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).
The performance and issues of the front axle, brakes, and rear axle.
| Identifier | ExFiles\Box 179b\3\ img381 | |
| Date | 10th May 1924 guessed | |
| - 9 - FRONT AXLE & BRAKES LOP G 10041" RR SCHEMES 141-151-185/ - 296. The front axle showed no signs of weakness. Trouble was at first experienced with the ballends of the axle control levers due to lack of lubrication and grit entering. The leather guards were not efficient covers. The bijur supply was increased to a N°3 which was found to be satisfactory. New leather covers were received and fitted. The bijur supply to the brake shafts in the axle was ample. The O.S. brake toggle shaft partially seized, the bearing clearance not being sufficient. This gave no further trouble after being eased. The bottom caps of the pivot pins with two bolts holding same is not satisfactory. The face joint becomes distorted by the frequent jolts and oil leaks out. No appreciable wear could be detected in the pivot pin bearings, lubrication was ample. Handwritten notes: Steel Shoes The Better Servo reduces direct braking which reduces sponginess which permits more movement on the Hancock brake shoes BRAKES The brakes were satisfactory as regards wear, no adjustment was necessary during the mileage. Squeaks developed. The setting of the pilot shoes to .007/.008" clearance without stronger springs is not sufficient. The brakes frequently became inefficient during the heavy rain storms through water getting on to the brakes. The brake drums remained free from scoring, but rusted up very bad during each night after the car had been washed. The water appears to eat into the metal making the surface mottled. The surface lost the high polish which is associated with this type of brake. There is no sign of the brake drums working loose on the carrier plates. REAR AXLE LOP G 101175 RR SCH 224-235 AXLE N°3 PER II 2 9 X 46 RATIO. The rear axle gave no signs of weakness. No trouble was experienced with brake actuating shafts. It was very free from oil leaks down the axle tubes. It did not become noisy, a light period was noticeable on the overrun. back lash increased in the drive, the amount will be ascertained when axle is dismantled. The bijur supply to the brake actuating shafts appeared to be sufficient from an outside examination. | ||