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} | ||
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).