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).
Table detailing anticipated weight savings for various vehicle components and associated remarks.
| Identifier | ExFiles\Box 88\3\ scan0148 | |
| Date | 2nd April 1935 guessed | |
| -2- Part | Anticipated Wt. Saving Possible | Remarks. ---|---|--- Brought Forward | 144 lbs. 13 oz. | Dynamo reduced in size | 6 lbs. | Design for increased speed of drive wants completing. Flywheel & Clutch | 20 lbs. | Design required to increase flywheel bearing rigidity to allow disc flywheel to be used. Propellor Shaft and Damper. | 10 lbs. | We have a Hardy Spicer suitable for the Bentley about this weight. Total | 180 lbs. | | ||