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).
Alteration to the bottom washer for valve springs to improve oil drainage and spring location.
| Identifier | ExFiles\Box 171\1\ img044 | |
| Date | 24th September 1926 | |
| RR 288A (10M) (SL 72 18-7-23) MP 27494A ORIGINAL. COMPLETED 19.10.26 40/50 HP. CHASSIS. (written above a struck-through 'AERO ENGINE PARTS.') ALTERATIONS TO R.R. AERO ENGINE PARTS. ('AERO ENGINE PARTS.' is struck through) [STAMP: CONDOR EAGLE FALCON HAWK] Description of Parts: BOTTOM WASHER FOR VALVE SPRINGS. Origin: Better spring location, less dia. hole at top for preventing oil draining in, sloping top for improved oil drainage. Experimental Test Report: 10,000 miles in France fitted to 12-EX. There was no sign of excess oil getting down valve guides. Spigot retained springs more firmly. DATE: 24.9.26 X No. 7060 Drawing No. E.74814/5 Part List: Sch. 740 Difference in weight. "C" - Scrap present stock and replace on all engines not yet handed to test. Signature of Expl. Dept. that above is correct Weight of Old Part Cost of Old Part: £ 3. 8d. Weight of New Part Cost of New Part: £ 5. 11d. Difference per Engine: £ 2. 3d. increase. Cost of Parts in Works and Stores which will be scrapped if commenced on:-- Signature of Mr. De LOOZE that above is correct My/Ro.{C. C. Rose - Export Manager} 4.10.26 SIGNATURES | DATE | REMARKS --- | --- | --- [REDACTED] C.W.B. | 25.9.26 | Agreed. CWB. MR. B. JOHNSON | 18.10.26 | Agreed. B.Johnson. MR. ROYCE | 1/10/26 | Agreed FHR MR. WORMALD | 24.9.26 | Agreed. Wor.{Arthur Wormald - General Works Manager} MR. ROWLEDGE | 27.9.26 | Agreed. Rg.{Mr Rowledge} MR. DAY | 1/10/26 | Agreed DR MR. BAILEY | 11.10.26 | Agreed. BY.{R.W. Bailey - Chief Engineer} MR. PLATFORD | 27.9.26 | Agreed. EP.{G. Eric Platford - Chief Quality Engineer} MR. ELLIOTT | 1/10/26 | Agreed AE MR. HIVES | 24.9.26 | Agreed. Hs.{Lord Ernest Hives - Chair} MR. NORTHEY. | 29.9.26 | Agreed. PN.{Mr Northey} [LARGE GREEN STAMP: PHANTOM] | ||