From the Rolls-Royce experimental archive: a quarter of a million communications from Rolls-Royce, 1906 to 1960's. Documents from the Sir Henry Royce Memorial Foundation (SHRMF).
Two graphs illustrating vehicle steering and suspension characteristics, showing wheel inclination vs lock angle and oversteer/understeer vs lateral acceleration.
| Identifier | ExFiles\Box 98\3\ scan0079 | |
| Date | 21th March 1939 guessed | |
| Fig.2 WHEEL INCLINATION IN RELATION TO CAR OUTWARDS INWARDS 6° 4° 2° 0° 1° 2° 6° CASTER, 3 1/2° SIDEWAYS LEAN 3/4° CASTER 3 1/2° SIDEWAYS LEAN INSIDE LOCK ANGLE 40° 30° 20° 10° STRAIGHT OUTSIDE LOCK ANGLE 10° 20° Fig. 3 UNDERSTEER OVERSTEER CAR AS NOW 6° CASTER, 5° LOCK ANGLE, + 6° CASTER, FULL LOCK, x PRESENT ACKERMANN 6° CASTER, GOOD ACKERMANN, FULL LOCK, ⊕ 10% 20 30 40 50 LATERAL ACCELERATION % GRAVITY | ||