Performance graph comparing three different Weir induction pipe configurations by plotting Brake Horse Power and Brake Mean Effective Pressure against engine RPM.
| Identifier | WestWitteringFiles\R\2December1927-February1928\ Scan188 | |
| Date | 16th February 1928 | |
| WEIR INDUCTION PIPES TESTS. SHEET I. V252. ① { INDUCTION PIPE & FISHTAIL (WITH NOZZLE) TO SCH. 965. (ONE PIECE PIPE) HOT SPOT PIPE TO SCH. 965. ② DITTO, BUT WITHOUT NOZZLE IN FISHTAIL. ③ STANDARD INDUCTION PIPE. BRAKE HORSE POWER B.M.E.P. (LBS/SQ IN) R.P.M. OF ENGINE. ① ② ③ B.H.P. ① ② ③ B.M.E.P. CONDITIONS OF TESTS: LIGHTER PHANTOM II No AU25: COMPRESSION RATIO = 4.65 STANDARD CAMSHAFT. ANTI-DETONATING TYPE CYL. HEAD. STANDARD CARBURETTORS. STD. TEST BED EXHAUST SYSTEM. AHP 16-2-28 | ||
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).