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).
Overstressing of the Phantom III carburetter throttle return spring and the specification for a proposed replacement.
| Identifier | ExFiles\Box 93\2\ scan0217 | |
| Date | 25th November 1937 | |
| To By.{R.W. Bailey - Chief Engineer} from Rm{William Robotham - Chief Engineer}/GR.{George Ratcliffe} 368 Rm{William Robotham - Chief Engineer}/GR.{George Ratcliffe}1/MH.{M. Huckerby}25.11.37. PHANTOM III CARBURETTER - SECTION 5080. E.58851 Throttle return spring. E.88302 Link. We would like to draw your attention to the above spring which is still being used on production (last check on chassis 3-CM-155). With E.88302 link, this spring is badly overstressed and immediately takes a permanent set. With the throttle closed - 69,500 lbs/sq.in. open - 116,000 " " " The proposed new spring E.88488 in the open position is stressed 65,500 lbs/sq.in. A standardisation sheet for the latter was issued and completed 26.8.37. Rm{William Robotham - Chief Engineer}/GR.{George Ratcliffe} | ||