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).
Suggestion to prevent the 'SS' servo plates from seizing.
| Identifier | WestWitteringFiles\T\January1929-February1929\ Scan119 | |
| Date | 6th February 1929 | |
| BY: FROM DA.{Bernard Day - Chassis Design} SECRET. ORIGINAL DA{Bernard Day - Chassis Design}2/M6.2.29. Copy to HS.{Lord Ernest Hives - Chair} 'SS{S. Smith}' SERVO. X7370 We send herewith N. sch. 2816. shewing a suggestion for obviating the difficulty of the pins connecting the two driven plates of the servo seizing up. The suggestion is a plate transmitting the drive in such a way that movement on the bush occurs when there is no load, and when the load becomes great the plate can bend. We are not certain of the exact thickness of the plate, and we should like Derby, if they consider the idea worth trying, to measure the load required to deflect the plate a given amount - we suggest of the order of 10 thous. - and also to measure the actual compression of the ferodo which produces the maximum load. We think this should not be difficult to do. DA.{Bernard Day - Chassis Design} | ||