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).
Test data for Bentley Unit C.10, detailing oil heat and flow rates at various RPMs.
| Identifier | ExFiles\Box 131\1\ scan0115 | |
| Date | 16th June 1933 guessed | |
| BENTLEY. UNIT C.10. Comp. Ratio 6.5/1 (Trep. inlets). White metal bearings .002 clearance. Heat to the Oil at 3500 R.P.M. Oil in at 85°C. } Heat rise 36°C. Oil out at 121°C } Flow through the bearings = 3.06 gal/min. Flow through auxiliaries = 2.52 gals/min. Through the cooler = .54 = 5.2 lbs/min. = 188.4 B.T.U's/min. at 3750 R.P.M. Oil in at 85°C. } Heat rise = 39°C. Oil out at 124°C } Flow through the bearings = 3.32 gals/min. Flow through auxiliaries = 2.58 gals/min. Through the cooler = .74 = 7.12 lbs/min. = 265 B.T.U's/min. at 4000 R.P.M. Oil in at 85°C. } Heat rise = 44°C. Oil out at 129°C. } Flow through the bearings = 3.55 gals/min. Flow through auxiliaries = 2.73 gals/min. Through the cooler = .82 = 7.88 lbs/min. = 322 B.T.U's/min. ---------------- | ||