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).
Strip examination report on the condition of a Bentley 80 No. 1 Unit engine.
| Identifier | ExFiles\Box 124\1\ scan0007 | |
| Date | 6th March 1939 | |
| 1044 To Rm.{William Robotham - Chief Engineer} from HPS{Horace Percy Smith - Experimental Factory Mgr}/EW. c. to By.{R.W. Bailey - Chief Engineer} c. to Da.{Bernard Day - Chassis Design} c. to Rm{William Robotham - Chief Engineer}/Swdl{Len H. Swindell} BENTLEY 80 No. 1 UNIT. Herewith a summary of the strip examination on the above unit in accordance with HPS{Horace Percy Smith - Experimental Factory Mgr}/WSC.{W. S. Cassel}8/BA.27.2.39 :- Crankcase & Bearings. LOP.EB.4248. The crankcase and bearing caps have been chalk tested for cracks and are in satisfactory condition, generally. The general condition of the Vandervell main bearings is good; the whitemetal in No.8 case-half is slightly cracked near the front end of the bore, as shown on the attached photograph. Very small cracks, similar to that in No.8 were apparent after chalk test in the bores of Nos. 4 and 8 cap-halves. In the bore of No. 9 case-half bearing, the whitemetal is showing a tendency to build up in the relieved location-tab section. Crankshaft. LOP.EB.4121. The crankshaft has been magnetically tested for cracks and is in good condition generally. Connecting Rod. LOP.EB.4313. The connecting rods and caps have been magnetically tested for cracks and are in satisfactory condition. The condition of the big-end bearings is good, with the exception of a rather deep circumferential score at the centre of the bore of No. 3. Pistons. LOP.EB.4318. The pistons have been chalk-tested for cracks and apart from minor scores on the skirts are in good condition. The gudgeon pins are free from cracks and neither the piston rings nor the grooves show signs of unreasonable wear. continued. | ||