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).
Page listing the weight of a complete Bentley III power plant.
| Identifier | ExFiles\Box 132\2\ scan0049 | |
| Date | 13th December 1938 guessed | |
| -2- (a) Weight complete Bentley III power plant, with flywheel, clutch and electrical equipment...........592 lbs. Rm{William Robotham - Chief Engineer}/Cr.{Mr Cra???ster / Mr Chichester} | ||