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 on bevelling the scraper piston ring to address over-oiling and smoking on Goshawk cars.
| Identifier | ExFiles\Box 172\1\ img002 | |
| Date | 15th November 1922 | |
| GOSHAWK COMPLETED 24.11.22. STANDARDISATION of CHASSIS PARTS. Date 15.11.22 X No. 4324 Description of Parts. ORIGINAL. BEVEL ON SCRAPER PISTON RING. Origin. To overcome over-oiling and smoking. Experimental Test Report. The lower ring on the piston which acts as a scraper ring is bevelled on the lower edge. We are receiving complaints of excessive smoking on the Goshawk cars. It becomes worse as they become worn. Road Test Report. Run 9500 miles on -1-G-11 successfully. Run 3500 miles on 3-G-11. " 1500 " " 7-G-11. In every case where we have used this scheme we have effected a definite improvement in oil consumption and smoking. [X] 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. Signature of Exp. Dept. that above is correct. Difference per Car. £ Negligible increase. Signature of Mr. De LOOSE that above is correct. Hy{Tom Haldenby - Plant Engineer}/JW 21.11.22. SIGNATURES, DATE, REMARKS Mr. JOHNSON, 23.11.22, Agreed. BJ. Presume no scrap. Mr. ROYCE, 16.11.22, Agree FHR but make certain as it is hardly logical. Mr. WORMALD, 16.11.22, Agreed. Wor.{Arthur Wormald - General Works Manager} Mr. ROWLEDGE, 15.11.22, Agreed. Rg.{Mr Rowledge} Mr. DAY, 16.11.22, Agreed. Da{Bernard Day - Chassis Design} Mr. BAILEY, 15.11.22, Agreed. BY.{R.W. Bailey - Chief Engineer} Mr. PLATFORD, 15.11.22, Agreed on behalf of EP{G. Eric Platford - Chief Quality Engineer} (away in U.S.A.) J.A. Maddocks. Mr. NORTHEY, 15.11.22, Agreed. PN.{Mr Northey} | ||