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).
Application of a ball journal bearing versus a needle bearing for the 20/25 and Bentley servo shaft.
| Identifier | ExFiles\Box 87\5\ scan0021 | |
| Date | 2nd January 1934 | |
| * 5370 X 241 To HY.{Tom Haldenby - Plant Engineer} from Da.{Bernard Day - Chassis Design} c. Wer. E.{Mr Elliott - Chief Engineer} Hs.{Lord Ernest Hives - Chair} HDY.{William Hardy} RMC. Da.{Bernard Day - Chassis Design}2/HP.2.1.34. GRY{Shadwell Grylls} 20/25 and Bentley Servo. Herewith are N. Sch's 3927 and 3928. The former shows the application of a ball journal bearing to the standard servo shaft on both cars, on the lines of the one now standard on P.2. The latter shows a needle bearing applied to the servo shaft used with 4 direct operated brakes, also on both cars. We cannot use a needle bearing on the standard servo, because of end location, but it suits the 4 direct operated brake servo better than a ball bearing. Da.{Bernard Day - Chassis Design} | ||