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).
Cylinder block wear measurements for various chassis, listed in order of mileage.
| Identifier | ExFiles\Box 103\2\ scan0052 | |
| Date | 26th January 1939 | |
| To By.{R.W. Bailey - Chief Engineer} From K.{Mr Kilner} Rm{William Robotham - Chief Engineer}/G.H. W/Kingsbury. 26th: January '39. We have not had the opportunity of measuring a sufficient number of chassis fitted with E.B.3151 piston, to enable us to give records of cylinder wear figures taken over 20,000 miles and below, we give a complete list of all the cylinder blocks we have measured in the order of mileage run, and the wear figure is an average over the six bores. -------------------------------------------------------------------------- B.149 K.U. 21283 .005" B. 4 M.R. 10069 .003" B.112 L.S. 20815 .0035" B. 38 L.S. 9955 .0035" B.167 K.U. 18111 .004" B.142 L.S. 9803 .002" B.158 L.S. 14539 .003" B.190 L.S. 9766 .0035" .142 L.S. 14448 .0025" B.121 K.U. 9381 .004" 33 K.U. 13995 .0025" B. 97 K.U. 9130 .003" B.165 K.U. 13477 .0025" B.131 K.U. 9119 .0035" B. 65 K.U. 13184 .004" B.184 L.S. 8971 .002" ø B. 44 L.S. 13145 .0075" B.101 K.U. 8494 .0025" B. 32 L.S. 12605 .0035" B. 96 L.S. 8352 .003" B.195 K.U. 12603 .0035" B.112 L.S. 8231 .0015" B.169 K.U. 12349 .0025" B.114 L.S. 8057 .002" B.115 K.U. 11833 .003" B.111 K.U. 7956 .002" B.55 K.U. 11531 .002" B. 43 K.U. 7632 .002" B. 53 K.U. 11524 .002" B. 86 L.S. 7278 .004" B. 21 K.U. 11509 .0025" B. 95 K.U. 6882 .0025" B.187 K.U. 11274 .0025" B. 70 L.S. 6834 .003" B.149 K.U. 11218 .004" B. 25 K.U. 6500 .0025" B.118 L.S. 11083 .003" B. 68 L.S. 6348 .0025" B.173 K.U. 10920 .0045" B. 17 I.E. 5882 .002" B. 2 L.S. 10644 .002" B.136 L.S. 5786 .002" B. 26 L.S. 10309 .004" B. 97 K.U. 5396 .0025" B. 16 L.S. 10257 .003" B.121 K.U. 5223 .002" B. 128 L.S. 10208 .0025" B.165 K.U. 4026 .0025" B. 42 L.S. 10205 .0045" B.159 K.U. 3682 .002" ø Owing to excessive wear this chassis was fitted with a replacement cylinder block. -------------------------------------------------------------------------- PK/KG/FED. | ||