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).
Final acceptance test report for H.I.D. power and throttle curves.
| Identifier | ExFiles\Box 36\2\ scan 102 | |
| Date | 22th February 1927 | |
| EXPERIMENTAL REPORT. COPIES TO: R.C.J. BJ. WOR.{Arthur Wormald - General Works Manager} By.{R.W. Bailey - Chief Engineer} E.{Mr Elliott - Chief Engineer} Da.{Bernard Day - Chassis Design} EP.{G. Eric Platford - Chief Quality Engineer} PN.{Mr Northey} OY. Expl. No. REF. OBJECT OF TEST: Final Acceptance Test for H.I.D. Power & Throttle Curves TESTER: J.{Mr Johnson W.M.} Halliwell CONDITIONS: X F14 Pistons E.29831 - Normal Compression. Valves E.28651 - Strengthened tulip type. Carburettors in the rear, with extra heat to jackets & air intake. SUMMARY OF TEST: The engine was given an hours run at 9/10ths rated power at 2100 rpm. (= 432 BHP) There was no loss of power during the run, petrol consumption averaged .525 pts/HP/HR. Power & Throttle Curves:- ENGINE SPEED. R.P.M. | 2300 | 2200 | 2100 | 2000 | 1900 | 1800 | 1700 POWER CURVES CHP (Bar Only) | 487 | 476 | 464 | 446 | 423 | 402 | 378 C/BHP | 490 | 479 | 467 | 449 | 426 | 405 | 381 Pts/HP/HR | .517 | .519 | .532 | .536 | .536 | .544 | .557 THROTTLE CURVES C/BHP | 493 | 458 | 413 | 384 | 348 | 306 | 279 Pts/HP/HR | .503 | .512 | .523 | .546 | .537 | .557 | .575 | ||