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).
Proposed narrower wire wheels for the 20 HP chassis, including alterations to the hub design.
| Identifier | ExFiles\Box 40\3\ Scan104 | |
| Date | 18th October 1927 | |
| BY.{R.W. Bailey - Chief Engineer} from DA.{Bernard Day - Chassis Design} c. to BJ. Hs.{Lord Ernest Hives - Chair} X3580 DA{Bernard Day - Chassis Design}2/M8.10.27. 20 HP. WIRE WHEELS. X.3580 X.4586 X.5810 We send herewith N.sch.2478 shewing the proposed narrower wire wheels for use on the 20 HP. chassis. It will be seen that we propose that the same hubs should be used for both wire and artillery wheels though we have altered the dimensions of the original artillery hub. The span of the ball bearing has been somewhat reduced in both cases. R.{Sir Henry Royce} wishes these wheels with narrower hubs to come in at the same time as the 19" rims come in. The principle object of sending you this drg. is for you to start enquiries as to the possibility of getting the wheels. DA.{Bernard Day - Chassis Design} | ||