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 report for an ignition governor oil relay piston using metal packing rings.
| Identifier | ExFiles\Box 172\3\ img095 | |
| Date | 23th September 1926 | |
| RR 755 (10M) (DB{Donald Bastow - Suspensions}130 12-9-24) MS 301225 ORIGINAL COMPLETED 20.10.26 STANDARDISATION of CHASSIS PARTS. Date 23.9.26 X No. 7685 Drawing No. 2242/44. Part L.O.P. List E.{Mr Elliott - Chief Engineer} 74694 Description of Parts: IGNITION GOVERNOR OIL RELAY PISTON USING METAL PACKING RINGS. Origin: To obtain more sensitive ignition control and lessen detonation. To work with less oil pressure. Experimental Test Report. This was improved to overcome sluggishness in action to retard ignition in ratio of engine speed and to operate with less oil pressure. Road Test Report. Fitted to 12-EX and ran 10,000 miles in France. With ignition levers set full advance the timing was set to 170 B.T.D.C., this gave the best results. The governor was sensitive throughout the test. Detonations were considerably reduced. It was a considerable improvement over the present standard fitting. FINAL A [Ticked] 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. £2. 6. 10d. Cost of New Part. £2. 14. 10d. Difference per Car. £ 8. 0d. 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/Rb.{R. Bowen} 16.10.26. SIGNATURES | DATE | REMARKS --- | --- | --- XXXXXXXXX O.W.B. | 24.9.26 | Agreed. CWB. MR. B. JOHNSON | 20.10.26 | Agreed. BJ. Presume 'D'. MR. ROYCE | 25/9/26 | 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 | 27/9/26 | Agreed DA{Bernard Day - Chassis Design} 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 | 27/9/26 | Agreed OE MR. NORTHEY | 1.10.26 | Agreed. PN.{Mr Northey} MR. HIVES | 23.9.26 | Agreed. Hs.{Lord Ernest Hives - Chair} | ||