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 results for heat flow to oil in a Peregrine Unit No. 2, investigating lead bronze bearing metal and comparing standard vs. pinned sumps.
| Identifier | ExFiles\Box 131\1\ scan0116 | |
| Date | 16th June 1933 guessed | |
| HEAT FLOW TO OIL - PEREGRINE UNIT NO. 2. LEAD BRONZE BEARING METAL. SPECIFIC HEAT MOTORINE 'C' AT 100°C = .470. 1 GALL OIL AT 90°C - 8.75 LBS. | CONDITIONS OF TEST. | STANDARD SUMP. | PINNED SUMP. | |---|---|---| | | HEAT FLOW TO OIL IN. - B.T.U'S/MIN. | | | | 3500 | 4000 | 4500 | 3500 | 4000 | 4500 | | Oiling Circulating Standard (Sump empty) | 193 | 283 | 436 | 202 | 291 | 408 | | " " (1 gall in sump) | 217 | 310 | 438 | 200 | 315 | 425 | | Release oil to tappet cover blanked, being returned direct to sump (rear compartment where the outlet was taken) (Sump empty) | 202 | 291 | 368 | 200 | 258 | 349 | | Ditto - (1 Gallon in sump). | 191 | 305 | 398 | 178 | 273 | 371 | | Release oil returned direct to the external supply tank (sump empty) | | | | 178 | 257 | 340 | | B.H.P at test speeds. | 67.5 | 71.0 | 69.0 | | | | | Oil Press. " " | 30 | 32 | 34 | | | | Tests carried out with constant oil inlet temp. of 80°C. | ||