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).
Estimated cost savings comparison for parts between the Bentley II and Bentley 50 models, without any design changes.
| Identifier | ExFiles\Box 112\3\ scan0003 | |
| Date | 6th December 1937 | |
| B.50. ESTIMATED COST SAVINGS. NO DESIGN CHANGE Handwritten: 104 SECTION. Bentley II↓ Matl. Lab.+175% total. Bentley 50. Matl. Lab.+175% Total. Steering column & box. 99.0 245.5 344.5 64.3 151.2 215.5 Side steering tube. 10.7 32.4 43.1 7.7 23.4 31.1 Cross stg. tube & centre lever etc. 9.7 23.4 33.1 17.0 48.7 65.7 TOTAL STEERING. 119.4 301.3 420.7 88.0 223.3 312.3 Gearbox and prop. shaft. - - 910 - - 790 Rear Axle. 180 - - 150 - - Front Bumpers. 97.5 - 97.5 20 - 20 Rm{William Robotham - Chief Engineer}/FJH.{Fred J. Hardy - Chief Dev. Engineer} Handwritten: 850' | ||