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).
Accelerometer record detailing vehicle performance tests for an Open Touring car.
| Identifier | ExFiles\Box 160\2\ scan0049 | |
| Date | 13th September 1925 | |
| ACCELEROMETER RECORD. Date. 13-9-25 Chassis No G.P.K.3. 20H.P. Axle ratio 11/50 Type of body Open Touring Weight unladen Frnt ...... Total 31 1/2 cwt Passengers.. 2 Road conditions dry. Tarm. setts. Archer & self. 30 M.P.H. 20 M.P.H. 40 M.P.H. 10 - 40 = 22 sec 20 - 40 = 14 1/2 sec 10 - 30 = 14 sec Top. 2.9. 3rd 3.8. 2nd 4.8. 1st 5 ft per sec Short lines denote. performance of. 20HP823. with heavy Grey Closed Body. Taken under similar road conditions on 9-4-24 Mx{John H Maddocks - Chief Proving Officer} & self. | ||