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).
Review of radiator mountings on various models and a proposal for a new scheme to address issues with sideways shake.
| Identifier | ExFiles\Box 150\2\ scan0335 | |
| Date | 14th March 1940 | |
| 1280 To Rm.{William Robotham - Chief Engineer} from Ev.{Ivan Evernden - coachwork} c. to Rm{William Robotham - Chief Engineer}/FJH.{Fred J. Hardy - Chief Dev. Engineer} c. to Rm{William Robotham - Chief Engineer}/FD.{Frank Dodd - Bodies} Ev.{Ivan Evernden - coachwork}5/JH.14.3.40. [Handwritten]: FJH{Fred J. Hardy - Chief Dev. Engineer} Radiator Mounting. We have reviewed the radiator mountings of all models, both with straight and bent front pan. The B.V. Ripple and B.50 have straight front pans and 2 metalastic rubber mountings several inches apart, transversely. The cars of the present senior range, which the above do not enter have bent front pans and a single central metalastic mounting. It has been reported that whilst the B.V. and its associates are reasonably satisfactory from the point of view of shake, the examples of the bent front pan cars are not so good. It has been contended that the single mounting has not sufficient sideways control of the radiator. The centre of oscillation of the radiator is known to be high above the mounting. Experiments carried out on Wraith III by Rm{William Robotham - Chief Engineer}/Wym.{G. Harold Whyman - Experimental Manager} some while ago, whereby the single central Silent Travel Bush was replaced by a single Metalastic Block produced the same sideways shake at the base of the radiator as experienced on 30.G.7. We were requested to reproduce the Wraith III scheme for 30.G.7. but no-one wanted the cost of the Silent Bloc Bush. Accordingly we produced a scheme for 30.G.7. called PD.489 dated 9.8.39. using two Oldsmobile Roll Rod Rubber bearings. We would like this scheme to be tried on either 30.G.7. 33.G.7. 11.B.V. or 4.B.50. If it is satisfactory it can be applied with no difficulty to other models of the Senior Range. It overcomes all of HPS{Horace Percy Smith - Experimental Factory Mgr}/RH{R. Hollingworth}'s criticisms of the mounting of the radiator on the bent front pan. Cont'd.{John DeLooze - Company Secretary} | ||