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 to a semi-floating axle for the B.111 chassis, including changes to bearings and tubes.
| Identifier | ExFiles\Box 98\1\ scan0131 | |
| Date | 27th September 1938 | |
| BY/HS.{Lord Ernest Hives - Chair} c. Rm.{William Robotham - Chief Engineer} ------ 402 DA.{Bernard Day - Chassis Design}3/G.27.9.38. B.111. CHASSIS - SEMI-FLOATING AXLE. Please receive herewith blueprints of G.CD.892 showing the semi-floating axle for the above chassis. The centre casing has been modified to suit "Timken" Taper Roller Bearings. The axle shafts are smaller in diameter due to the introduction of the Hoffmann 1st. 340 Medium Ball Bearing (40 m/m x 90 m/m x 23 m/m). Advantage has been taken of the smaller overall dimensions of the "Timken" Bearing to reduce the diameter of the flange at the large end of the axle tube. The tube also has an integral flange at the other end for the brake carrier plate. A spigot plate is shown between the end flange and the ball bearing housing, and this plate has been extended so as to reduce the deflection in the brake carrier plate. The spring suspension bracket is of a new type, and is held in position by taper pins. We should like a detail of the axle tube as shewn here for submission to Messrs. Tubes LTD. for final quotation. They have already agreedthat they can make it. The outer end flange of the tube has been made the diameter shewn, so as to make the B.111 and B.50 tubes interchangeable, except for length. The brake carrier parts are also interchangeable in spite of the larger bearing on B.50. DA.{Bernard Day - Chassis Design} | ||