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).
Bench test report for an EAC II engine, number 6-EAC-II.
| Identifier | ExFiles\Box 69\4\ scan0283 | |
| Date | 18th March 1925 | |
| BENCH TEST REPORT TYPE OF ENGINE: EAC II ENGINE NO.: 6-EAC-II DESCRIPTION OF ENGINE: - COMPRESSION RATIO: 4.1 : 1 INDUCTION SYSTEM: STANDARD EXHAUST SYSTEM: TEST HOUSE PIPES DATE: 18.3.25 BAROMETER: AIR TEMP: VALVES: BATCH OF MATERIAL SILCHROME SPECIALLY TREATED AFTER BREAKAGES. CAMSHAFT LIFT: TAPPET CLCE: '004" AT 70°C TIMING. Valves with .010" clce: Inlet. Opens. 3° P.T.D.C. Closes. 38° P.B.D.C Exhaust. Opens. 48° B.B.D.C. Closes. 6° P.T.D.C Ignition. Pts. break fully retarded. Battery. 5° P.T.D.C 7° P.T.D.C. ENGINE STANDING Magneto. 10° B.T.D.C Power & Consumption. C.O. open. R.P.M. | B.HP. | Pts/ hr. | Oil press: 600 750 | 43.8 1000 | 57.0 1250 | 70.7 1500 | 84.8 1750 | 95.1 2000 | 101.6 2250 | 103.0 2500 2750 Dynamo. Max. output at 1050 r.p.m. Amps. 15 Output at 2000 r.p.m. 11 AMPS Crankcase pressure- 6" OF WATER AT 2500 RPM Slow running Engine gears: FAIR Oil used: PRICES MOTORINE C. Total hrs. run: 69 HRS REMARKS:- Cylinder lubrication excessive. Dynamo noisy. Oil leaks from gauge casing joint to bottom half crankcase. Cylinder head gasket leaks badly. After tests - engine fitted to Chassis No. 93-NK. | ||