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).
List of 17 planned improvements for the Peregrine III engine.
| Identifier | ExFiles\Box 169\4\ img140 | |
| Date | 16th January 1933 | |
| [Illegible, crossed out] Spec. 16.1.33 PEREGRINE III. ENGINE. (1) Improved cooling, New Bottom Half of Crankcase. (2) Ignition Tower Distributor, alteration to level of oil. (3) Improved position of Breather. (4) Larger balance weights to fully balance crankshaft and big end. (5) Spring driven Clutch. (6) Slipper wheel to E's design. (7) Water pump, improved thrust in bronze. (8) Fan, E's scheme for reducing the ratio. (9) Radiator, new type of overflow pipe, end looking forward. (10) Carburetter and Induction Pipe as at present fitted. (11) Exhaust system. (12) Latest type inlet and exhaust valves, as at present fitted. (13) Dynamo voltage control. (14) Starter Motor (New armature). (15) Coil balance resistances to reduce amperage. (16) Drain cock for water system. (17) Improved oil pump position to clear cross steering tube. | ||