Standardisation of brake linings for the 40/50 HP model to reduce squeaking.
| Identifier | ExFiles\Box 12\5\ 05-page056 | |
| Date | 24th August 1928 | |
| RR 785 REVISED (10H) (D.C. 777 - 29 - 2 - 28) M C. L.TD COMPLETED 2.10.28 STANDARDISATION of CHASSIS PARTS. Description of Parts. BRAKE LININGS. 40/50 HP. Origin. To reduce squeaking brakes. Experimental Test Report. We have been trying various brake linings for several years. We believe Tenoid will give equal wearing qualities with less squeaks and more consistent braking. Road Test Report. Run 7000 miles on 12-KX (2500 miles in France). & 4,000 miles on 8-EX. We propose to try a small quantity on production before adopting this material extensively. X No. 4466 Drawing No. 7420 Part List A Scrap and replace at all costs, including Chassis already delivered to Customers. B Scrap and replace on Chassis in Works. C Scrap present stock and replace on all Chassis not yet handed to test. D Use existing stock Alteration effective on future Chassis. Cost of Parts in Works which will be scrapped if commenced on:- Series.........£....... Series.........£....... Series.........£....... Weight of Old Part. Cost of Old Part. £ 2. 0. 8d. Weight of New Part. Cost of New Part. £ 1. 8. 4d. Wor. {Arthur Wormald - General Works Manager} Difference per Car. Difference per Car. £ 12. 4d. decrease. Signature from Cost Dept. that above is correct. G {Mr Griffiths - Chief Accountant / Mr Gnapp} /Rb. {R. Bowen} 27.9.28 G. {Mr Griffiths - Chief Accountant / Mr Gnapp} INITIAL | DATE | REMARKS BJ. | 2.10.28 | Agreed. B.J. R. {Sir Henry Royce} | 28.8.28 | Agreed. FHR: Be very certain not to adopt something that will not give good wearing qualities: better to have squeaks than frequent adjustment and repairs WOR. {Arthur Wormald - General Works Manager} | 28.8.28 | Agreed - a small quantity. WOR. {Arthur Wormald - General Works Manager} RG. {Mr Rowledge} | 27.8.28 | Agreed. RG. {Mr Rowledge} DA. {Bernard Day - Chassis Design} | 27.8.28 | Agreed. DA. {Bernard Day - Chassis Design} BY. {R.W. Bailey - Chief Engineer} | 27.8.28 | Agreed. BY. {R.W. Bailey - Chief Engineer} EP. {G. Eric Platford - Chief Quality Engineer} | 27.8.28 | Agreed - as well as small quantity for production suggest used on all trials cars and company's cars to get quick comparative results. EP. {G. Eric Platford - Chief Quality Engineer} E. {Mr Elliott - Chief Engineer} | 30.8.28 | Agreed. E. {Mr Elliott - Chief Engineer} PN. {Mr Northey} | 27.8.28 | Agreed when this material has sufficiently proved itself. PN. {Mr Northey} Hs. {Lord Ernest Hives - Chair} | 24.8.28 | Agreed. Hs. {Lord Ernest Hives - Chair} | ||
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).