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).
Note about substituting induction manifolds for weight reduction, referencing specific negative numbers, and a clarification on Phantom III brake drums.
| Identifier | ExFiles\Box 160\5\ scan0342 | |
| Date | 28th August 1941 guessed | |
| MANIFOLDS The induction system illustrated in Negative No 5529c and numbered 1.2.3 should be substituted for those numbered 1.2.3.4.5.&6 in the negative numbered 5509c a saving on the total unit weight of 15lbs 12ozs. reducing the section weight to 49lbs 9 3/4 ozs and the aluminium weight of this section to app 16 1/2 lbs. Phantom III did not have aluminum brake drums on production. Rm{William Robotham - Chief Engineer}/Hallam | ||