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 required modifications for the 33-EX car suspension system.
| Identifier | ExFiles\Box 95\2\ scan0129 | |
| Date | 28th October 1936 | |
| RHC.{R. H. Coverley - Production Engineer} 346 Rm{William Robotham - Chief Engineer}/LES.19/JH. 28.10.36; 33-EX Suspension. The following work is required on the above car :- (1) A pair of 1350 lbs. production rear springs ("B" series) without rubber shackles. (2) Rubbers F.88485/6 between axle and rear springs to latest O.P. (3) Damper piston Rm.{William Robotham - Chief Engineer}167 for the front suspension. (4) Front and rear dampers to W. Bell for modifications. (5) Arens solid out casing control to enable the adjustment of the rear dampers to be as free as possible. (6) Fit bell crank levers G.84923/4 to the front brakes. Rm{William Robotham - Chief Engineer}/Les.{Ivan A. Leslie} | ||