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).
Diagrams and data for Hispano-Suiza front wheel brakes, including cam contour and displacement curves.
| Identifier | WestWitteringFiles\K\December1923\ Scan49 | |
| Date | 4th December 1923 | |
| HISPANO FRONT WHEEL BRAKES. DISPLACEMENT CURVE OF SHOE FACE, SERVO NOT IN OPERATION. <-- BRAKE ON JUST TIGHT FRONT & REAR BRAKE SHOES MOVE EQUALLY. MOVEMENT OF FOOT PEDAL TABLE: MOVEMENT OF FOOT PEDAL | DISPLACEM'T OF SHOE FACE .25 | .005 .50 | .025 .75 | .035 1.00 | .075 1.25 | .110 1.50 | .110 BRAKE ON JUST TIGHT .005 BRAKE PEDAL MOVEMENT MEASURED HERE CONTOUR OF CAM OPERATING HISPANO SUIZA FRONT BRAKES. SCALE 4/1. FACE OF SHOE IN 'OFF' POSITION. 12.15 TO CENTRE OF SHOE PIVOT. 1.560. .712 DISPLACEMENT OF FACE OF SHOE FOR ANGULAR DISPLAC'T. MOVEMENT OF CAM. ANGULAR MOVEMENT OF CAM IS GIVEN IN DIVISIONS WHERE 1 DIV = 7.375°. ANGULAR MOVEMENT OF CAM TABLE: ANGULAR M.MENT OF CAM IN DIVISIONS. | DISPLACEMENT OF CAM FACE. 1. | .0428 2 | .0878 3 | .1358 4 | .180 5 | .217 6 | .262 7 | .300 8 | .340 9 | .380 10 | .415 11 | .425 12 | .425 } FERODO TIGHT AGAINST DRUM WHEN DRUM IN POSITION. DIAGM. OF THE FRONT WHEEL BRAKES. DIAGRAM ANNOTATIONS: FACE OF SHOE 12.15 CAM TO PIVOT 30° 112° 38° A.C.L 4-12-23 | ||