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).
Two alternative proposals for wider rear foot brake shoes on the Phantom II rear axle.
| Identifier | ExFiles\Box 12\5\ 05-page168 | |
| Date | 29th November 1929 | |
| X7360 By.{R.W. Bailey - Chief Engineer} from Da.{Bernard Day - Chassis Design} c. Sg.{Arthur F. Sidgreaves - MD} Hs.{Lord Ernest Hives - Chair} Da{Bernard Day - Chassis Design}2/M29.11.29. PHANTOM II REAR BRAKES X.7360 X.7930 This is to confirm having handed to you yesterday N. Scheme 2989. shewing the wider rear foot brake shoes on P.2. rear axle. There are two alternative proposals, the upper one suitable for existing drums, the lower one requiring a new drum. It is suggested one should be brought in as soon as possible as it gives a hand brake shoe of practically the present width. We intended to add the following notes to the drawing: (1) The dust excluder arrangement shewn in the bottom view was by way of a suggestion, and requires the new brake drum to be made of somewhat thicker material. It has the advantage that it gives definitely more room in the wheel arches. (2) We found that of the proposed methods of holding on the dust excluder shewn on N. scheme 2987, fig.4. is not suitable for these brakes. We have therefore indicated something on the lines of fig.1. (3) The additional length between the brake spider and the spring pad is not part of this experiment, but is in connection with the proposal to widen the Rear track from 58.45" to 60". We think you should to this if you conveniently can. | ||