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).
Lap times and speeds for a 49-GB car during tests at Brooklands under various conditions.
| Identifier | ExFiles\Box 29\3\ Scan081 | |
| Date | 16th June 1920 | |
| EFC/AT. X788 X.788 TYRES CARRIED OUT AT BROOKLANDS WITH 49-GB CAR. 16. 6. 20. RECEIVED R.R. 199 (250) (SD676 2-7-17) M.P.14885 Test 1. Condition - Hood & screen up - cutout closed. Standard axle - 1/4" liners under cylinders. Lap 1 Time: 2 m.{Mr Moon / Mr Moore} 34 s. Speedometer. min. 62 max. at stop. Lap 2 Time: 2 m.{Mr Moon / Mr Moore} 33.5 s. Speedometer. min. 65 max. at stop. Lap 3 Time: 2 m 33 s. Speedometer. min. 66 max. at stop. Average of three. 1/2 mile flying. Time: 27 secs. Speedometer: 65 Stop. 1/2 mile from 10 M.P.H. Time: 44.5 secs. Speedometer: 64 M.P.H. Test 2. Condition. Hood down - screen up - cutout closed. Lap 1 Time: 2 m 32 s. Speedometer. min. 64 max. at stop. Lap 2 Time: 2 m.{Mr Moon / Mr Moore} 32.5 s. Speedometer. min. 63 max. at stop. Lap 3 Time: 2 m.{Mr Moon / Mr Moore} 32.5 s. Speedometer. min. 64 max. at stop. Average fo three. 1/2 mile flying. Time: 27 secs. Speedometer: 69 Stop. 1/2 mile from 10 M.P.H. Time: 44 secs. Speedometer: 64 M.P.H. Test 3. Condition. Hood & screen down - cutout closed. Lap 1 Time: 2 m.{Mr Moon / Mr Moore} 26 s. Speedometer. min. 63 max. at stop. Lap 2 Time: 2 m.{Mr Moon / Mr Moore} 26.5 s Speedometer. min. 63 max. at stop. Lap 3 Time: 2 m 27 s. Speedometer. min. 64 max. at stop. average of three. 1/2 mile flying. Time: 26 secs. Speedometer: 74 Stop. 1/2 mile from 10 M.P.H. Time: 43 secs. Speedometer: 65 M.P.H. Contd. | ||