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).
Inspection report on a Bentley 50 rear axle following a dynamometer test.
| Identifier | ExFiles\Box 111\4\ scan0058 | |
| Date | 5th September 1938 | |
| 802 To BV. from HPS{Horace Percy Smith - Experimental Factory Mgr}/LK.{L. King} c. Dev. c. Rm.{William Robotham - Chief Engineer} c. Rm{William Robotham - Chief Engineer}/Gry.{Shadwell Grylls} HPS{Horace Percy Smith - Experimental Factory Mgr}/LK.{L. King}2/VS.{J. Vickers}5.9.38. BENTLEY 50 REAR AXLE. The above semi-floating type rear axle has been dismantled for inspection after completing a further twenty hours' dynamometer test, and the following points were noted. The backlash in the axle gears has increased from .011 to .019; the gears also show very heavy bedding. The angular contact bearings for the bevel wheel show signs of wear in the ball track. The pinion bearings are in good condition. The pinion bearing on assembly was given .002 preload - after test this was checked up and found to be nil. The internal diameters of the differential pinion bushes, produced in A.C.2. material, have worn approximately .010 - also the axle shaft thrust washers of the same material have worn .005 on the thickness. The collars retaining the axle shaft bearing show no signs of having moved, and the bearings are in good condition. HPS{Horace Percy Smith - Experimental Factory Mgr}/L. King. | ||