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).
To determine the required degree of ignition advance on an EAC engine.
| Identifier | ExFiles\Box 182\M20\M20.2\ img001 | |
| Date | 1st April 1924 | |
| R.R. 493 (40 H) (SL 42 12-7-23). J.H., D.{John DeLooze - Company Secretary} ORIGINAL EXPERIMENTAL REPORT. COPIES TO: (R.C.J) (WOR{Arthur Wormald - General Works Manager}) By E.Da.{Bernard Day - Chassis Design} (R3) Expl. No. x9780 x.3949 REF.Hs{Lord Ernest Hives - Chair}2/LGL.4.24. OBJECT OF TEST. To find degree of ignition advance required on EAC. TESTER. G.{Mr Griffiths - Chief Accountant / Mr Gnapp} Farmer. A.{Mr Adams} C. Lovesey. CONDITIONS. EAC. Engine on test bench. In order to read off the exact point of ignition, the engine was run on 5 cylinders, the plug wires from one cylinder being taken to a pointer and disc marked off in degrees at the front end of Crankshaft. This same means was employed to ensure both ignitions were correctly synchronized at all speeds. SUMMARY OF TEST. The tests show that there is a slight improvement firing both plugs on EAC. with synchronized ignitions. We could not prove that when running with free exhaust we could run with less advance. He. | ||