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).
Lost pedal movement and deflection in rear brake systems, with a data table and linkage diagram.
| Identifier | WestWitteringFiles\Q\December1926-January1927\ 123 | |
| Date | 28th January 1927 guessed | |
| contd :- -2- surprising but is substantially borne out in practice. The simplest method of overcoming the difficulty is to reduce the direct rear braking, but this is already less than on EAC.111. We hope to be able to effect a considerable temporary improvement by shrinking a steel band on the rear drums. If the subsequent amount of lost pedal movement is still excessive, we propose to analyse the linkage with a view to ascertaining where the maximum deflection takes place. LOST PEDAL MOVEMENT - FOOT PRESSURE EXERTED 156 LBS. Table Data: Rear brake drum distortion.: .93 Defln: rear axle shafts shoes etc.: .77 Rear spring twist.: .400 Pedal linkage to axle.: .700 Shoe dlce: .020" to servo dlce:: 1.23 Total.: 4.03 Available pedal travel.: 5.00" (a) Distortion in rear axle brake linkage. Diagram Text: E.A.C. 7 40/50 P | ||