Inefficiency of the Wraith servo and proposing the use of the Bentley and 25/30 servo as an alternative.
| Identifier | ExFiles\Box 131\4\ scan0160 | |
| Date | 16th April 1937 | |
| J113. Hs. {Lord Ernest Hives - Chair} from Rm {William Robotham - Chief Engineer} /GWH. {George W. Hancock - Head Chateauroux} RHC. {R. H. Coverley - Production Engineer} E. {Mr Elliott - Chief Engineer} By. {R.W. Bailey - Chief Engineer} Da. {Bernard Day - Chassis Design} MX. {John H Maddocks - Chief Proving Officer} Rm {William Robotham - Chief Engineer} /GWH {George W. Hancock - Head Chateauroux} /R.16.4.37. WRAITH SERVO. The Wraith servo has been found to be inefficient due to general weakness of the design. Considerable time will have to be spent in re-designing to obtain a satisfactory servo. In the Bentley and 25/30 we have got the latest servo with a maximum efficiency which has taken considerable time. to obtain. Why cannot this servo be used on the Wraith. The references for this servo are to be found in;- By {R.W. Bailey - Chief Engineer} /TWD {T. W. D’Aeith} 5/E11.2.37. By {R.W. Bailey - Chief Engineer} /TWD {T. W. D’Aeith} 5/E 7.1.37. By {R.W. Bailey - Chief Engineer} /TWD {T. W. D’Aeith} 2/E30.12.36. By {R.W. Bailey - Chief Engineer} /TWD {T. W. D’Aeith} 5/E26.1.37. Rm {William Robotham - Chief Engineer} /GWH. {George W. Hancock - Head Chateauroux} | ||
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).