Tests on the correct ignition advance for the Peregrine engine at various speeds.
| Identifier | ExFiles\Box 1\8\ B001_X100 Engine Chassis-page213 | |
| Date | 8th August 1932 | |
| To R. {Sir Henry Royce} from Hs {Lord Ernest Hives - Chair} /Rm. {William Robotham - Chief Engineer} c. Sg. {Arthur F. Sidgreaves - MD} Wor. {Arthur Wormald - General Works Manager} c. E. {Mr Elliott - Chief Engineer} Da. {Bernard Day - Chassis Design} c. Bv. Hdy. {William Hardy} X4027av Hs {Lord Ernest Hives - Chair} /Rm. {William Robotham - Chief Engineer} 5/AD8.8.32. PEREGRINE(Experimental Bentley car never produced / Aero Engine) IGNITION ADVANCE We have carried out some tests to ascertain the correct ignition advance for Peregrine(Experimental Bentley car never produced / Aero Engine) at various speeds. We attach a curve No. Rm. {William Robotham - Chief Engineer} Pr.21 which shows that the total ignition advance required is only some 12° between 1,000 and 5,000 R.P.M. Tests on 'China(Experimental Engine)' with the J.I cylinder head, showed somewhat similar results, the total ignition advance required being slightly less than 20°. Hs {Lord Ernest Hives - Chair} /Wst. has suggested that since so little ignition advance is required by these engines it might be possible to simplify the governor providing the automatic range. Hs {Lord Ernest Hives - Chair} /Rm. {William Robotham - Chief Engineer} | ||
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).