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).
Graph comparing the sideway deflection of rear springs under load for Cadillac, Spectre, and Phantom models.
| Identifier | ExFiles\Box 95\3\ scan0081 | |
| Date | 25th April 1935 guessed | |
| SIDEWAYS DEFLECTION OF ONE REAR SPRING DUE TO HORIZONTAL TRANSVERSE LOAD AT SPRING CENTRE. SPRING CAMBER 3.65". LATERAL DEFLECTION. P. 3.65. CADILLAC. SPECTRECodename for Phantom III. PHANTOM. 'P' - APPLIED FORCE - lbs. 1.0 .9 .8 .7 .6 .5 .4 .3 .2 .1. 200 400 600 800 1000. CRY I. | ||