The material composition and required Brinell hardness for Bentley V front suspension levers.
| Identifier | ExFiles\Box 97\1\ scan0273 | |
| Date | 2nd December 1938 | |
| Rm. {William Robotham - Chief Engineer} Rm {William Robotham - Chief Engineer} /APM. Rm {William Robotham - Chief Engineer} /CR. {Mr Cra’ster / Mr Chichester} Da. {Bernard Day - Chassis Design} BY {R.W. Bailey - Chief Engineer} /HEB. {H. Biraben} BY {R.W. Bailey - Chief Engineer} /Ald. {F. Allwood - Experimental Design} Cgh {W Clough} /EM. Handwritten: 400 . BY {R.W. Bailey - Chief Engineer} /NS. {Norman Scott} 12/G.2.12.38. 15s Billet £13n 15s LES what does this mean in cost? Rm {William Robotham - Chief Engineer} BENTLEY V. {VIENNA} FRONT SUSPENSION LEVERS. RE: MEMO Rm {William Robotham - Chief Engineer} /CR. {Mr Cra’ster / Mr Chichester} 16/MH. {M. Huckerby} 30.11.38. It has now been decided to produce the Torque Arm Upper and Lower Triangle Levers in 1% chromium steel. The composition of the steel is as follows:- .8% to 1% Chromium. .5% to .8% Manganese. .35% to .45% Carbon. These pieces should be heat treated to give a brinell of 200 to 255. Will Cgh {W Clough} /EM. kindly issue a specification to cover this material to enable BY {R.W. Bailey - Chief Engineer} /Ald. {F. Allwood - Experimental Design} to include it on the material chart. S/CMC 426 BY {R.W. Bailey - Chief Engineer} /NS. {Norman Scott} Handwritten: EB 4189 Lof Red | ||
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).