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).
Engine oil leaks, oil consumption, and water flow test results.
| Identifier | ExFiles\Box 179\3\ img081 | |
| Date | 18th March 1932 | |
| -2- The only other oil leak which was of any consequence was from the starter motor housing and this was due to crankshaft piston throw, being a poor fit. There was also a slight oil leak past the front crankshaft cover. WATER LEAKAGE. After the run all the studs securing the water pedestals were found to have bent considerably and were leaking over towards the valves. This appears to be due to rather weak studs and also to the fact that the pedestals have not got a large enough base as pointed out in our first report of 15.3.32... OIL CONSUMPTION. The total amount of oil added to engine during the run was 10 pints so that we can say that the oil consumption was approximately 1 pint/hr. This consumption appears to be quite reasonable when considering the engine speed and taking into account the leaks. SPARKING PLUGS. The sparking plugs used were K.L.G. C1 type as used on a G/S H.S. and no trouble was experienced with them. WATER FLOW TESTS. Since the trouble with the water boiling on the M type duration run we have carried out a test to determine the water flow of the engine and at the same time to determine whether the radiator restricted the flow. In place of the radiator a large tank was rigged up for cooling purposes and the big water pipe from the machine was so arranged that it could be switched from the main tank to a smaller one so that a certain weight of water could be timed. During these tests the water in the cylinder block and head did not boil so that it appears that the radiator used on the endurance run had restricted the flow somewhat. Although the water in the head did not boil we can definitely say that far too much water passes from the front of the cylinder block to cylinder stop, as there was a definite temperature rise along both the cylinder block and head. | ||