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).
Modifications and suggestions for an axle shaft, axle tube flanges, and spring seat assembly.
| Identifier | ExFiles\Box 98\1\ scan0103 | |
| Date | 7th July 1937 | |
| -2- E/HDY.{William Hardy}1/M.7.7.37. The axle shaft is made 1.100 diameter instead of the present 1.0" at the request of the Experimental Dept. The splines are unaltered, but the differential bevel wheel, although unaltered as regards the particulars of the teeth, is modified in shape to reduce cost. N.Sch.5174 also shows a centre casing end plate solid with the bearing housing to save cost and weight. The axle tube flanges are secured to the centre casing side plates by 12 - .312 bolts. .250 bolts are retained for the joints between the side plates and the casing. Our suggestion for the fit between the bolts and the holes is that the axle tube holes in the side plates should be drilled .3125+.5, and the holes in the tube flanges (.3125+1/64)+.5. The holes in the side plates and the centre casing should be drilled (.250+1/64)+.5. With bolts .3125-2 and .250-2 respectively the angular rotation allowed will be little more than one quarter of that which occurs with 1/32" clearance holes throughout. The spring seat is shown by LeC.5768. Att: N.Schs.5174 & 5192. E/HDY.{William Hardy} | ||