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 squeaking brakes.
| Identifier | ExFiles\Box 171\1\ img179 | |
| Date | 28th September 1929 | |
| RR 755 REVISED (10M) (DF 697 4-1-29) B.V. 2/5943 ORIGINAL COMPLETED 23.12.29 STANDARDISATION of CHASSIS PARTS. Date 28.9.29 Description of Parts. FRONT BRAKE DRUM DAMPER. X No. 4612 Drawing No. Part List 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. 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. Cost of Old Part. £ 2. 8. 4d. Weight of New Part. Cost of New Part. £ 2. 4. 4d. Difference per Car. Difference per Car. £ - 4. 0d. Decrease. Signature from Cost Dept. that above is correct. G/Rb{R. Bowen}18.12.29. G.{Mr Griffiths - Chief Accountant / Mr Gnapp} Wor{Arthur Wormald - General Works Manager} Cost of Parts in Works which will be scrapped if commenced on :- Series..........£....... Series..........£....... Series..........£....... INITIAL DATE REMARKS BL Sg.{Arthur F. Sidgreaves - MD} 19.12.29 Agreed Sg.{Arthur F. Sidgreaves - MD} R.{Sir Henry Royce} 4/10/29 Agreed FH Royce 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} Should like to see actual arrangement BY.{R.W. Bailey - Chief Engineer} 30.9.29 Agreed. Rather anticipated - but will try some. EP.{G. Eric Platford - Chief Quality Engineer} 30.9.29 Agreed. E.{Mr Elliott - Chief Engineer} 4/10/29 Agreed AE PN.{Mr Northey} C.B. C. 30.9.29 Agreed C. HS.{Lord Ernest Hives - Chair} 28.9.29 Agreed. | ||