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).
Additional instructions for running the long duration test on engine F.11-27, detailing changes in fuel and measurement requirements.
| Identifier | ExFiles\Box 36\2\ scan 178 | |
| Date | 1st October 1928 | |
| To RG.{Mr Rowledge} from Hs.{Lord Ernest Hives - Chair} c.c. to Wor.{Arthur Wormald - General Works Manager} c.c. to EP.{G. Eric Platford - Chief Quality Engineer} c.c. to Mr. Wilkins A.I.D. X2534 Hs{Lord Ernest Hives - Chair}3/LG1.10.28. ADDITIONAL INSTRUCTIONS FOR RUNNING THE X2531 LONG DURATION TEST ON F.11-27. We have decided to run the full throttle stage on pure Benzol in place of the 50/50 mixture previously instructed Approx. 35 galls. will be consumed during the hour run at full throttle. For all the other stages a mixture of 50/50 - Swan/20/80 fuel will be employed as previously specified. We desire to call particular attention to the necessity of accurate measurement of the fuel used throughout the test. A careful record must be kept of both the weight and volume of the fuel consumed and the consumption over each stage of the running recorded. For this purpose special sheets are provided, one for weight measurements and the other for volume measurement. Weight measurements will be made by weighing each barrel before and after the fuel is pumped into the tank and the volume measurements will have to be made by a calibrated dip stick The volume of fuel in the tank should be recorded immediately at the end of each stage of running and the consumption over these periods entered on the sheets supplied. As one of the principal objects of the test is to determine the least amount of fuel necessary for a duration of 72 hrs. it is imperative that every care should be exercised to contd :- | ||