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).
Engine start test results at low temperatures using different oils with the clutch disengaged.
Identifier | ExFiles\Box 151\3\ scan0338 | |
Date | 10th December 1937 guessed | |
37-EX. WITH MOBILOIL ARCTIC CLUTCH DISENGAGED. Room Temp. | Oil in Sump. | Remarks | Starts every 20 - 30 mins. -8°F | 32°F | 2 secs. started, ran evenly immediately | R.P.M. 50 1°F | 23°F | 3 secs. fired for 9-10 secs. 2 secs. Started. ran evenly immediately | R.P.M. 45 -11°F | 14°F | 7 secs. threw out 3 secs. fired for 12 secs. 7 secs. threw out 4 secs. Started & after 20 secs. ran evenly. | R.P.M. 40 WITH CASTROL X.L. -4°F | 41°F | 2 secs. started & ran evenly immediately | R.P.M. 45 -8°F | 32°F | 2 secs. Started & ran evenly immediately | R.P.M. 40 -11°F | 23°F | 3 secs. threw out 3 secs. started & after 7 secs. ran evenly | R.P.M. 36 -11°F | 14°F | 6 secs. threw out 4 secs. threw out 4 secs. fired for 6-7 secs. 5 secs. Started & after 10 secs. ran evenly | R.P.M. 36 | ||