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).
List of developments and experiments related to engine components.
| Identifier | ExFiles\Box 4\1\ 01-page356 | |
| Date | 11th May 1935 | |
| -3- Ha/Rm.{William Robotham - Chief Engineer}6/KW.11.5.35. (4) SpectreCodename for Phantom III silent tappets with 8 - 1 eccentric ratio; (5) B-12 unit supercharger experiments. Ha/Gath.3/KW.4.3.35. Ha/Gath.23/KW.8.3.35. Diffuser type supercharger to Ex.17516. (6) Bentley type crankshaft with large four bolt rear main bearing, Borg & Beck 11" clutch, and crankcase to suit N.Sch.4419, Lec.4350. (7) Silent tappet head for Bentley. Ha/Rm.{William Robotham - Chief Engineer} | ||