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).
Complaint about broken Chrome Vanadium valve springs and suggesting a trial of carbon valve springs with anti-surge coiling.
| Identifier | ExFiles\Box 158\4\ scan0217 | |
| Date | 4th March 1938 | |
| 1360 By.{R.W. Bailey - Chief Engineer} from Rm.{William Robotham - Chief Engineer} c. Da.{Bernard Day - Chassis Design} c. Rm{William Robotham - Chief Engineer}/Swdl.{Len H. Swindell} Rm{William Robotham - Chief Engineer}7/R.4.3.38. We note on Complaint No.W.130 with GUN37 has broken 4 valve springs in a mileage of 6,727. We observe these are Chrome Vanadium, and we should be interested to know if any defect was found in the wire. We suggest that this is a case where the latest straight carbon valve springs with the anti-surge coiling can be tried. Rm.{William Robotham - Chief Engineer} | ||