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).
The conversion of a Bentley 60 Unit to a 4 Cylinder Unit.
| Identifier | ExFiles\Box 134\5\ scan0017 | |
| Date | 30th August 1939 | |
| 433. To Rm.{William Robotham - Chief Engineer} from HPS{Horace Percy Smith - Experimental Factory Mgr}/WSC.{W. S. Cassel} [Struck through text] HPS{Horace Percy Smith - Experimental Factory Mgr}/WSC.{W. S. Cassel}2/BA.30.8.39. 4 Cylinder Unit. The details necessary to convert a Bentley 60 Unit to a 4 Cylinder are now ready, will you, therefore, please let us have your instructions as to which unit we are to convert. HPS{Horace Percy Smith - Experimental Factory Mgr}/WSC.{W. S. Cassel} | ||