: Wed, 11 Nov 1998 20:42:12 -0500
Folks,
Tiger Folks,
        The following info is what I have come up with.
I can not say that these numbers are completely
accurate.  Some items may be  off, don't know
for sure, I used various sources and measuring methods.
Some of this is from a Zeroxed drawing expanded to
"full scale"
The source of the measurment is included on each item:
Sizes in inches:

Any additional information or corrections gladly
accepted.


Distance from centerline of rack to the
center of rotation of spindle.  10   Mayf

Length of the steering arm from center of
steering rotation to center of tie rod end ball. 5.25 Mayf

Angle of steering arm from center of steering  11 Degrees Mayf
rotation to center of tie rod end ball.
(relative to surface of disk or wheel)


Length of tie rod from rack ball center to tie
rod end ball center. 12.5  Tape measure
with bellows still on. Not convienced this is correct.

Length of Upper A arm from piviot to center of 
upper ball.  7.875  Scaled from Zerox

Length of Lower A arm from piviot to center of 
lower ball.   14.125  Scaled from Zerox

Length of Lower A arm piviot to the cross bolt of
the lower ball joint 12.9.  This number came from
the Alpine shop manual and I used it as the reference
to scale the Zerox of the front end drawing.

Distance from upper A arm piviot to lower A Arm
piviot. (or fulcurms , what ever they are called)
10.5 vertical, 5 horz.  Scaled from Zerox

Spindle length, center of upper ball to center of 
lower ball.  10.125  Scaled from Zerox

Height of tierod ball relative to center of lower ball
of the spindle. 4.5  (Top surface of steering arm is
6 up from lower ball.  Tie rod ball 1 1/2 down from
top surface). Tape measure and scaled from Zerox

Height of centerline of rack relative to center of tie
rod ball. ( when Tiger is at normal ride Height).-5/16
Or 4 3/16 up from center of lower ball joint.
[Not sure of this measurment, hard to measure].
Tape measure 


Toe in (or out)change from stopped measurment to
under speed load. i.e. suspension complience effects
on toe in. ?

Steering axis inclination. 7 degrees (in at top)
Scaled from Zerox

Caster ESTIMATED 4 degrees ( back at top).
WAG

Upper A arm angle 2.5 Degrees ( lower at ball joint)
Scaled from Zerox

Upper A arm antidive angle ?

Lower A arm degrees. 0 at rest.
Scaled from Zerox

Spindle up from lower ball joint center 2 13/16.
Scaled from Zerox


All the above have impacts to the angle the tires
are; given a fixed rack movement.

The following value may be of use for figuring
spring rate / height changes:

Lower fulcrum center to shock mounting bolt 7 3/16.
i.e the center of the spring.
Scaled from Zerox

















Length of Lower A arm from piviot to center of 
lower ball.

Distance from upper A arm piviot to lower A Arm
piviot. (or fulcurms , what ever they are called)

Spindle length, center of upper ball to center of 
lower ball.

Height of tierod ball relative to center of lower ball
of the spindle.

Height of centerline of rack relative to center of tie
rod ball. ( when Tiger is at normal ride Height).


Toe in (or out)change from stopped measurment to
under speed load. i.e. suspension complience effects
on toe in.

All the above have impacts to the angle the tires
are; given a fixed rack movement.


James Barrett Tiger II 351C and others



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