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).
Secret internal memorandum detailing decisions on brake systems and gearbox designs for various chassis.
| Identifier | ExFiles\Box 73\2\ scan0040 | |
| Date | 13th October 1923 | |
| X9940 To BY.{R.W. Bailey - Chief Engineer} from R.{Sir Henry Royce} Hs.{Lord Ernest Hives - Chair} S E C R E T. c. to CJ. BJ. PN.{Mr Northey} E.{Mr Elliott - Chief Engineer} A.{Mr Adams} C. R3/M13.10.23. RE. BRAKES AND GEARBOXES. X. 9320 X. 9360 X. 9940 We have decided that we shall retain double brakes on the back axles on all chassis, leaving no doubt about our system complying with the police regulations. We must stop work on the Goshawk side lever gearbox until we make suitable box fitted with a "Servo" for four wheel brakes. This new box will be for side levers and will be exactly like the modified EFC. box which we are now redesigning. We are adopting the semi-servo system for both chassis because we are assuming that the 20 HP. will be a favourite with ladies, who would not otherwise have sufficient power over the brakes. R.{Sir Henry Royce} | ||