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).
Braking distances for different brake configurations.
| Identifier | ExFiles\Box 22\2\ Scan027 | |
| Date | 5th November 1923 | |
| R.R. 493A.(40 H) (SL 42 12-7-23). J.H. D.{John DeLooze - Company Secretary} EXPERIMENTAL REPORT. Expl. No. 4609 REF: Hs{Lord Ernest Hives - Chair}4/LG5.11.23. BRAKING. BOTH BRAKES. 20 m.p.h. 35.25 ft. 30 m.p.h. 75 " 40 m.p.h. 148 " REAR BRAKING ONLY. 20 m.p.h. 44 ft. 30 m.p.h. 99 ft. 40 m.p.h. 189 ft. FOOT BRAKE ONLY - GOSHAWK II. 20 m.p.h. 37.1 ft. 30 m.p.h. 97 " 40 m.p.h. 170 " FRONT BRAKES ONLY. 20 m.p.h. 52 ft. 30 m.p.h. 127.5 " 40 m.p.h. 272 " ------------------- Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer} | ||