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).
Merits of semi-isolation over total isolation for reducing engine vibrations.
| Identifier | WestWitteringFiles\S\March1928-May1928\ Scan032 | |
| Date | 13th March 1928 guessed | |
| contd :- -2- as when the dash and scuttle are flexibly coupled by means of a strip of rubber in compression and clearance bolts allowing a reasonable amount of damped movement. In our experience a normal body loses nothing by semi isolation. Now that we have the rubber engine mounting we do not think that total isolation is in any way necessary to reduce the effect of engine vibrations on the passengers. Our views on total isolation are shared by the Repair Dept. and Paris, while we have but recently received a memo. from Pt. Australia expressing dissatisfaction with the present total isolation scheme. Springfield gave up complete isolation and are using semi-isolation. If the steering column is adequately supported, the scuttle is not called upon to carry any very heavy loads when semi isolation is employed, its steadying effect on the dash, however is very remarkable. HS{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer} | ||