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).
Issues found during testing a new Phantom III unit, specifically regarding thicker grommets causing potential damage.
| Identifier | ExFiles\Box 96\2\ scan0165 | |
| Date | 2nd November 1936 | |
| 354 To By.{R.W. Bailey - Chief Engineer} Rm{William Robotham - Chief Engineer}/Swdl.{Len H. Swindell}1/OR.2.11.36. PHANTOM III. We have just had on test a new unit assembled with parts as received from the Works. The valves in the fully lifted position with tappets set normal are choc-a-bloc, and it is, therefore, necessary to run the engine with the plungers right up, which means that the auto adjustment is not in action. After running in, etc. for 6 hours the condition was still the same, and upon removing the grummets found they were considerably thicker than the drawing shows, resulting in the top washer fouling the bottom spring cup in the valve lifted position. We understand that the thicker grummets were instructed for by the Test Dept., but we must point out that if the same thing happens without the precaution of checking, considerable damage may be done; bent push rods, excessive wear on bottom tappets and flats on the cam tips. Rm{William Robotham - Chief Engineer}/L.H. Swindell. | ||