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).
Specification sheet detailing the weights of a Bentley 6 Cylinder 3½ x 4½ engine and its components.
| Identifier | ExFiles\Box 83\3\ scan0085 | |
| Date | 11th October 1938 guessed | |
| BENTLEY 6 CYL. 3½ x 4½ Engine as in photograph, less flywheel, clutch and electrical equipment 462 lbs. Dynamo (150 watt).. 24 lbs. } Starter Motor..... 22½lbs. } 51 lbs. Drive & Straps.... 4½lbs. } Flywheel & Clutch 55 lbs. (Not standard) _____ 568 lbs. Peak H.P. 127 at 3750 R.P.M. | ||