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).
Westinghouse 56 C.G. starting motor tests on a 6-cylinder engine.

Identifier  ExFiles\Box 23\2\  Scan067
Date  8th February 1921
  
X. 1086. 4.F-X.
Original High Speed Winding
ROLLS ROYCE OF AMERICA, INC.
WESTINGHOUSE 56 C.G. STARTING MOTOR TESTS ON
ROLLS-ROYCE ENGINE - 6 CYL. 4½x 4¾

TEST #1.
Feb. 8, 1921.

Exide Battery #6-LXR-9, 67 A.H. Sp.{Mr Spinney} Gr.{George Ratcliffe} 1240.

R.P.M. VOLTS VOLTS AMPERES AMPERES
ENGINE BATTERY MOTOR RUNNING START

100 7.5 6.55 250 325
104 7.5 6.45 250 300
0 4.5 2.75 0 410
0 4.5 2.75 0 400

TEST #2

Willard S.J.W.-28 Battery 90 A.H. Sp.{Mr Spinney} Gr.{George Ratcliffe} 1250.

R.P.M. VOLTS VOLTS AMPERES AMPERES
ENGINE BATTERY MOTOR RUNNING START

144 10 8.75 240 325
144 9.75 8.75 250 325
144 9.75 8.7 250 330
0 Clutch slipped; could not get locked current.

TEST CONDITIONS

Starting Motor Cable 27' #00
Temperature 55° F.{Mr Friese}
Engine well run in.
Revolutions taken for 15 second intervals.

R.{Sir Henry Royce} G.{Mr Griffiths - Chief Accountant / Mr Gnapp} Thompson
ENGINEER.
  
  


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