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).
The New Phantom Silencer, confirming test completion and recommending production.
| Identifier | ExFiles\Box 66\2\ scan0133 | |
| Date | 9th December 1925 | |
| R.R. 493A (50 H) (D.D. 31. 12-6-25) J.H.D. EXPERIMENTAL REPORT. Expl. No. X8230 REF: Hs {Lord Ernest Hives - Chair} 4/L09.12.25. To BJ. from Hs. {Lord Ernest Hives - Chair} c. to WOr. {Arthur Wormald - General Works Manager} c. to HY. {Tom Haldenby - Plant Engineer} NEW PHANTOMCodename for PHANTOM I SILENCER. The experimental tests of this silencer are completed. They were reported in our Hs {Lord Ernest Hives - Chair} /ATL/L6 27.11.25 It was agreed that it was not necessary to complete 10,000 miles on this silencer. We are sending one of these silencers out to France to fitted to 8-EX and we anticipate it will have run 10,000 miles before many of these silencers get into customers hands. We have issued a standardisation - this is at present going round for signatures. We see no reason why the Works should not be producing these silencers. Hs. {Lord Ernest Hives - Chair} | ||