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).
Manufacturing cost breakdown for a Phantom I Chassis from the Springfield factory.
| Identifier | ExFiles\Box 19\4\ Scan264 | |
| Date | 12th May 1930 guessed | |
| Page 2 Detail "C" Manufacturing Cost Phantom I Chassis (Springfield). Material Castings 410.91 dollars Forgings 470.41 " Bar, Sheet & Tube 172.67 " Semi-Finished 165.22 " Fin. Parts & Access. 1092.28 " 2311.49 dollars Direct Labour. Heat Treating, sand blast, snagging, machining and polishing 1322 machine hours at 61.7 per hour 815.91 " Assembly, sheet metal, plating and test 1041 man hours at .72 per hour. 749.60 " Mfg. and General Burden (See Detail "D") Based on total Direct Labour (1565.51 dollars) at 165% - 2583.09 " Total Chassis Cost 6460.09 " | ||