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).
The failure of the B.80 No.1 Unit's water pump bearing, spindle, and assembly, part number EB.4206.
| Identifier | ExFiles\Box 124\1\ scan0185 | |
| Date | 3rd July 1939 | |
| To Rm.{William Robotham - Chief Engineer} from HPS{Horace Percy Smith - Experimental Factory Mgr}/RH.{R. Hollingworth} c. Rm{William Robotham - Chief Engineer}/Ed.{J. L. Edwards} c. HPS.{Horace Percy Smith - Experimental Factory Mgr} Handwritten notes: Top: Ed{J. L. Edwards}, 10HH, What can be done about this, Guy Right side: File Ed{J. L. Edwards} B.80 NO.1 UNIT. Failure of Water Pump Bearing, Spindle and Assembly - EB.4206. Failure occurred after running 4,558 miles in 30.G.VII, and 108 hours 15 minutes on test bed, of which 33 hours 5 minutes were full throttle. A number of these bearings have failed including the 50,000 miles test. The average life being about 5,000 miles. This condition is very unsatisfactory and has been pointed out to Rm{William Robotham - Chief Engineer}/Ed.{J. L. Edwards} HPS{Horace Percy Smith - Experimental Factory Mgr}/RH.{R. Hollingworth} | ||