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).
Investigating two complaints regarding the Servo on 3S1, addressing issues with the swinging arm and a design fault.
| Identifier | ExFiles\Box 91\4\ scan0218 | |
| Date | 22th August 1935 | |
| To E.{Mr Elliott - Chief Engineer} Copy to Hs.{Lord Ernest Hives - Chair} BY.{R.W. Bailey - Chief Engineer} FMG. FJH{Fred J. Hardy - Chief Dev. Engineer} x3004 (1) HDY.{William Hardy}2/MN.22.8.35. Servo on 3S1. We have investigated the two complaints in GWH.{George W. Hancock - Head Chateauroux}2/JAB.19.8.35 and find that the second of these is due to our design of the swinging arm not having been followed. The spring for the friction at the top of the arm has been placed on the servo side of the fulcrum instead of on the crossmember side as shown on N.Sch. 4283. However, this trouble automatically disappears with the latest scheme in which the friction is obtained by a separate disc damper (now being fitted to the production cars). With regard to the first complaint this is a design fault and can be remedied by modification to the stop. HDY.{William Hardy} | ||