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).
Blueprint showing experiments and a proposal to cure 'servo clank' in a braking system.
| Identifier | WestWitteringFiles\T\2July1929-December1929\ Scan089 | |
| Date | 15th October 1929 guessed | |
| S.K. 346. I STANDARD NORMAL MOVEMENT TO APPLY REAR BRAKES IS SLIGHTLY LESS THAN MOVEMENT TO APPLY FRONT. i.e. CENTRE OF ROTATION OF T LEVER IS AT POINT A.{Mr Adams} CLANK OCCURS. BY SETTING UP FRONT BRAKES CLOSER THAN REAR, CENTRE OF ROTATION IS SHIFTED TO B & CLANK IS TEMPORARILY CURED. To REAR BRAKES. PIVOT 3.925 To FRONT BRAKES II FIRST EXP: LENGTH OF SUSPENSION ARM WAS NOT ALTERED. WITH FRONT BRAKES 1 NOTCH LOOSE REAR BRAKE STANDARD, CENTRE OF ROTATION OF T LEVER IS ABOUT AT C, 1" ABOVE NORMAL PIVOT CENTRE. WITH PIVOT AS SHOWN BRAKES DO NOT CLANK. PIVOT 2.750 5.100 1.000 III SECOND EXP: BELIEVE THIS WILL CURE CLANKING UNDER ALL PRACTICAL CONDITIONS. 1.750 6.100 IV PROPOSAL. FRONT STOP BOUND TO CLOSE BEFORE REAR WHATEVER THE SETTING. CLANK CANNOT OCCUR. RATIO OF BRAKING FRONT & REAR UNALTERED. 7.850 5.800 SERVO CLANK. S.K. 346. | ||