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).
Experimental department running data logging cylinder wear measurements.
| Identifier | ExFiles\Box 132\5\ scan0159 | |
| Date | 30th May 1941 | |
| Rm.{William Robotham - Chief Engineer}2/ST.30.5.41 - 2 - ROLLS-ROYCE EXPERIMENTAL DEPARTMENT RUNNING CAR MILEAGE CYLINDER WEAR WORST FIGURES MEAN WEAR REMARKS 1 2 3 4 5 6 Thous/ 1000miles ----------------------------------------------------------------------------------------------------------------------------------------------------- 75 mm. Bores Ripplet. 3.25 Bores 12.B.V. 34,666 .0044 .0036 .0037 .005 .0055 .008 .000145 Phos. Chrome - Dry Liners - Holes in Rod. 1.R.1. 11,998 .0039 .0034 .0036 .0040 .0041 .0063 Ni. Cr.{Mr Cra???ster / Mr Chichester} Mol. - Holes in rods. 3.500 Bores 3.B.50. 22,500 .0061 .0037 .0002 .0001 .002 .0025 1 & 2 Std. 3 & 4 Hichrome. 5 & 6 Brivadium. Holes blanked off. Oil Consumption. 9.B.V. 11,656 .0008 .0022 .0003 .0023 .0005 .0034 1 3 & 5 Cr.{Mr Cra???ster / Mr Chichester} Plated New.Standard New pistons fitted and oil hole opened up in rods after 11,656 miles. 1st measure 1266 1.B.50 Lorry B.22.AW 19,931 .0021 .0017 .0024 .0016 .0018 .0031 .000106 Standard Bores. Lp{Mr Lappin}'s B.V. 8.B.V. Rebored Feb, 1941. Three bores short Cr.{Mr Cra???ster / Mr Chichester} Oil holes in rod opened up. Then holes in rods blanked up. 10.B.V. WXA.1 Sg.{Arthur F. Sidgreaves - MD} 10,025 .0015 .0012 .0007 .0018 .0008 .0013 1 & 2 Std. 3 & 4 Ni.Cro.Mo. 255 Brinell, 5 & 6 Ph.Cr.{Mr Cra???ster / Mr Chichester} Centre Cast. Brinell 245. 25.G.VI 13,972 .0003 .0004 .0003 .0003 .0002 .0004 .0000230 Short Chromium Plate. 39,266 .0035 .0025 .0030 .0035 .004 .0045 .000090 | ||