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 transfer to oil against RPM for various oil release and sump configurations.
| Identifier | ExFiles\Box 131\1\ scan0118 | |
| Date | 16th June 1933 guessed | |
| CURVE II. RIBBED SUMP USED FOR CURVES BELOW: PER HEAT TO OIL. RELEASE OIL NORMAL RETURNED VIA TAPPETS (SUMP DRAINED) RELEASE OIL DIRECT TO LOWER HALF (SUMP DRAINED) RELEASE OIL DIRECT TO LOWER HALF 1 GALLON IN SUMP RELEASE OIL NORMAL RETURNED VIA TAPPETS (1 GALL IN SUMP) RELEASE OIL TO EXTERNAL TANK ONLY BEARING OIL THRU' SUMP (SUMP DRAINED) BTHUS/MIN LESS RADIATION 500 400 300 200 100 R.P.M. 3500 4000 4500 | ||