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).
Technical memorandum discussing various schemes for radiator mounting on the Silver Phantom.
| Identifier | ExFiles\Box 109\1\ scan0167 | |
| Date | 18th October 1939 | |
| To Rm.{William Robotham - Chief Engineer} from Ev.{Ivan Evernden - coachwork} cc Rm{William Robotham - Chief Engineer}/FD.{Frank Dodd - Bodies} RE. RADIATOR MOUNTING - SILVER PHANTOM. We did a scheme for a Central Radiator Mounting for Silver Phantom using two Oldsmobile Front Roll-Rod Bearing Rubbers. This is shown on PD,489 of which Rm{William Robotham - Chief Engineer}/FD.{Frank Dodd - Bodies} should have a print, and the original should be in the Strong Room. Naturally this scheme is applicable to all cars having the bent front pan. A similar mounting for cars with a straight front pan has not been done, and cannot easily be done due to lack of room. With respect to bonnet knock spoken of on 30.S.7. it would seem reasonable to suppose that some control to prevent the radiator falling over sideways will be necessary especially with cars having a low cat-walk. The Wraith III has a central radiator mounting and triangular stays from the radiator to the dash, and the scheme is successful. Several attempts were made to change the design without improvement by Rm{William Robotham - Chief Engineer}/Roberts - such as using B.S. rubbers. The only reason one can see why such stays are noisy on Silver Phantom and not on Wraith III, is that the former has a sheet steel dash solid with the scuttle and the latter a cast dash, flexibly attached to the scuttle by the rubber isolation scheme. We suggest therefore that there may be reason to believe that such diagonal stays as used on Wraith III might prove equally satisfactory on Silver Phantom, if they were rubber mounted at the dashboard end, using a scheme rather like that shown in the attached sketch. We remember you suggesting this at the time the car was in France. The suggestion gives an adjustment for the set-up of the rubber, which will enable a compromise to be struck between side shake of radiator and scuttle noise. Ev.{Ivan Evernden - coachwork} | ||