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).
Schematic diagram of the Hispano front wheel brake linkage.
| Identifier | WestWitteringFiles\K\November1923\ Scan86 | |
| Date | 29th November 1923 guessed | |
| HISPANO FRONT WHEEL BRAKE LINKAGE Diagram Labels & Dimensions: P 1.0 2.5L 3.22 4.305 SERVO. CABLE TO FRONT BRAKE. TO OPERATE CAM. 2.75 Note: WHEN SERVO WORKING, MOMENT ABOUT THIS PT. IS INCREASED MORE THAN GIVEN LINKAGE SHOWN. Lower Diagram Dimensions: d2 d1 Table: TABLE SHOWING MOVEMENT OF FRONT SHOE FOR MOVEMENT OF FOOT PEDAL MOVEMENT d-d1 | SHOE MOVEMENT .03 | .5 .06 | 1.0 .10 | 1.5 .17 | 2.0 .23 | 2.5 | ||