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).
Graph plotting Brake Horse Power and Brake Mean Effective Pressure against engine RPM for different Weir induction pipe tests.
| Identifier | WestWitteringFiles\R\2December1927-February1928\ Scan191 | |
| Date | 16th February 1938 | |
| 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 | ||