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 for a 6 G II Open Touring vehicle, showing acceleration, tractive resistance, and radiator efficiency.
| Identifier | ExFiles\Box 29\3\ Scan137 | |
| Date | 1st August 1923 | |
| BROOKLANDS TEST AUG. 1923. 6 G II OPEN TOURING 6 G II ACCELERATIONS ACCELEROMETER----- STOP WATCH ------ ACCELERATION ROAD SPEED M.P.H. 6 G II TRACTIVE RESISTANCE CAR TRACTIVE RESISTANCE LBS PER TON ROAD SPEED M.P.H. SHORT TUBE RADIATOR LAP SPEED 58.6 M.P.H TEMP INLET & OUTLET RADIATOR F° TIME MINS 4 PTS LOST 2 PTS LOST AIR TEMP 25°C. COMPARISON COWL ON ---- COWL OFF ------ NO SHUTTERS LONG TUBE RADIATOR LAP SPEED 59 M.P.H. TIME MINS 1/8 PTS 3/4 PTS 1/4 PTS AIR TEMP 18°C COMPARISON FAN BELT SLACK ------ FAN BELT TIGHT ---- OTTO LOUVRES OPEN ---- NO SHUTTERS | ||