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).
Helix angle of Cadillac steering and comparing its shock immunity to La Salle steering.
| Identifier | ExFiles\Box 28\3\ Scan076 | |
| Date | 22th November 1934 | |
| x4094 To E.{Mr Elliott - Chief Engineer} c. to Wor.{Arthur Wormald - General Works Manager} c. to Da.{Bernard Day - Chassis Design} c. to Hy.{Tom Haldenby - Plant Engineer} Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer}4/KW.22.11.34. We have just received the following cable from Olley in response to our telegram asking him for details of the helix angle on the Cadillac steering :- "HELIX ANGLE SIX DEGREES 35 MINUTES AT CENTER". We think this is interesting in that the Cadillac steering is definitely more immune from road shocks than the La{L. A. Archer} Salle steering at present fitted to the SpectreCodename for Phantom III. Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer} | ||