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).
Endurance test mileage report for a Bentley V test car, detailing component performance.
| Identifier | ExFiles\Box 97\5\ scan0165 | |
| Date | 26th April 1939 | |
| 400B File copy To Sg.{Arthur F. Sidgreaves - MD} Mx.{John H Maddocks - Chief Proving Officer} Hs.{Lord Ernest Hives - Chair} GWH.{George W. Hancock - Head Chateauroux} Hy.{Tom Haldenby - Plant Engineer} HPS.{Horace Percy Smith - Experimental Factory Mgr}( 2 copies) RHO. All testers. Da.{Bernard Day - Chassis Design} Rm{William Robotham - Chief Engineer}/IMW.{Ivan M. Waller - Head of Chateauroux}1/BA.26.4.39 S.B.V. - Bentley V.{VIENNA} 15,000 miles test car. The second endurance test on this car is now completed. 1st test. 18,500 miles. 2nd " 31,800 " Total. 50,300 " The mileage covered by the various components, which completed the running is as follows :- Engine Unit No.7 Miles. Main components. 31,800 No.12 Rocker and No.12 Valve Guide. 29,694. 12 Valve Springs ex 27.G.V1. 28,595. 3 Inlet Valves made by Motor Components Ltd. 44,431. C & A washers on float chamber banjos. 24,294. Spring on Starter Carburetter Needle. 24,294. R.R.Distributor. 29,045. Dynamo and Regulator. 10,834. Clutch Plate. 16,789. 35c Thermostat for Starting Carburetter. 16,784. Starting Carburetter with anti-freeze arrangement. 16,784. Exhaust Valves. 5,275. continued. | ||