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).
Modification to the Phantom II exhaust system's aluminium silencer to avoid drumming.
| Identifier | ExFiles\Box 14\6\ Scan141 | |
| Date | 28th January 1930 | |
| BY.{R.W. Bailey - Chief Engineer} FROM DA.{Bernard Day - Chassis Design} Copy to SG.{Arthur F. Sidgreaves - MD} Copy to HS.{Lord Ernest Hives - Chair} X7230 DA{Bernard Day - Chassis Design}2/M28.1.30. PHANTOM 2. EXHAUST SYSTEM. ALUMINIUM SILENCER. Herewith we send N. scn. 3026. shewing the cutout arranged to avoid aluminium inside the silencer. It will be seen that it is still possible to remove the cutout as a unit. We have made the diaphragm plate rather thick to avoid any possibility of drumming, but it is stiffened by the cutout housing forging. DA.{Bernard Day - Chassis Design} | ||