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 table for various car parts, showing standard vs new weights and the resulting changes.
| Identifier | ExFiles\Box 88\3\ scan0150 | |
| Date | 2nd April 1935 | |
| -2- Hs{Lord Ernest Hives - Chair}/FD.{Frank Dodd - Bodies} S/KW. 2.4.35. Part. | Std. Weight | New Weight | Increase | Decrease | lbs. ozs. | lbs. ozs. | lbs. ozs. | lbs. ozs. --- | --- | --- | --- | --- Radiator with water & lamp pillars | 95 0 | 101 3 | 6 3 | 136 13 Isolated change speed lever | 7 2 | 9 12 | 2 10 | 14" dia. brake drums | 54 4 | 69 4 | 15 0 | 14" brake straps | | | 6 0 | Water Excluders | | 2 9 | 2 9 | Narrow Pin Crankshaft | 60 0 | 58 0 | 2 0 | Rubber Engine Mounting - Front | 18 6 | 22 9 | 4 3 | Cantilever Pedals | 9 0 | 10 10 | 1 10 | Noise Insulation | | 21 0 | 21 0 | Flywheel & Clutch | 75 12 | 85 0 | 10 12 | Large Oil Pump | 2 15 | 3 12 | - 13 | Total = | | | 72 12 | 136 13 Weight saving of 64 lbs. 1 oz. Jackall Jacks | | 46 10 | 46 10 | One-piece alum. mudguards and running boards, each | 49 8 | 53 0 | 3 8 | Hs{Lord Ernest Hives - Chair}/F.Dodd. | ||