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).
Description of the differential gear, axle casing, and brake system.
| Identifier | ExFiles\Box 127\1\ scan0037 | |
| Date | 28th March 1917 | |
| -6- face 1¾". The differential gear is of the bevel gear type and looks very small and compact. It has four pinions. The sketch No.5 shews the general arrangement of the axle box and the method of assembly. The axle casing being in one piece (i.e. two halves welded together) the mechanism has to have its units assembled inside the case. The aluminium casting A carries the bevel pinion and the ball bearings B, which support the axle shafts. This casting A is evidently fixed in position first, then the unit C (which consists of the bevel wheel and the differential gear) is put into place and lastly the axle shafts are inserted from the ends of the axle casing. The rear tyres are 37" x 5". Brakes. All the brakes are on the rear wheels and are of a very common type. There is a brake drum bolted to each rear wheel 2½" wide, 16½" internal diameter and 3/16" thick. On the inside of this drum an internal brake operates. It is of the ordinary expanding spring ring type and is faced with asbestos fabric. The ring is 2" wide. On the exterior of the same brake drum an ordinary band brake operates. It consists of a steel strip lined with asbestos fabric and is 2½" wide. It is operated by the usual kind of toggle mechanism. The internal brakes are operated by the side lever which is on the rear side of the car and is operated by the left hand. It works in the usual type of ratchet quadrant and is on the inside of the change speed lever. The external hand brake is worked by the foot pedal which is depressed by the right foot. Contd. | ||