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).
Recommendation to make the car heater water connections for the Phantom III model identical to those on the Wraith.
| Identifier | ExFiles\Box 137\3\ scan0010 | |
| Date | 11th January 1939 | |
| 1158 To By/NS.{Norman Scott} from Rm{William Robotham - Chief Engineer}/Std. c. G/Rb.{R. Bowen} Rm{William Robotham - Chief Engineer}/Std.2/MH.{M. Huckerby}11.1.39. We have fitted up a set of Wraith water connection parts for fitting a car heater, on 35.EX P.III car, by tapping out water pump cover boss to .750 dia. 20 TPI RH{R. Hollingworth}, and the installation is satisfactory. We recommend, therefore, that the D.O. instruct car heater connections for P.III identical with those instructed for Wraith, altering the water pump cover to suit. Rm{William Robotham - Chief Engineer}/Std. | ||