Table of combinations for inner and outer springs for the Spectre independent front wheel suspension, arranged by loads and rates.
| Identifier | ExFiles\Box 154\1\ scan0176 | |
| Date | 13th September 1934 guessed | |
| SHEET (5) TABLE III. COMBINATIONS OF INNER AND OUTER SPRINGS. SPECTRE(Codename for Phantom III) INDEPENDENT FRONT WHEEL SUSPENSION. (1) ARRANGED IN ORDER OF LOADS. Normal Load lbs. | Rate lbs/in. | No. of Combination. 1000 | 101.8 | 1 1008 | 100.8 | 2 1078 | 110.9 | 3 1092 | 111.2 | 5 1100 | 110.2 | 6 1108 | 114.6 | 4 1120 | 111.2 | 9 1128 | 110.2 | 10 1141 | 111.2 | 13 1149 | 110.2 | 14 1171 | 120.3 | 7 1200 | 120.3 | 11 1203 | 124.0 | 8 1220 | 120.3 | 15 1228 | 124.0 | 12 1250 | 124.0 | 16 (2) ARRANGED IN ORDER OF RATES. Rate lbs/in. | Normal Load lbs. | No. of Combination. 100.8 | 1008 | 2 101.8 | 1000 | 1 110.2 | 1100 | 6 110.2 | 1128 | 10 110.2 | 1149 | 14 110.9 | 1078 | 3 111.2 | 1092 | 5 111.2 | 1120 | 9 111.2 | 1141 | 13 114.6 | 1108 | 4 120.3 | 1171 | 7 120.3 | 1200 | 11 120.3 | 1220 | 15 124.0 | 1203 | 8 124.0 | 1228 | 12 124.0 | 1250 | 16 | ||
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).