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).
Performance, wear, and modifications of various vehicle components after mileage testing.
| Identifier | ExFiles\Box 82\2\ scan0135 | |
| Date | 1st August 1934 guessed | |
| - 4 - SERVO MOTOR LOP. GB.503. MS. 3927. Incorporating outboard ball bearing and friction linings RAD. 13 which have been remounted. The Servo has been efficient with the standard RAD. 13 linings. A slight squeak developed in the Servo when braking lightly. Servo examined showed excessive wear in the three bushes of the driving pins. They were nearly through on the side that takes the drive. The remaining features of the servo were in a good condition. PROPELLOR SHAFT. MS.3911. Incorporating shaft damper to MS.3911 friction pounage set to 4 1/2 lbs. at 17 1/2 RAD. Where there have been no over-run periods throughout the mileage. The friction load of the propellor shaft damper has remained consistent. The shaft fouled the rear cross-member on the maximum bump and rebound. The electric cable has not been further damaged since the last report. The universal joints were not checked for lubrication until 10,000 miles had been completed. Loss of grease was practically nil; the rear took .04 of a pint to fill and the front .007 of a pint. No wear could be detected in the mechanics joints. REAR HYDRAULIC DAMPERS LOP. FB.268. RR.sch.649. Incorporating Ns.{Norman Scott}4042 strengthened supports FB.1168 support plate. FB.1176 suspension link. Initial load set to 40lbs. The new type mounting of rear dampers does not show any weak features. The dampers have remained firmly attached, and have given no trouble. Dampers have remained free from knocks; connecting links ball pins well lubricated. The loss of oil during the 10,000 miles has been .02 and .04 of a pint. The loads have been consistent with the setting of the hand control. FRONT AXLE CONTROL DAMPERS LOP. FB.381. RR.sch. 649. The anchorage of dampers to frame has given no trouble; control arms ball pins well lubricated and no appreciable wear; attachement to axle remained firm. The amount of oil lost during the mileage has been:- MS. Nil. OS.; .017 of a pint. The damper loads have been consistent with the unit pressure set by the hand control. Maximum pressure has been chiefly used to keep control of the car. STEERING COLUMN AND BOX TO LOP. FB.239. RR.sch.649. LEC.3874. REVISED HORN SWITCH KNOB. SPRING FITTED TO GIVE 1 1/2 lbs. COMPRESSED .300 IN PLACE OF FB.85 SPRING 3LBS. COMPRESSED TO .300 SPECIAL STEERING WHEEL. The steering has been light for shunting, and at high speeds, readily self centered. On good surfaced roads, it has been | ||