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).
The discovery of a cracked piston in a Bentley B.151.HM.
| Identifier | ExFiles\Box 100\3\ scan0099 | |
| Date | 24th August 1939 | |
| To Mx.{John H Maddocks - Chief Proving Officer}... from Rm{William Robotham - Chief Engineer}/GWH.{George W. Hancock - Head Chateauroux} c. By.{R.W. Bailey - Chief Engineer} c. Rm.{William Robotham - Chief Engineer} Rm{William Robotham - Chief Engineer}/GWH.{George W. Hancock - Head Chateauroux}7/N.24.8.39. Bentley B.151.HM{Capt. W. Hallam - Head Repairs} - Mileage 34,693. I am forwarding to you a piston taken out of the above car. The piston was found to be cracked while measurements were being taken of cylinder bores. There was no complaint, the car having come in for a top decarb. The inspector noted what looked like a crack, so the block was lifted to confirm. I have removed the ring which was intact. GWH.{George W. Hancock - Head Chateauroux} | ||