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).
Modifications to Phantom valve springs due to insufficient clearance.
| Identifier | WestWitteringFiles\R\January1928-March1928\ 70 | |
| Date | 2nd February 1928 | |
| FROM E.{Mr Elliott - Chief Engineer} Copy to HS.{Lord Ernest Hives - Chair} ORIGINAL PHANTOM VALVE SPRINGS. X8060 X290 X7060 The last valve springs we made for the Phantom were LeC. 2479., and these had a total dimensional coil clearance of .217" and .201" for the outer and inner springs respectively. We were however informed that these clearances were found insufficient, and that the springs had to be modified. Would you kindly let us know what alterations were made so that we can provide for them on EAC. 10. E.{Mr Elliott - Chief Engineer} | ||