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).
Results of accelerometer tests, including tractive resistance and acceleration on level ground.
| Identifier | ExFiles\Box 113\2\ scan0010 | |
| Date | 15th December 1922 | |
| ACCELEROMETER TESTS. (P.M.) Tractive Resistance Tests. Results. Road slope 1 in 1000. Tests taken in pairs both ways 20 - 10 m.p.h. Mean Accelerometer reading (a) 24 lbs. per ton. (b) 24.5 " " " Mean stop watch reading (a) 31.2 " " " (b) 29.5 " " " Road slope - almost level. 30/20 m.p.h. Accelerometer 45 lbs. per ton. Time 55 " " " 40/30 m.p.h. Accelerometer 75 " " " Time 87 " " " Eng. break ing in top gear. 30/20 m.p.h. Accelerometer 100 " " " Time 87 " " " Bottom Gear Down Norcock Bank 12 m.p.h. Accelerometer 300 " " " Acceleration on the level. Top gear 20/30 m.p.h. Accelerometer 1.5 ft " " Timed 1.66 " " " 10/20 m.p.h. Accelerometer 1.8 " " " Times. 1.83 " " " Middle gear. 10/20 m.p.h. Accelerometer 2.7 " " " Time 3.08 " " " 10/20 m.p.h. Accelerometer 2.85 " " " Time 2.95 " " " Bottom gear. 10/20 m.p.h. Accelerometer 3.75 " " " Time 3.68 " " " ------------ | ||