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).
Performance graph from 'Weir Induction Pipes Tests, Sheet III', comparing different pipe configurations.
| Identifier | ExFiles\Box 66a\2\ scan0185 | |
| Date | 29th March 1928 guessed | |
| WEIR INDUCTION PIPES TESTS. SHEET III. V254. ⑥ (INDUCTION PIPE & FISHTAIL (WITH SERRATED NOZZLE) TO SCH. 980 (BUILT-UP PIPE). Hot Spot Pipe to Sch. 980. ⑦ Ditto, but without Nozzle in Fishtail. ③ STANDARD INDUCTION PIPE. BRAKE HORSE POWER B.M.E.P. (LBS/□") R.P.M. OF ENGINE ③ ⑥ ⑦ B.H.P. ③ ⑥ ⑦ B.M.E.P. FOR CONDITIONS OF TESTS, SEE SHEET I | ||