Triumphs Only, Inc. - Triumph Technical Service Bulletin

Suspension Geometry Data- Triumph - All Models


Model Camber Castor KPI Wheel Alignment Camber Wheel Alignment
Spitfire Mk

I & II

2°POS 6 3/4° 1/16"-1/8" T.I 1/2°POS 1/16"-1/8" T.0
Spitfire Mk III 3°POS 3 1/2° 5 3/4° 1/16"-1/8" T.I 1/2°POS 1/16"-1/8" T.0
Spitfire Mk IV 3°POS 5 3/4° 1/16"-1/8" T.I 1°neg 1/32"-3/32" T.0
GT.6 2 3/4°

POS

3 1/2° 1/16"-1/8" T.I 1/16"-1/8" T.0
GT.6 + and

GT.6 Mk II

2 3/4°

POS

3 1/2° 1/16"-1/8" T.I 0+- 1/32"
GT.6 Mk III 2 3/4°

POS

3 1/2° 1/16"-1/8" T.I 0+- 1/32"
TR.4 2 1/2°

POS

2 3/4° 6 1/2° 0-1/16" T.I - -
TR.4A 1/2°

POS

2 3/4° 8 1/2° 1/16"-1/8" T.I 1/2°POS 0-1/16" T.I
TR.250 1/2°

POS

2 3/4° 8 1/2° 1/16"-1/8" T.I 1/2°POS 0-1/16" T.I
TR.6 1/4°

POS

2 3/4° 8 3/4° 1/16"-1/8" T.I 1/2° POS 0-1/16" T.I
Stag 1° POS 10 1/2° 1/16"-1/8" T.I 1 1/2°

POS

0-1/16" T.I

NOTES:

1. Maximum permissible difference between left and right hand castor and camber is 1 degree.

2. Subject to note 1, the maximum tolerance of camber, castor and KPI. angles is +- 1°.

3. The use of the Swivel Plates is essential, partially when checking Spitfire rear suspensions. Without the use of the plates, side thrust can cause a difference of approximately 15%.


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