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).
Test on a 3-cylinder engine and the effects of inertia on engine roughness.
| Identifier | ExFiles\Box 159\5\ scan0041 | |
| Date | 26th August 1940 | |
| C O P Y. Jnr.{Charles L. Jenner} from Rm.{William Robotham - Chief Engineer} c. Rm{William Robotham - Chief Engineer}/TAS.{T. Allan Swinden} c. Rm{William Robotham - Chief Engineer}/Wym.{G. Harold Whyman - Experimental Manager} Rm.{William Robotham - Chief Engineer}9/ML.26.8.40. 3-CYLINDER ENGINE. Rm{William Robotham - Chief Engineer}/TAS.{T. Allan Swinden}1/JH.14.8.40 is of considerable interest. We think it is well worth while running a 6-cylinder engine with the front three pistons and push rods removed and we should be glad if Rm{William Robotham - Chief Engineer}/Wym.{G. Harold Whyman - Experimental Manager} would arrange to carry out the test on 8.B.V. as opportunity occurs. We have for a long time thought that the moment of inertia of a power plant had a considerable effect on the engine roughness and that for this reason, aluminium engines were more difficult to get smooth than cast-iron ones, quite apart from the lack of rigidity. Rm.{William Robotham - Chief Engineer} | ||