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).
List of engineering component modifications and their status updates.
| Identifier | ExFiles\Box 154a\3\ scan0278 | |
| Date | 1st May 1937 guessed | |
| -2- Rm.{William Robotham - Chief Engineer}167 "L" shaped scraper rings in second grooves. Depot Sheet issued for use in cases of excessive initial oil consumption. Rm{William Robotham - Chief Engineer}/Mst. Ventilation holes in ignition governor casing to help lubrication. Sheet issued. Rm{William Robotham - Chief Engineer}/JBD.{John B. Dixon - Fuel Systems} G.S petrol pump diaphragms with oil silk centres. Instructed for production. SC.5378. Three pump scheme. Sheet completed. Test showed no advantage except as mechanical standby. Rm{William Robotham - Chief Engineer}/JBD.{John B. Dixon - Fuel Systems} "Gaskoid" jointing material in petrol gauge joints on tank. Suitable for standardisation. LeC.5335. Stronger throttle spring. Sheet issued. Lop.S.86403. Downtake pipes, front expansion box and intermediate pipe in M/S Aluminized. Intended for standardisation after examination of parts. TS. 4938. Increased clutch pedal travel to give lighter pressure. Sheet issued. Rm{William Robotham - Chief Engineer}/MRC. Cheaper pilot bearing in rear end of crankshaft for clutch shaft. Hoffman 125. Sheet issued. NS.{Norman Scott}4908. Crinkley steel discs giving increased flexibility to engine coupling. Sheet issued. NS.{Norman Scott}4837. M/S coupling piece with balance ring on engine coupling. Sheet issued. | ||