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).
Examination of Girling brakes on a Bentley, identifying issues and required modifications.
| Identifier | ExFiles\Box 85\1\ scan0248 | |
| Date | 14th November 1936 | |
| 206 Rm.{William Robotham - Chief Engineer} from E.{Mr Elliott - Chief Engineer} E.2/HP.14.11.36. c. Sg.{Arthur F. Sidgreaves - MD} Hs.{Lord Ernest Hives - Chair} Da.{Bernard Day - Chassis Design} Rm{William Robotham - Chief Engineer}/AFM.{Anthony F. Martindale} EV.{Ivan Evernden - coachwork} Hdy.{William Hardy} Girling Brakes on Bentley. We have made an examination of 1-B-IV, which has been equipped with Girling brakes, and also a brief trial on the road. There is no doubt that these brakes have a nice feeling owing to the absence of sponginess and their responsiveness to various degrees of pedal pressure. As a result of the examination the following are the points which appear to require attention to bring this system up to production standard:- (1) The transverse brake rods on the front axle have been got in by removing the lubricators on the ends of the axle control anchorage. This requires a modification to the scheme of oil feed. 1-B-IV has been provided with an oil hole to carry on with. The brake rods themselves are at present rubbing on the anchorage ends but these latter would be shortened by the required modification. (2) The clearance from the differential link on the front axle to the radiator suspension is only 1.2 and the buffer clearance to uncompressed rubber is 1.05. Although the differential link has not hit the radiator suspension on 1-B-IV up to the moment there is a definite danger of this as the rubber buffers will compress about 1/2" under full bump conditions. We have asked Rm{William Robotham - Chief Engineer}/AFM{Anthony F. Martindale} to test this on the road, and in the meantime we are looking into the question of arranging more clearance. (3) The transverse brake rods are rubbing on the front axle itself on full lock, but this will be cleared with the use of a modified front axle having the ends set back. | ||