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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 log for Test #5 on Allison Bearings, recording various parameters over time.

Identifier  ExFiles\Box 173\2\  img231
Date  22th February 1934 guessed
  
ROLLS ROYCE ENGINE BEARING TEST - Test #5

Allison Bearings

TIME R.P.M. OIL INLET °C OIL OUTLET °C BRG. TEMP. °C OIL PRES. lb/sq.in. TORQUE LOAD

12:15 2250 91.5 96 98 60 7.2
3500 90.5 95 104 74 15.5-16.0
12:18 2250 90.5 95 98 61 7.5
3500 90.5 94.5 104 73 15.5-16.0
12:20 2250 91.0 96.0 99 60 7.5
3500 91.0 95.0 104 72 16.0-16.5
12:22 2250 90.0 96.0 99 60 7.5
3500 90.0 95.0 104 72 15.5-16.0
12:24 2250 91.5 96 98 60 7.2
3500 91.0 96 104 73 15-16
12:26 2250 90.5 95.5 98 61 7.3
3500 90.5 95 102 74 15.2-15.7
12:28 2250 91.0 96 98 60 7.3
3500 91.0 95.5 104 74 15-15.7
12:31 2250 90.5 95.5 99 61 7.5
3500 90.5 95 104 75 15.2-16
12:33 2250 91.0 96 99 59 7.3
3500 91.0 95.5 104 74 15.2-16
12:35 2250 89.5 95 98 61 7.3
3500 90.5 95 104 75 15.5-16.2

End of diving tests 10 min. at 3500 R.P.M.

12:37 3500 91.5 98 116 67 16.0-17.0
12:40 3500 93.0 101 124 65 16.0-16.5
12:42 3500 90.0 99 115 69 15.7-16.5
12:45 3500 90.0 99 114 68 15.2-15.7
12:47 3500 90.0 99 114 69 15.5-16.0
12:50 3500 90.5 99 114 68 15.2-15.7
12:52 3500 90.5 99 114 67 15.2-15.7

Stop. End of Test.
  
  


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