Analysis of internal glycol leaks and bearing failures in returned Merlin and X engines.
| Identifier | ExFiles\Box 141\2\ scan0234 | |
| Date | 31th May 1940 | |
| MERLIN(Aero Engine) III IV AND X ENGINES RETURNED FOR SERVICE I.E. 380 BLOCKS OF 190 ENGS BLOCKS TESTED FOR INTERNAL GLYCOL LEAKS. TOP JOINTS UNSHROUDED RIBBED LINERS 90 BLOCKS AVER HRS 145 CHART: 4 BLOCKS .010" SHROUDED RIBBED LINERS 210 BLOCKS AVER HRS 103 CHART: 18 BLOCKS .020" SHROUDED RIBBED LINERS MOD 64. 28 BLOCKS AVER HRS 161 LEAKS CHART: 1 BLOCK .010" SHROUDED RIBLESS LINERS MOD 114 44 BLOCKS CHART: NONE .030" SHROUDED RIBLESS LINERS MOD 136. 8 BLOCKS. CHART: NONE BEARINGS OF 202 ENGINES EXAMINED MAIN BEARINGS 1/2% SILVER PARTIAL FAILURE AVER HRS 149 CHART: 83 ENGS TOTAL FAILURE AVER HRS 148 CHART: 2 1% TIN PARTIAL FAILURE AVER HRS 23 CHART: 1 TOTAL FAILURE AVER HRS 36 CHART: 3 CONNECTING RODS PARTIAL BEARING FAILURE AVER HRS 172 CHART: 9 TOTAL FAILURE AVER HRS 104 CHART: 15 L/G.W.H. | ||
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).