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).
Proposals to resolve squeaking brakes and suggesting modifications to brake levers and joints.
| Identifier | ExFiles\Box 5\3\ 03-page057 | |
| Date | 10th May 1922 | |
| To BY.{R.W. Bailey - Chief Engineer} from Da.{Bernard Day - Chassis Design} c. to CJ. c. to Wor.{Arthur Wormald - General Works Manager} c. to HS.{Lord Ernest Hives - Chair} X.4257. Da{Bernard Day - Chassis Design}7/110.5.22. GOSHAWK 11. SQUEAKING BRAKES ETC. X.4257. We send herewith M.sch.1271 shewing proposals for damping out the brake squeaks. That shewn at fig.1. is Mr. Royce's new shaped aluminium ring with rivets between the brake shoews. Before this proposal is abandoned it should be tried with a ferodo liner underneath the ring. In the event of figs. 1 and 2, which we understand from BY2/PS.4.22. is likely to be more effective, should be investigated. Of the 2 proposals of fig. 1, and fig. 2, we think that fig.1 might prove the more effective mud flinger, but fig.2 may be sufficiently effective in that respect, is cheaper and simpler and is generally preferred. We also shew the brake levers on the camshafts keyed and clamped to the shaft instead of pinned as now. Though we understand there has been no trouble with the pinned levers, we think it is a less reliable arrangement than keys and clamps, which we therefore suggest should be tried. Referring to the joints between this lever and the brake rod, according to the Derby drawings we have here, joints of the ferrule type are used though we have a recollection that Mr. Royce desired ferrule type to be used only for the joints on the steel cables, and that these joints should be of the simple pin type used on the differential levers. We should be much obliged if you would confirm that ferrule joints are being used in this position. Da.{Bernard Day - Chassis Design} | ||