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 soft copper washer to replace the rubber washer in the existing radiator cap.
| Identifier | ExFiles\Box 16\2\ Scan072 | |
| Date | 23th September 1932 | |
| RR 785 (10H) (30405. 21-4-32) BM. S/6352/4. X7250 COMPLETED 16.1.33 STANDARDISATION of CHASSIS PARTS. Description of Parts. SOFT COPPER WASHER EXPANDED INTO EXISTING RADIATOR CAP TO REPLACE RUBBER WASHER. Origin. The rubber washer swells and in some cases prevents the operation of the pressure valve. In a state the radiator is liable to burst when the water boils. Experimental Test Report. Copper washers are now fitted to 19-EX, 20-EX, 22-EX, and 25-EX. cars. In all cases the caps appear to be satisfactory. Road Test Report. No water leaks on to the top of the radiator under road conditions. [STAMP: 29/125 H.P. CHASSIS.] Weight of Old Part. --- Weight of New Part. --- Difference per Car. --- Cost of Old Part. £ --- Cost of New Part. £ --- Difference per Car. £ Negligible. Cost of Parts in Works which will be scrapped if commenced on:- Series.........£....... Series.........£....... Series.........£....... Signature from Cost Dept. that above is correct. C/RB.{R. Bowen}9.1.33.G.11.1.33. WOR.{Arthur Wormald - General Works Manager} X No. 5250 No. 7250 Drawing No. Part List INITIAL | DATE | REMARKS SG.{Arthur F. Sidgreaves - MD} | 13.1.33. | Agreed Sg.{Arthur F. Sidgreaves - MD} R.{Sir Henry Royce} | 1.10.32 | Agreed FHR. WOR.{Arthur Wormald - General Works Manager} | 25.9.32. | Agreed Wor.{Arthur Wormald - General Works Manager} C. | 26.9.32. | Agreed C. RG.{Mr Rowledge} | 26.9.32. | Agreed Rg.{Mr Rowledge} DA.{Bernard Day - Chassis Design} | 26.9.32. | Agreed Da.{Bernard Day - Chassis Design} BY.{R.W. Bailey - Chief Engineer} | 28.9.32. | Agreed By.{R.W. Bailey - Chief Engineer} EP.{G. Eric Platford - Chief Quality Engineer} | 26.9.32. | Agreed EP{G. Eric Platford - Chief Quality Engineer} & Mx.{John H Maddocks - Chief Proving Officer} E.{Mr Elliott - Chief Engineer} | 26.9.32 | Agreed AE. Tests should be continued to make sure that radiator caps do not shake PN.{Mr Northey} | 5.10.32. | Agreed PN.{Mr Northey} loose under worse condition on road HS.{Lord Ernest Hives - Chair} | | Agreed HS.{Lord Ernest Hives - Chair} due to elasticity in washer. | ||