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).
Comparative cost analysis of inter-lever and piston assemblies for R.R. and Armstrong dampers.
| Identifier | ExFiles\Box 152\2\ scan0075 | |
| Date | 27th October 1937 guessed | |
| COMPARATIVE COSTS OF INTER-LEVER & PISTON ASSEMBLIES OF R.R. & ARMSTRONG DAMPERS. ROLLS ROYCE DAMPER. Nº ON PHOTO, DESCRIPTION, PIECE Nº, COST IN SHILLINGS 1, NUT, F 100882, .409 2, BOLT, F 85055, .476 3, LEVER, F 85054, 4.101 4, PISTON PADS, F 59290, 1.822 5, PISTONS, F 59293, 5.474 6, PISTON SPRINGS, F 59276, .080 7, PISTON BOLTS, F 59285, .562 8, PISTON NUTS, F 59282, .390 9, PISTON DISCS, F 59276, .129 10, .250 DIA: BALL VALVES, , .010 11, VALVE SPRINGS, F. {Mr Friese} 59286, .060 12, TAPER PINS, K 4801, .014 TOTAL COST IN SHILLINGS = 13.527 TOTAL Nº OF PARTS 23. ARMSTRONG DAMPER. Nº ON PHOTO, DESCRIPTION, PIECE Nº, COST IN SHILLINGS 13, NUT, 476-Z, .670 14, BOLT, 476-Z, .670 15, LEVER, 474-Z, 3.322 16, LINKS, 475-Z, 1.105 17, CRANK PINS, 478-Z, .192 18, PISTON PINS, Ex. M. {Mr Moon / Mr Moore} 19, .179 19, PISTONS, 477-Z, 2.995 20, BALL VALVES, , .010 21, VALVE SPRINGS, EX. S. 18, .025 22, VALVE SPRING THIMBLE, 480-Z, .203 TOTAL COST IN SHILLINGS = 8.701 ARMSTRONG DAMPER SAVES = 4.826 TOTAL Nº OF PARTS 17. | ||