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).
Comparison of radiator efficiency between a 20 HP car and a 20 HP Alfa Romeo.

Identifier  ExFiles\Box 77\4\  scan0370
Date  12th July 1923 guessed
  
COMPARISON OF RADIATOR EFFICIENCY.

20 HP. ROLLS-ROYCE. - 20 HP. ALFA ROMEO.

Table Headers:
Climbing weight.
Displacement
Axle ratio.
Gear ratio.
Area matrix face.
Depth of matrix.
Area of face per 1000 ltrs: displ: Direct Drive.
Surface of core per 1000 litres displ: per ton mile.
Type of Matrix

Row 1 (20 HP. R-R.{Sir Henry Royce}):
37 cwts.
3126 c.c.
4.545 - 1
2nd. 7.4 - 1
1st. 14.4 - 1
410 sq"
3.95
49.0
12.38 sq.ft.
Air tube.

Row 2 (Alfa Romeo.):
29 cwts.
2975 c.c.
3.83 - 1
4-speed not observed.
383 sq"
3.125
74.5 sq"
15.0 sq.ft.
Air tube.
  
  


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