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).
Table of combinations for inner and outer springs for the Spectre independent front wheel suspension.
| Identifier | ExFiles\Box 95\3\ scan0022 | |
| Date | 7th September 1934 guessed | |
| SHEET (5) TABLE III COMBINATIONS OF INNER AND OUTER SPRINGS. SPECTRECodename for Phantom III INDEPENDENT FRONT WHEEL SUSPENSION. (1) ARRANGED IN ORDER OF LOADS. | Normal Load. Lbs. | Rates 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 | | ||