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).
Issues with rear braking, brake drums, and hand brake adjustment, including proposed modifications.
| Identifier | ExFiles\Box 91\3\ scan0226 | |
| Date | 14th November 1935 | |
| ( I2 ) With two pints of oil, the maximum temperature reached was 109°c with an air temperature of 3°c. With four pints of oil the maximum temperature reached was 114°c with an air temperature of 11°c, average speeds approximately the same in both cases. REAR BRAKING. LOP G 83066 NS{Norman Scott} 4041 STEEL BRAKE SHOES. REAR HUB. LOP G 81902 G 81903/4 BRAKE DRUMS G 83008. The rear braking has been effecient, no undue wear of the brake linings has taken place. We experienced trouble with the foot and hand brakes stricking, causing the brakes to rub due to the crank lever needle bearings situated on the anchorage plate becoming jammed with dirt and rust. This occurred with the previous car. We made a modification to the needle bearings to try to keep out water and dirt. We found the needle rollers solid with dirt inside the bearings. The needles were being attacked either with rust or chemical action, the surface being eaten away. Our modification is, the fitting of a felt washer either side the lever, a steel washer on the top of the felt for the needles, the needles having been shortened to allow for this. The bearings were packed with a special propeller shaft grease which should require no attention. We had no further sticking of the crank lever during several days of atrocious weather, the parts being thickly coated with sludge. We have since received a modification E.I/HP. 14.11.35. to the effect that the oilite bushes were to be tried N.SCH.4653. BRAKE DRUMS. Pieces were broken out of the edge of the drums owing to the drums fouling the battery cross member LEC 4148, bolts protruding outside the frame. The drums hit the bolts on maximum bump. This generally occurred when cornering, the wheel in the gutter stricking pot holes. The drums had also fouled the frame under similar conditions. The bolts of the cross member were protruding approximately .125 beyond the nut. The water excluders had not entirely kept the water out, there were signs of it having entered. The drum had fouled the water excluder on the inner recess. The drums were slightly scored. HAND BRAKE. We endeavoured to adjust the hand brakes, but after trying two hours to adjust one, in an inaccessible position, we gave it up. The adjustment we obtained was either 5/8 lever movement (too much) or 1/8 movement (too little). FRONT BRAKES. LOP G 83066 NS{Norman Scott} 4380 FRONT HUB LOP G81763 BRAKE DRUMS G 83106 STEEL BRAKE SHOES G83026 STRONGER PULL OF SPRINGS G81813 7LBS. The front braking was effecient and no undue wear of the brake linings took place. The O.S. front brake towards the finish of [Handwritten note in margin: Martindale] | ||