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).
Experiment log recording the temperature of oil in a crankchamber at various times and engine speeds.
| Identifier | ExFiles\Box 75\4\ scan0069 | |
| Date | 19th April 1912 guessed | |
| Experiment on Temperature of oil in Crankchamber. Time | heat of oil.cent. | Power 1250 revs. | Power 1000 revs | Power 1450 revs. | Water constant 40° cent. -- | -- | -- | -- | -- | -- 11.20 | 25" | 36 | | | Start 1250 revs 25 | 27 | 41 | | | 30 | 34 | 41 | | | 35 | 54 | 41 | | | Continuous run 40 | 67 | 41 | | | 1 1/2 hrs duration. 45 | 74 | 41 | | | 63 miles. 50 | 78 | 41 | | | 55 | 81 | 41 | | | 12.0 | 83 | 41 | | | 5 | 84.5 | 41 | | | 10 | 86 | 41 | | | 15 | 86.5 | 41 | | | 20 | 87.5 | 41 | | | -- | -- | -- | -- | -- | -- 25 | 88 | | 35.4 | | Start 1000 revs 30 | 87 | | 35.4 | | 35 | 86 | | 35.4 | | -- | -- | -- | -- | -- | -- 40 | 87.5 | | | 45 | Start 1450 revs 45 | 89 | | | 45 | 50 | 90 | | | 45 | Left Margin Text: X879 Bottom Right Text: Section 350Q P.T.O. | ||