List of engineering points regarding spring drive, combustion chamber, and induction systems.
| Identifier | ExFiles\Box 123\5\ scan0291 | |
| Date | 1st February 1939 | |
| -13- Rm {William Robotham - Chief Engineer} /Swdl. {Len H. Swindell} 2/MH. {M. Huckerby} 1.2.39. (2) Adaption of spring drive (Wraith type) to isolate cam wheel and shaft coupled with distributor and oil pump from the torsional oscillation of the crankshaft. (3) Intermediate between design of more compact combustion chamber and existing cylinder head an experiment is to be tried whereby the cores of the present pattern can be modified to give a considerable increase in what we have found to be vital, namely the throat area. (4) Throughout the tests the induction system has only been a "mock up" and now we are starting to develop the Duplex Stromberg system. Rm {William Robotham - Chief Engineer} /Swdl. {Len H. Swindell} | ||
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).