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).
Blueprint for a modified Phantom III exhaust system.
| Identifier | ExFiles\Box 93\1\ scan0073 | |
| Date | 12th November 1936 guessed | |
| MODIFIED PHANTOM III EXHAUST SYSTEM 3.00" 71.00" 2.250 1.750 22.00 48.00 2 - 3 1/2" DIA HOLES IN BAFFLE INNER TUBE IS PERFORATED WITH 20 - .094" DIA HOLES PER SQUARE INCH 27.00 INNER TUBE SAME MESH AS IN REAR SILENCER AREA BETWEEN TWO PIPES TO BE FILLED WITH GLASS SILK 1.750 2.750 G.H.WAYMAN | ||