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).
Weight comparison table for components of the E.A.C. Engine and the 40/50 Engine.
| Identifier | ExFiles\Box 3\2\ 02-page104 | |
| Date | 11th February 1924 guessed | |
| Header: (1) | E.A.C. ENGINE | | | | 40/50 ENGINE | | | | INCREASE OR SAVING OF WT. ON EAC. LBS. | |---|---|---|---|---|---|---|---|---| | **SECTION** | **L.O.P.** | **LBS. WEIGHT.** | **% OF TOTAL ENG. WT.** | **SECTION** | **L.O.P.** | **LBS. WT.** | **% OF TOTAL ENG. WT.** | | | Oil Filler | | .56 | .059 | | | | | | | Starting carb. | | .75 | .08 | Oil cock Actuation. Extra cyl: lubrication. | E.22199 | 1.375 | .16 | | | Oil relief Valve. | | 1.25 | .13 | | | | | .092 | | Dynamo suspension. | D.70248 | 1.25 | .13 | | | | | | | Controls. | | 1.75 | .19 | Controls. | E.23168 | 3.0 | .367 | Saved 1.25 | | Oil pump drive. | | 1.75 | .19 | | | | | .367 | | Bottom water pipe. Pump to cylinder. | | 1.875 | .2 | | | | | | | Wiring. | | 3.0 | .32 | Oil Fitts: Governor Drive. | E.22260 | 3.25 | .400 | | | Sparking Plugs (12) | | 3.5 | .373 | Sparking plugs. | | 3.5 | .430 | | | Dist: and Governor. | E.71146 | 3.66 | .32 | Dist: and Gov: Oil Pump and Air pump. | | 17.25 | 2.12 | | | Idler gear. | E.71158 | 3.8 | .40 | Idler gear. | E.17170 | 3.5 | .43 | Increase .34 | | ||