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 bearing test results log for Allison Bearings, detailing oil temperatures, pressures, and torque loads at various RPMs.
| Identifier | ExFiles\Box 173\2\ img230 | |
| Date | 21th February 1934 guessed | |
| 17 ROLLS ROYCE ENGINE BEARING TEST - Text #5 Allison Bearings TIME R.P.M. OIL INLET °C OIL OUTLET °C BRG. TEMP. °C OIL PRESS. lb/sq.in. TORQUE LOAD 11:05 3000 89.5 96.0 120 73 13.5-14.5 11:10 3000 89.5 96.0 120 75 13.25-13.75 ✓ 11:15 3000 89.0 95.5 117 76 13.0-13.75 ✓ 11:16 3250 89.5 97.0 124 73 18.0-18.5 11:17 3000 89.5 97.0 117 72 13.0-13.5 11:18 3250 89.5 97.0 131 72 15.0-18.0 11:19 3000 89.5 97.0 121 72 13.0-13.7 11:20 3250 89.5 97.0 127 73 15.5-17.0 11:23 3250 89.0 98.0 124 74 15.0-16.5 11:25 3250 90.0 98.0 120 73 15.0-16.0 11:28' 3250 88.0 96.0 118 78 14.7-15.5 11:30 3250 89.0 97.0 118 76 14.7-15.5 11:31 3500 90.5 99.0 144 76 32 11:32 3250 90 99.0 124 74 15.0-16.0 11:33 3500 89.5 99.0 152 70 21-22 11:34 3250 90 100 124 72 14.0-15.0 11:35 3500 89.5 99.0 127 70 17-19 11:38 3500 90.0 99.5 121 70 16.5-17.5 11:40 3500 90.0 99.5 118 70 15.5-16.5 11:43 3500 89.5 99.0 114 71 15.5-16.2 11:45 3500 90.0 99.0 114 71 15.5-16.0 11:48 3500 90.5 99.5 114 71 15.5-16.2 11:50 3500 90.5 99.0 114 71 15.5-16.2 Start diving tests 1 minute at 2250, 30 sec. at 3500 R.P.M. 11:51 2250 89.5 97.0 102 58 7.5 3500 87.5 94.0 110 79 15.5-16.0 11:54 2250 89.0 95.0 98 62 7.5 3500 88.0 94.0 106 79 15.5-16.0 11:57 2250 88 92.0 98 63 7.5 3500 91 91 102 81 15.5-16.0 11:59 2250 91 94 98 63 7.5 3500 91 94 102 75 15.5-16.0 12:02 2250 91 96 98 58 7.3 3500 90.5 95 104 75 15.5-16 12:04 2250 90.5 95 99 60 7.3 3500 90.0 94 104 75 15.2-15.7 12:06 2250 90.5 95 99 60 7.3 3500 90.5 94.5 104 74 15.5-16 12:09 2250 90.5 94.5 98 60 7.4 3500 91.5 95.5 106 72 15.2-15.7 12:11 2250 91.5 96 99 60 7.2 3500 91.0 96 104 74 15.0-15.5 12:13 2250 91.5 96 99 60 7.2 3500 91.0 95.5 104 74 15.5-16 | ||