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 proposal for chassis valves to overcome exhaust valve failures.
| Identifier | ExFiles\Box 35\3\ scan 048 | |
| Date | 16th August 1923 | |
| R.R. 755 (10M) (SL 72 18-7-23) MP 274954e. X2764 COMPLETED 31.8.23 STANDARDISATION of CHASSIS PARTS. Date 16.8.23. X No. 2764 Description of Parts: VALVES. Origin: To overcome exhaust valve failures. Experimental Test Report: See report Hs{Lord Ernest Hives - Chair}1/LG15.8.23. Our recommendation is to revert to the pre-war shape of valve and angle of seating but to retain present material. Road Test Report: F.R. All pre-war cars fitted with these valves. [Checkbox with X] A Scrap and replace at all costs, including Chassis already delivered to customers. [Checkbox] B Scrap and replace on Chassis in works. [Checkbox] C Scrap present stock and replace on all Chassis not yet handed to test. [Checkbox] D Use existing stock Alteration effective on future Chassis. Weight of Old Part. Cost of Old Part. Weight of New Part. Cost of New Part. Difference per Car. Difference per Car note: made in production quantities there will be no difference in cost. Cost of Parts in Works which will be scrapped if commenced on:- see memo. attc. Series... Series... Series... Signature of Mr. De LOOZE that above is correct. Mv/JW. 23.8.23. SIGNATURES | DATE | REMARKS MR. JOHNSON | | MR. B. JOHNSON | 30.8.23 | Agreed H.{Arthur M. Hanbury - Head Complaints} No scrap see Hs{Lord Ernest Hives - Chair}1/LG31-8-23 MR. ROYCE | 27.8.23 | Agreed. FHR. Valve heads should be modified to agree to recent improved standard practice i.e. head only slightly larger than seat and less sharp. Edge to valve. MR. WORMALD | 16.8.23 | Agreed. Wor.{Arthur Wormald - General Works Manager} MR. ROWLEDGE | 20.8.23 | Agreed. Rg.{Mr Rowledge} MR. DAY | 18.8.23 | Agreed. Da.{Bernard Day - Chassis Design} MR. BAILEY | 16.8.23 | Agreed. BY.{R.W. Bailey - Chief Engineer} MR. PLATFORD | 16.8.23 | Agreed - note Hm.{Capt. W. Hallam - Head Repairs} point re. allowance for truing up and re-grinding. EP.{G. Eric Platford - Chief Quality Engineer} MR. ELLIOTT | 27.8.23 | Agreed. E.{Mr Elliott - Chief Engineer} MR. NORTHEY | 20.8.23 | Agreed - but am not aware of any cases of failure arising from this. PN.{Mr Northey} MR. HIVES | 29/8/23 | Agreed EHives STAMPS: RECEIVED, CHASSIS, F.R. | ||