Letter to Captain Wilks of The Rover Co. Ltd. asking for clarification on the performance and design of Girling brakes.
| Identifier | ExFiles\Box 120\3\ scan0094 | |
| Date | 12th November 1934 | |
| X4456 Exptl. Dept. Hs {Lord Ernest Hives - Chair} /Rm. {William Robotham - Chief Engineer} 27/KW. 12th November,1934. Captain Wilks, The Rover Co.Ltd., COVENTRY. Dear Captain Wilks, I wonder whether you would elucidate various points in connection with Girling brakes. We have a chassis fitted with Girling brakes except for the wedge-shaped cam which we have avoided by a system of bell crank levers ending in our usual toggle arrangement. The efficiency of the layout is only about 50%. What we should like to know is - (1) Is there any trouble with the wedge. (2) What is the best angle. (3) What is the minimum pull off spring, measured at the pull on the wedge, that is satisfactory. (4) Does not the altered bedding on adjusting the brakes give less efficient braking. Hoping you do not mind providing this information. Yours sincerely, FOR ROLLS-ROYCE LIMITED. | ||
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).