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 report for a front brake drum damper to reduce squeaking brakes.
| Identifier | ExFiles\Box 12\5\ 05-page172 | |
| Date | 28th September 1929 | |
| RR 755 REVISED (10H) (OF 687 4-1-29) BM. 2/5943. X7420 COMPLETED 23.12.29. STANDARDISATION of CHASSIS PARTS. Date 28.9.29. Description of Parts. FRONT BRAKE DRUM DAMPER. Origin. To reduce squeaking brakes. Experimental Test Report. We find that we get better results with the new brake lining if we use the damping springs only on the drums, retained by light clips. Road Test Report. Run on 19, 20, 21 & 22-EX. and tried on a number of test cars. Stamp: J.S. RECEIVED 19 DEC 1929 Weight of Old Part. Weight of New Part. Difference per Car. Cost of Old Part. £2-8-4 Cost of New Part. £2-4-4 Difference per Car. £0-4-0 Decrease Signature from Cost Dept. that above is correct. GRL 10/10/29 Right Box: X No. 7420 (4612 is struck through) Drawing No. 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.....£..... Approval Table: INITIAL, DATE, REMARKS EXX Sg.{Arthur F. Sidgreaves - MD}, 14-12-29, Agreed Sg{Arthur F. Sidgreaves - MD} R.{Sir Henry Royce}, 4.10.29, Agreed FHR. WOR.{Arthur Wormald - General Works Manager}, 30.9.29, Agreed Wor.{Arthur Wormald - General Works Manager} RG.{Mr Rowledge}, 4.10.29, Agreed Rg.{Mr Rowledge} DA.{Bernard Day - Chassis Design}, 30.9.29, Agreed Da.{Bernard Day - Chassis Design} We should like to see the actual arrangement. BY.{R.W. Bailey - Chief Engineer}, 30.9.29, Agreed By.{R.W. Bailey - Chief Engineer} EP.{G. Eric Platford - Chief Quality Engineer}, 30.9.29, Agreed. Rather anticipated - but will try some. E.{Mr Elliott - Chief Engineer}, 4.10.29, Agreed AE. PN.{Mr Northey} CWB., 30.9.29, Agreed C. HS.{Lord Ernest Hives - Chair}, 28.9.29, Agreed. | ||