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 design points and decisions for various vehicle components including the engine unit.
| Identifier | ExFiles\Box 97\1\ scan0142 | |
| Date | 29th March 1938 | |
| - 3 - DA.{Bernard Day - Chassis Design}11/G.29.3.38. Wiring. (43). Wiring scheme not yet designed. Radiator. (44). (45). (46). Front Bumper. (47). ----- ENGINE UNIT. ----- Crankcase and Bearings. (1). (2). (3). (4). (5). (6). (7). (8). It is proposed to use a common cylinder head for Wraith and Bentley lll. The studs will then be alike to suit .030 jacket. (9). We agree to this. (10). (11). (12). We have already instructed for the brake lever boss to be moved to clear filter. But we are looking for a rather different arrangement, which will be available shortly. Cylinders. (13). (14). (15). (16). Crankshaft. (17). (18). Wheelcase. (19). It is not obvious to us that the hole is unnecessary. We think it should be tested without the hole. | ||