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).
Vehicle braking distances under various conditions.
| Identifier | WestWitteringFiles\K\November1923\ Scan12 | |
| Date | 12th July 1923 | |
| R.R. 493A (40 H) (SL 42 12-7-23). J.H., D.{John DeLooze - Company Secretary} -B- Expt. No. 4609 REF: He4/LGB.11.23. EXPERIMENTAL REPORT. BRAKING. BOTH BRAKES. 20 m.p.h. 35.25 ft. 30 m.p.h. 75 " 40 m.p.h. 148 " REAR BRAKING ONLY. FOOT BRAKE ONLY - GOSHAWK-11. 20 m.p.h. 44 ft. 20 m.p.h. 37.1 ft. 30 m.p.h. 99 ft. 30 m.p.h. 97 " 40 m.p.h. 189 ft. 40 m.p.h. 170 " FRONT BRAKES ONLY. 20 m.p.h. 52 ft. 30 m.p.h. 127.5 ft. 40 m.p.h. 272 " **************************** Hs{Lord Ernest Hives - Chair}/Bn.{W.O. Bentley / Mr Barrington} | ||