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).
Comparing brake and lining wear on three different car models fitted with hydraulic front and Girling rear systems.
| Identifier | ExFiles\Box 141\2\ scan0320 | |
| Date | 23th January 1940 | |
| 1180 1029 To Rm{William Robotham - Chief Engineer}/MHR.{M. H. Rigby} c. to Rm{William Robotham - Chief Engineer}/AFM.{Anthony F. Martindale} Rm{William Robotham - Chief Engineer}/RD6/JH.23.1.40. Brakes & lining wear. In the attached lists we shew the brake lining wear of 11.B.V. 33.G.VII and 12.B.V. these cars are all fitted up with Hydraulic front and Girling rear systems. Of the 3 cars the brakes on 12.B.V. are the best, both in action and for proportional wear, in fact this car makes a good standard for efficiency. 11.B.V. for effectiveness comes second, although we have had troubles with the system on this car we now hope for some consecutive results as our last check after dismantling and greasing the Girling wedges and pins shewed 1 notch adjustment per drum front and rear for 1,934 miles, the reduced amount of wear may be due to icy road conditions, but never the less the proportions are better and a careful check will be maintained. 33.G.VII. This car is the heaviest of our range and is fitted with alum drums all round. We have always thought that this car could do with more front braking, and proportional wear seems to confirm this. Rm{William Robotham - Chief Engineer}/FD.{Frank Dodd - Bodies} | ||