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 unsuitable installation of a 4-stroke diesel engine at a Technical College, noting severe vibration issues.
| Identifier | ExFiles\Box 133\3\ scan0050 | |
| Date | 2nd March 1939 | |
| 1128 To By.{R.W. Bailey - Chief Engineer} from Rm{William Robotham - Chief Engineer}/Ed.{J. L. Edwards} c. Da.{Bernard Day - Chassis Design} c. Da{Bernard Day - Chassis Design}/Jnr.{Charles L. Jenner} 4-STROKE DIESEL. The above unit is at present installed at the Technical College, the bed consisting of a 3 1/2-litre Bentley for starting purposes, a water brake, and the Diesel engine. No provision has been made for accurate fuel measurement or water or oil temperature measurement. No means of oil cooling or silencer is provided, fumes are very bad and general ventilation is poor. The unit is at present fitted with the combined fuel pump and injector mechanism with a C.R. of approximately 14.0. It was run up to a speed of 2000 R.P.M., max. power and the vibration of the whole bed, brake and floor were so severe that it was considered that only a few hours running would loosen the bed plates from the concrete foundations. In addition, a very severe coupling shaft period came in at 1400 R.P.M. In view of this, it is not considered that any useful work can be done on the present installation without very extensive alterations to the plant, which we do not think would be justified by the results we should obtain. Rm{William Robotham - Chief Engineer}/Ed.{J. L. Edwards} | ||