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).
Bad crack found in the magnesium lower half crankcase of a Phantom III No. 11 Unit, causing oil leaks.
| Identifier | ExFiles\Box 132\3\ scan0067 | |
| Date | 26th February 1937 | |
| 316. To Rm.{William Robotham - Chief Engineer} from HPS{Horace Percy Smith - Experimental Factory Mgr}/RH.{R. Hollingworth} c. to HPS.{Horace Percy Smith - Experimental Factory Mgr} c. to Rm.{William Robotham - Chief Engineer}/Rowell. HPS{Horace Percy Smith - Experimental Factory Mgr}/RH.{R. Hollingworth}1/BA.26.2.37. Phantom III No. 11 Unit. E.86979 Crankcase L.H. in Magnesium. When the above Unit was dismantled, a bad crack was found in the Crankcase lower half, which is in Magnesium, extending right through the bottom of the sump and giving rise to bad oil leaks. Herewith Ex.1.131 giving all particulars of the crack. The engine has completed 34 hours test bed running 12 hours of which were at full throttle, and has run 18,469 miles in 36-Ex. HPS{Horace Percy Smith - Experimental Factory Mgr}/RH.{R. Hollingworth} | ||