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).
Requesting tests on the Phoenix oil pump due to a new, higher projected layout and its potential effect on oil flow.
| Identifier | ExFiles\Box 111\2\ scan0239 | |
| Date | 3rd September 1937 | |
| To HPS.{Horace Percy Smith - Experimental Factory Mgr} from Rm{William Robotham - Chief Engineer}/Swdl.{Len H. Swindell} SECRET. 1044 Rm{William Robotham - Chief Engineer}/Swdl.{Len H. Swindell}S/MH.{M. Huckerby}3.9.37. 800. PHOENIX. The projected layout of the above proposed unit shows the oil pump in a much higher position relative to the oil level than we have previously had. It is important that we should know how much detrimental effect this has on the oil flow, the ability to prime both with cold thick oil and hot thin oil, before being committed to this design. Will you please instruct W.Bell to carry out some tests on these lines on his pump rig. The Phoenix oil pump is housed at approximately 30° to the horizontal and 9" above the sump oil level. Pump gears with both straight teeth 10° angle helix and 22° angle helix should be tried. Bentley pumps with these type of gears are available for the job. Rm{William Robotham - Chief Engineer}/Swdl.{Len H. Swindell} | ||