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).
List of specifications and requirements for various steering components and assemblies.
| Identifier | ExFiles\Box 92\6\ scan0238 | |
| Date | 28th February 1938 | |
| -3- Description of Part. Manufactured. Details Req'd.{John DeLooze - Company Secretary} Design Req'd.{John DeLooze - Company Secretary} Steering - Con'td. (3) Bottom support bracket Fw.1332 with spigot shortened 0.050 to suit new box. x Yes. (4) Controls to FCD.103. Tubes lengthened 0.050 to suit new box. x Yes. (5) Horn button DCD.126 x Yes. (6) Cam to Adamant No.M.22038 x Yes (7) Roller follower F.89069/70 x Yes (8) Bijur lubricating coil to FCD.79. New rocking shaft required. Angle between roller follower and axis of shaft to suit helix angle of new cam. x Yes. (9) Pendulum lever to suit FCD.79 otherwise similar to F.89092. x Yes. (10) Damper controls at lower end of column. x Yes. Side Steering Tube. (11) Front and rear ball joints as By/HEB.{H. Biraben}12/EH.2)9.9.37. Yes. (12) Tube to be of S/M not jumped up at end, i.e. 0.091 inside dia. throughout length. All above otherwise to By/HEB.{H. Biraben}12/EH.2)9.9.37. Yes. Centre Steering Lever. (13) Existing centre lever G.85630 to be modified to take cross steering tube ball pins specified below. Yes. Cross Steering Tubes. (14) Ball joints to be as standardised on P.III for use with Wraith wheel movement but incorporating adjustment. Yes & new sockets req'd.{John DeLooze - Company Secretary} Cont'd.{John DeLooze - Company Secretary} | ||