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).
Weight comparison sheet detailing increases and excesses for various chassis components.
| Identifier | ExFiles\Box 100\3\ scan0070 | |
| Date | 14th November 1938 | |
| -2- Hm{Capt. W. Hallam - Head Repairs}/Cr.{Mr Cra???ster / Mr Chichester}1/WR.14.11.38. B.V Increase. Lbs. ozs. Frame. 116 0 App. Rear Axle 5 0 Lover type bonnet 12 0 Side spare wheel carrier 10 0 BW Series Excess over B.V. Brakes 23 0 2 galls. extra petrol in Tank 15 0 Front Bumper 10 0 Exhaust System 4 4 Battery Box 8 12 Rear End Suspension and Propellor Shaft 19 0 Floorboards supplied with Car 7 1 Dash Board 14 0 Wheels and Tyres 52 0 Undershields 9 0 app. A point of interest on the two chassis is that much of the weight saved on the B.V. brake operating mechanism is lost on the increased weight of the brake drums. If a semi-floating axle is fitted to B.V., necessitating pressed wheels all round, the decrease in weight would be 3 lbs. | ||