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).
Axle tube design, tyre specifications, and requesting blueprint updates.
| Identifier | WestWitteringFiles\C\February1919\ Scan12 | |
| Date | 19th February 1919 guessed | |
| To BY.{R.W. Bailey - Chief Engineer} from E.{Mr Elliott - Chief Engineer} -2- E1/G19219 Contd. hand of thread so that they would tend to tighten themselves if rubbed by any portion of the revolving wheels. Larger radii should be left on the outside of the axle tube where any change of section occurs,(as shewn in sketch)- [Sketch of an axle tube] It is desired to know whether the nut which holds on the brake anchorage is locked. Referring to the tyres, Mr. Royce thinks that the twin tyres might be 120, used in conjunction with tyres of 120 diameter on the front wheels. The single tyres might be 150 throughout the car. It is desired to know whether tyres of 120 section would carry the front axle load satisfactorily, so as to avoid at any time having unequal tyres on the car. The load carrying capacities of the sizes mentioned should be obtained, and to be right, the twin tyres should have about 40 to 50% more carrying capacity than the size of single tyre selected for the back wheels. In accordance with Mr. Royce's wishes, would you kindly incorporate all of these points in a new scheme, and resubmit a blue print. [Handwritten note:] The general thickness of the hub shell might be refined to that shown on LC-1056. E.{Mr Elliott - Chief Engineer} [Signature] | ||