Rolls-Royce Archives
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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 results for Allison bearings, including dynamometer data.

Identifier  ExFiles\Box 173\2\  img241
Date  23th February 1934
  
February 23, 1934.
28
ROLLS ROYCE ENGINE BEARING TESTS - Test #7
Allison Bearings.

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

10:13 4000 91 102 140 70 22-22.5
10:16 4000 90.5 103 133 70 21.5-22
10:18 4000 99.5 102 132 71 20.5-21
10:21 4000 88.0 100 131 71 20.2-20.7
10:23 4000 89.0 101 130 72 20.2-20.7
4150 90.5 102 135 31-32
10:25 4250 132 21-21.5
4000 91.0 104 153 70 30-31
4250 90 104 134 74 21-22
10:27 4250 89 105 136 72 24-25
10:30 4250 140 25-26
10:30 1/2 4000 156 28
10:31 4250 132 19.5-20.5
10:32 4000 87 102 137 70 20-26
10:35 4250 90 104 133 70 22-22.5
10:37 4000 90 104 134 70 21-23
10:40 4250 87.5 103 132 70 21-23
10:42 4250 88.5 102 131 71 22-23.5
10:45 4250 90 104 131 25
10:45 1/2 4250- 146 21-23
10:46 4250 136 21-23
10:47 4250 89.5 103 132 70 21.5-22.5
10:50 4250 88.0 102 133 70 21.5-23.0
10:52 4250 90.0 103 133 69 21.5-23.0
10:54 Stop. End of test.

Dynamometer Data.

General Electric Company. Electric Dynamometer

Type TLC-50 250 volts DC 410 amperes.

Absorbs 150 HP @ 2200 - 4500 R.P.M.

Delivers 120 HP @ 1950 - 4500 R.P.M.

Torque arm 21.00 inch.

Formula HP Lb.Pull x R.P.M. / 3000

Scale. 300# by Toledo Scale Co., Toledo, Ohio

General Electric furnish engine & dyn. bed and adjustable pedestals as well as complete instrument panels.

See New York office.
  
  


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