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).
Request to urge the detailing of hydraulic tappets for the B.60 and an improved exhaust valve for the Wraith & B.V. engine.
| Identifier | ExFiles\Box 133\4\ scan0065 | |
| Date | 19th April 1939 | |
| 1125 Da.{Bernard Day - Chassis Design} from Rm.{William Robotham - Chief Engineer} c. By/CS. Rm{William Robotham - Chief Engineer}5/R.19.4.39. Will you please urge detailing of:- (1) Hydraulic tappets for B.60. (2) Improved exhaust valve for Wraith & B.V. engine. Rm.{William Robotham - Chief Engineer} | ||