The availability of special high-geared American-made axle ratios.
| Identifier | ExFiles\Box 96\1\ scan0220 | |
| Date | 14th September 1937 | |
| 4015. 361 Hs. {Lord Ernest Hives - Chair} from Rm {William Robotham - Chief Engineer} /Gry. {Shadwell Grylls} c. RHC. {R. H. Coverley - Production Engineer} Rm {William Robotham - Chief Engineer} /Gry {Shadwell Grylls} 1/R.14.9.37. Special High-geared Axle. Hs {Lord Ernest Hives - Chair} 8/KW.13.9.37. When Cx. {Major Len W. Cox - Advertising Manager} was here the other day asking about a special high-geared axle for Thistlethwaites car, we told him that whereas the standard axle was 8/34, we had in the Experimental Department one set each of ratios 8/33 (3% higher) and 9/35 (8% higher). These are American made gears and there is no tackle in the Factory for making more like them. Rm {William Robotham - Chief Engineer} /Gry. {Shadwell Grylls} | ||
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).