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).
Standardisation of a front brake drum damper to reduce brake squeaks.
| Identifier | ExFiles\Box 120\1\ scan0004 | |
| Date | 10th December 1926 | |
| RR 755 REVISED (10H) (DE444 6-10-26) BM. STANDARDISATION of CHASSIS PARTS. COMPLETED 19.1.27 Date 10.12.26 Description of Parts. FRONT BRAKE DRUM DAMPER. Origin. To reduce brake squeaks. Experimental Test Report. With the lightened type front axle, we have found it necessary to fit dampers. These can be brought on without scrapping material. Road Test Report. We have proved that these dampers definitely reduce squeaking brakes. They will not affect the reliability of the car. X No. 8420 X4612 Drawing No. N.Sch.2298 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. Weight of Old Part. Weight of New Part. Difference per Car. Cost of Old Part. £5-1-2 Cost of New Part. £8-8-4 Difference per Car. £3-7-2 increase Signature from Cost Dept. that above is correct. Hy{Tom Haldenby - Plant Engineer} IRL 17/1/27 Cost of Parts in Works which will be scrapped if commenced on:- Series.......£....... Series.......£....... Series.......£....... INITIAL | DATE | REMARKS BJ. | 19.1.27 | Agreed. B.Johnson. R.{Sir Henry Royce} | 13.12.26 | Agreed. FHR. WOR.{Arthur Wormald - General Works Manager} | 10.12.26 | Agreed. Wor.{Arthur Wormald - General Works Manager} RG.{Mr Rowledge} | 14.12.26 | Agreed. Rg.{Mr Rowledge} DA.{Bernard Day - Chassis Design} | 13.12.26 | Agreed. Da.{Bernard Day - Chassis Design} BY.{R.W. Bailey - Chief Engineer} | 13.12.26 | Agreed. BY.{R.W. Bailey - Chief Engineer} EP.{G. Eric Platford - Chief Quality Engineer} | 11.12.26 | Agreed. EP.{G. Eric Platford - Chief Quality Engineer} If satisfied tests O.K. E.{Mr Elliott - Chief Engineer} | 14.12.26 | Agreed. E.{Mr Elliott - Chief Engineer} PN.{Mr Northey} | 15.12.26 | Agreed. PN.{Mr Northey} CWB. | 17.12.26 | Agreed. CWB. Hs.{Lord Ernest Hives - Chair} | 10.12.26 | Agreed. Hs.{Lord Ernest Hives - Chair} | ||