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).
Programme of test bed work for the Wraith III No. 6 engine, detailing tests for distribution, oil consumption, and the oil filter.
| Identifier | ExFiles\Box 155\2\ scan0165 | |
| Date | 17th November 1937 | |
| To Rm.{William Robotham - Chief Engineer} from Rm{William Robotham - Chief Engineer}/Swdl.{Len H. Swindell} c. Rm{William Robotham - Chief Engineer}/Mths.{Reg Matthews} c. Rm{William Robotham - Chief Engineer}/OTS. c. Rm{William Robotham - Chief Engineer}/Ed.{J. L. Edwards} 1313 Rm{William Robotham - Chief Engineer}/Swdl.{Len H. Swindell}8/MH.{M. Huckerby}17.11.37. PROGRAMME OF TEST BED WORK. Further to our memo Rm{William Robotham - Chief Engineer}/Swdl.{Len H. Swindell}11/MH.{M. Huckerby}27.10.37. NO. 30 BED. WRAITH III NO. 6. Distribution. (1) With best combination of chokes, induction system and any other mods. compare for economy at weakest maintained mixture strength against system (original) which is being used on first batch of engine being produced. (2) With improved distribution what economy is obtained by including suction operated advance ignition unit ? (3) Oil Consumption. (a) Run a further oil consumption test at 4900 RPM. with existing latest rings. (b) Repeat with 2nd compression ring made L section (Rm{William Robotham - Chief Engineer}/Mths{Reg Matthews} to supply rings). (c) Whilst unit is dismantled fit Palmetto water pump gland material in place of existing felt to see if oil leak into clutch pit is improved. (4) Oil Filter. Disconnect bed filter and connect up AC bye-pass filter. Observe by glass tubing whether this is functioning correctly. | ||