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).
Letter from the American branch to the English branch regarding the necessity of reaction dampers on the Phantom Engine.
| Identifier | ExFiles\Box 55\3\ Scan192 | |
| Date | 8th June 1926 | |
| X235 ROLLS-ROYCE OF AMERICA, INC. SPRINGFIELD, MASS. Oy2-E-6826 June 8th, 1926 Mr. E. {Mr Elliott - Chief Engineer} W. Hives, Rolls-Royce, Ltd., Derby, England. Dear Hives: Reaction Dampers. Will you let me know whether in your experience the reaction dampers are necessary with the Phantom Engine. As I understand these they work to damp out torsional distortion of the crankcase itself, and also some local vibrations in the frame produced by rocking of the engine. It appears that with the enormously stiff engine structure of the Phantom they should be unnecessary. We find them more or less of a nuisance as with changes in the weather they start "grunting" or "cracking", a noise which is often blamed on the front shock absorbers or front springs. Yours very truly, Maurice Olley MO/E | ||