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).
List of weights for various Bentley car components, comparing different materials and designs.
| Identifier | ExFiles\Box 88\3\ scan0078 | |
| Date | 10th December 1934 | |
| BENTLEY WEIGHTS 10.12.34 DISC TYPE FLYWHEEL AND CLUTCH WEIGHTS WEIGHT OF REVOLVING PARTS 57.75 LBS WEIGHT OF CLUTCH OPERATING MECHANISM 5.937 LBS TOTAL 63.687 LBS CLUTCH CASINGS WEIGHT OF MAGNESIUM CLUTCH CASING COMPLETE WITH STUDS AND BUSHES 8.750 LBS. WEIGHT OF ALUMINIUM CASING COMPLETE WITH STUDS AND BUSHES 12.375 LBS REDUCTION IN WEIGHT OF CASINGS IN MAGNESIUM 3.625 LBS DASH BOARD - F3.110 NEW TYPE (MAGNESIUM) 20 LBS PREVIOUS TYPE (ALUM) 30 LBS PETROL TAP - LOP F.86735 NEW TYPE (SPECTRECodename for Phantom III DESIGN) 1LB 1OZ PREVIOUS TYPE 1LB 5.5 OZS. PETROL FILTER - LOP F.86735 NEW TYPE (SPECTRECodename for Phantom III DESIGN) 1LB. 6 OZS. PREVIOUS TYPE 1LB. 9 OZS. PETROL PUMP - S.U. NEW TYPE (SPECTRECodename for Phantom III DESIGN) 4LBS 8.5 OZS PREVIOUS TYPE 4LBS 8.75 OZS ELECTRIC PETROL GAUGE (TANK UNIT) NEW TYPE - 13 OZS. PREVIOUS TYPE - 11.25 OZS STEERING COLUMN SCALED DOWN TYPE 32LBS - 6 OZS. | ||