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).
Requesting the production of a modified set of pistons for the C.XI unit to improve bedding and prevent failure.
| Identifier | ExFiles\Box 86\2\ scan0061 | |
| Date | 7th September 1933 | |
| X236. To RHC.{R. H. Coverley - Production Engineer} from Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer} Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer}14/KT. 7.9.33. C.XI. UNIT. We have now completed sufficient running on these pistons to be satisfied that they will not break. We therefore wish to slightly modify the dimensions of these pistons to see if we can improve the bedding without reproducing the failure which occurred on Hancock's car. We have asked Mx.{John H Maddocks - Chief Proving Officer} to give us his views on alterations required to improve the bedding, and we attach his recommendations. Will you please produce a set of pistons for C.XI unit incorporating these modification. Drg. Ex.11480A. The modifications shown in ink on the attached drawing are where the new pistons differ from those we have just run on C.XI. Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer} | ||