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).
Feature list comparing design options for the next Phantom III engine's flywheel and clutch.
| Identifier | ExFiles\Box 91\1\ scan0548 | |
| Date | 5th December 1938 | |
| 300. Rm.{William Robotham - Chief Engineer} c. BY DA.{Bernard Day - Chassis Design}5/G.5.12.38. File NEXT P.111 ENGINE - FLYWHEEL AND CLUTCH. The following are the features we might expect to get on the, next engine, Flywheel and Clutch :- Not-detailed (1). Packard Type Crankshaft. E.CD.284 Mods. to Crankcase (small) No details done. Economy. Increased bearing area and reduction cost, but design doubtful advantage. (2). Elimination of Hand Ignition Control. No design for, but small job. No Mods. to crankcase. Economy. detailed (3). Wraith type Barrel type Tappets. E.CD.521 and three more. No mods. to crank-case. Details nearly correct. Economy and probable reliability. (4). Water Pump Drive. E.CD.586 No mods. to crankcase. Details done. Increased flexibility of drive to avoid existing troubles. (5). Bye-pass Filter. (General) E.CD.715 E.CD.726 require re-examination for P.lll steering. No mods. to crankcase. No details done. Economy. Reliability. (6). 12" Long Clutch. Scheme requires Vetting say 3 days or less. No mods. to crankcase or shaft. New flywheel (not flexible). Economy, and reliability. DA.{Bernard Day - Chassis Design} | ||