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(Aero Engine)(Codename for 20HP Car / Aero Engine after Kestrel(Aero Engine)) 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(Aero Engine)(Codename for 20HP Car / Aero Engine after Kestrel(Aero Engine)) 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} | ||
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).