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).
Deflection test report for a Bentley rear axle shaft after an endurance run.
| Identifier | ExFiles\Box 98\1\ scan0161 | |
| Date | 28th June 1939 | |
| To BA. from HPS{Horace Percy Smith - Experimental Factory Mgr}/Bl. c. to Rm{William Robotham - Chief Engineer}/Gry.{Shadwell Grylls} 402 HPS{Horace Percy Smith - Experimental Factory Mgr}/Bl.2/JW.28.6.39. BENTLEY REAR AXLE SHAFT. DEFLECTION TEST. Hoffman No.340 - 40 m/m Bearing. GB.4020 Shaft. After 100 hours running at 1,000 R.P.M. 1 Ton load the endurance test was suspended to enable the following test to be carried out. The loading housing replaced by a plate - to enable the deflections of the flange to be measured - and a load of 1 Ton applied through the plate at the equivalent road wheel vertical centre line. The deflections of the axle shaft flange, and also the bowing of the shaft, midway between the bearings and the driving serrations were recorded - as shown in BL.2350. The bearings suggested on DA.{Bernard Day - Chassis Design} 2/G.22.5.39. will be tested when available. Hay Mean turn HPS{Horace Percy Smith - Experimental Factory Mgr}/Bl. | ||