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).
Comparing acceleration times and braking distances of model 117-MC against a standard model.
| Identifier | ExFiles\Box 113\2\ scan0106 | |
| Date | 4th December 1925 | |
| R.R. 498A (50 H) (D.D. 31. 12-6-25) J.H.D. EXPERIMENTAL REPORT. -5- Expl. No. REF Hs{Lord Ernest Hives - Chair}/Rn{Mr Robinson}/LGT4.12.25 Expressing the time to accelerate in m.p.h. and seconds, instead of as in Graph 1. - we have :- Increase in speed. Time taken secs. 117-MC. Standard. 10 - 20 -- 4.9 20 - 30 5.0 5.3 30 - 40 5.4 6.4 40 - 50 6.1 7.7 50 - 60 7.4 11.1 And comparing the distances to rest instead of the retardation produced by the brakes :- Road speed m.p.h. Distance to rest, ft. 117-MC. Standard. 60 150 270 50 94 170 40 70 108 30 40 60 Hs{Lord Ernest Hives - Chair}/W.A. Robotham. | ||