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).
Data table for the L.H. Chassis 25-EX steering geometry curve.
| Identifier | ExFiles\Box 17\4\ Scan003 | |
| Date | 7th March 1931 | |
| X7420. Files. L.H. Chassis 25-EX. STEERING GEOMETRY CURVE. 26/7.3.31. Buffer touching . . . . . . . . . . Zero 0° .24" clear . . . . . . . . . . 1° .75" " . . . . . . . . . . 2 1/2° 1.25" " (Observed) 4° 1.75" " . . . . . . . . . . 4 1/2° 2.25" " . . . . . . . . . . 5° 2.75" " . . . . . . . . . . 6 1/2° 3.25" " . . . . . . . . . . 9° 3.75" " . . . . . . . . . . 12 1/2° 4.25" " . . . . . . . . . . 16 1/2° 4.75" " . . . . . . . . . . 22 1/2° 5.25" " . . . . . . . . . . 28 1/2° Max. rebound 5.6875" " . . . . . . . . . . 33 1/2° | ||