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).
Production efficiency report detailing casting times and weights for various components.
| Identifier | ExFiles\Box 132\3\ scan0069 | |
| Date | 5th August 1937 | |
| COPY X.42612 Crankcase (Sand Cast). Weight 204 lbs. Total man hours per casting 21 hours. Weight produced per Man Hour 9.7 lbs. 157376 Sump (Sand Cast.) Weight 33 lbs. Total Man Hours per casting 5 hours. Weight produced per Man Hour 6.6 lbs. X42797 Inlet Manifold (Sand Cast) Weight 4½ lbs. Total man hours per casting 1½ hours. Weight produced per Man Hour 3 lbs. 131672 Oil Filler (Sand Cast) Weight 3 lbs. Total Man Hours per casting 3 hours. Weight produced per Man Hour 1 lb. 134139 Gear Box (Die Cast) Weight 51 lbs. Total Man hours per casting 3 hours. Weight produced per Man Hour 17 lbs. 60527 Compen Casting (Die Cast) Weight 36 lbs. Total Man hours per casting 2 hours. Weight produced per Man Hour 18 lbs. 158464 Housing (Die Cast) Weight 9 ozs. Total Man Hours per Casting 1/12th. Weight produced per Man Hour 6¾ lbs. X12209 Roller (Die Cast) Weight 1 oz. Total Man hours per casting 1/16th. Weight produced per man hour 1 lb. All the units given refer to direct production, labour only; no administration included. -------------------- L.S. 5.8.37 | ||