Rolls-Royce Archives
         « Prev  Box Series  Next »        

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 logging quarter-mile times and speeds under various vehicle configurations.

Identifier  ExFiles\Box 29\3\  Scan074
Date  2nd June 1920 guessed
  
Contd -
-2-

Average of three
1/4 mile Flying.
Time: 25 1/4 secs.
Speedometer: at stop.

1/4 mile from 10 M.P.H.
Time: 40 1/4 secs.
Speedometer: 70 M.P.H.

Test 4. Condition - Hood and windscreen up - cut-out open.
e Very light wind as for No.3 Test.

Lap 1.
Time: 2 m 19 sec.
Speedometer: min. 74, max. at stop.

Lap 2.
Time: 2 m.19.sec
Speedometer: min. 74, max. at stop

Lap 3.
Time: 2 m.18.s.
Speedometer: min. 74, max. at stop

Average of three
1/4 mile Flying.
Time: 24 secs.
Speedometer: at stop.

1/4 mile from 10 M.P.H.
Time: 38 1/4 secs.
Speedometer: at stop.

Test 5. Condition.) Hood down - windscreen up - cut-out open.

Lap 1.
Time: 2 m.{Mr Moon / Mr Moore} 18 sec.
Speedometer: max. at stop.

Lap 2.
Time: 2 m 18 1/2 s.
Speedometer: max. at stop.

Lap 3.
Time: 2 m.{Mr Moon / Mr Moore} 19 s.
Speedometer: max. at stop.

Average of three
1/4 mile flying.
Time: 23.75 secs.
Speedometer: at stop.

1/4 mile from 10 M.P.H.
Time: 39.5 secs.
Speedometer: at stop.

Test 6. Condition. - Hood down - winscreen down - cut-out open.

Lap 1.
Time: 2 m.{Mr Moon / Mr Moore} 17 secs
Speedometer: max. at stop.

Lap 2.
Time: 2 m.{Mr Moon / Mr Moore} 16 secs
Speedometer: max. at stop.

Lap 3.
Time: 2 m.15 1/4 s.
Speedometer: max. at stop.
  
  


Copyright Sustain 2025, All Rights Reserved.    whatever is rightly done, however humble, is noble
An unhandled error has occurred. Reload 🗙