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 design of the Phantom II silencers.
| Identifier | ExFiles\Box 14\6\ Scan176 | |
| Date | 15th October 1930 | |
| AJL BY/CS. c. Hs.{Lord Ernest Hives - Chair} c. Mx.{John H Maddocks - Chief Proving Officer} K7230. BY4/G.15.10.30. PHANTOM 11 SILENCERS. ------------------- Mx.{John H Maddocks - Chief Proving Officer} has suggested that instead of the main tube which passes from end to end of the silencer being a fit in the baffles, it should be positively clear to the extent that the hole in the baffle should be 1/8" on diameter larger than the tube which passes through it, the tube would then simply be supported at the front and rear ends. Will you please alter some blueprints and issue these to Hs.{Lord Ernest Hives - Chair} to make up a silencer. We should decrease the number of holes in the baffle by the area which we have added in making the clearance round the tube. BY.{R.W. Bailey - Chief Engineer} [Handwritten annotations]: 176, 76, H6, 80, 124 | ||