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).
Specification list of departures from standard for a specific car.
| Identifier | ExFiles\Box 5a\2\ 02-page404 | |
| Date | 9th April 1931 | |
| To Sg.{Arthur F. Sidgreaves - MD} From Ha/Rm.{William Robotham - Chief Engineer} c. 45 FN. 85840 Ha/Rm.{William Robotham - Chief Engineer}1/WJ.9.4.31. 18-04. C.R. The following is a brief specification of the departures from standard on this car :- (1) Cast iron crankcase. (2) Diamond Engine mounting. (3) Large pin crankshaft with balance weights. (4) Hypoid rear axle. (5) Large diameter propeller shaft. (6) Cross-members and brake counter shaft altered to allow the floor of the car to be dropped. (7) Dented tube radiator with thermostatically operated shutters. (8) Low rating road springs with drilled shock absorber valves. (9) Axles lubricated from the centre point system. (10) New clutch lining. (11) Altered radiator and dash. Will you please let us know in due course when you have finished with this car. Ha/Rm.{William Robotham - Chief Engineer} | ||