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).
Performance test results from Brooklands, detailing lap times and speeds under various conditions.

Identifier  ExFiles\Box 29\3\  Scan082
Date  16th June 1920 guessed
  
-2-
TESTS ON BROOKLANDS - CONTD:

Very light wind blowing across half-mile - straight towards railway.
Water temp. 100°C. at end of second lap on each test.
Test 4. Condition. Hood and screen up - cut-out open. Std. axle. 1/4" liners under cyls.

Lap 1 Lap 2 Lap 3
Time. Speedometer. Time. Speedometer. Time. Speedometer.
min. max. min. max. min. max.
2 m 24.5 s. 67 at stop. 2 m 23.5 s 67 at stop. 2 m 23 s. 68 at stop.

Average 1/2 mile flying. 1/2 mile from 10 M.P.H.
of three. Time. Speedometer. Time. Speedometer.
25 secs. at stop. 43 secs. 66 M.P.H.

Test 5. Condition. - Hood down screen up - cutout open.

Lap 1 Lap 2 Lap 3
Time. Speedometer. Time. Speedometer. Time. Speedometer.
min. max. min. max. min. max.
2 m.{Mr Moon / Mr Moore} 24 s. 69 at stop. 2 m.{Mr Moon / Mr Moore} 23.5 s. 68 at stop. 2 m 23 s. 69 at stop.

Average 1/2 mile flying. 1/2 mile from 10 M.P.H.
of three. Time. Speedometer. Time. Speedometer.
25 secs. at stop. 43 secs. 66 M.P.H.

Test 6. Condition. - Hood and screen down - cutout open.

Lap 1 Lap 2 Lap 3
Time. Speedometer. Time. Speedometer. Time. Speedometer.
min. max. min. max. min. max.
2 m 20 s. 73 at stop. 2 m 19.5 s. 74 at stop. 2 m 19 s. at stop. st stop.

Contd.
  
  


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