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).
Graph plotting heat radiated by the crankcase against inlet temperature at a constant speed.
| Identifier | ExFiles\Box 131\1\ scan0112 | |
| Date | 16th June 1933 guessed | |
| Title: CURVE 4. Test Conditions: RUN AT CONSTANT SPEED 3500 R.P.M. RELEASE RETURNED DIRECT TO LOWER HALF (SUMP EMPTY) Curve Label: MEAN OF RIBBED & PLAIN SUMP. Y-Axis Label: ACTUALLY. HEAT TO OIL - HEAT RADIATED BY CRANKCASE. Y-Axis Units: HEAT TO OIL B.TH.U's/MIN PER °C DIFF. IN TEMP. BETWEEN OIL IN SUMP IN ATMOSPHERE. X-Axis Label: INLET TEMP. °C. Y-Axis Scale: 0, 1, 2, 3, 4, 5 X-Axis Scale: 60, 70, 80, 90, 100, 110 | ||