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 chassis parts concerning the fixing of a spring in an air valve to improve reliability.
| Identifier | ExFiles\Box 171\1\ img013 | |
| Date | 11th January 1926 | |
| RR 755 (10M) (DB{Donald Bastow - Suspensions}130 12-9-24) MS 301225 ORIGINAL COMPLETED 22.2.26. STANDARDISATION of CHASSIS PARTS. Date 11.1.26. X No. 8030 Description of Parts: FIXING OF SPRING IN AIR VALVE. Origin: To improve reliability. Experimental Test Report. It is propose to revert to the original fixing of the spring in the air valve to the top cover by means of a screw. The present arrangement of pushing the top coils into a recess is not reliable. Road Test Report. Fitted to 10-G-111 - run 12000 miles. Fitted to 10-EX - run 800 miles. A similar scheme was fitted to all Silver Ghost cars. Right side box: 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. £ 1. 4d. 20 HP. £ 1. 10d. 40/50 HP. Cost of New Part. £ 2. 0d. 20 HP. £ 2. 5d. 40/50 HP. Difference per Car. 8d. 20 HP. increase. 7d. 40/50 HP. increase. Cost of Parts in Works which will be scrapped if commenced on:- Series ...... £ ...... Series ...... £ ...... Series ...... £ ...... Signature of Mr. DE LOOZE that above is correct. My Ruls. Remarks. SIGNATURES | DATE | REMARKS MR. JOHNSON | 22.2.26 | Agreed. C. Johnson. MR. B. JOHNSON | 22.2.26 | Agreed. B.J. MR. ROYCE | 15/1/26 | Agreed F H R MR. WORMALD | 11.1.26 | Agreed. Wor.{Arthur Wormald - General Works Manager} MR. ROWLEDGE | 11.1.26 | Agreed. Rg.{Mr Rowledge} MR. DAY | 13.1.26 | Agreed. Da.{Bernard Day - Chassis Design} MR. BAILEY | 12.1.26 | Agreed. BY.{R.W. Bailey - Chief Engineer} MR. PLATFORD | 13.1.26 | Agreed, as spring clearance does not remain constant, carb. unreliable, advise retrospective action. EP.{G. Eric Platford - Chief Quality Engineer} MR. ELLIOTT | 17.2.26 | Agreed. E.{Mr Elliott - Chief Engineer} MR. NORTHEY | 13.1.26 | Agreed. PN.{Mr Northey} MR. HIVES | 19.2.26 | Agreed. E.{Mr Elliott - Chief Engineer} Hives. [Green Stamp] O.H.P. CHASSIS ACTION | ||