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).
Proposing modifications to manage oil overflow in the Peregrine engine.
| Identifier | ExFiles\Box 149\2\ scan0059 | |
| Date | 19th July 1932 | |
| X 138. To R.{Sir Henry Royce} from E.{Mr Elliott - Chief Engineer} c. Sg.{Arthur F. Sidgreaves - MD} For. Hs.{Lord Ernest Hives - Chair} By.{R.W. Bailey - Chief Engineer} re Peregrine Oil Overflow. The overflow from the blow-off valve of the oil pump provides more oil than we require in the camshaft chamber, and more oil than we can do with at the rear end of the engine where the overflow is carried on to the timing gears. The camshaft chamber is also fed by the oil from the valve rocker gear. We are also anxious that the oil shall not pile up too much in the governor tower, and leak through on to the ignition gear. We are, therefore, suggesting that we shall tap this flow of oil as soon as possible in its career by running it over a weir and thereby preventing it building up. The best position we have found so far is shown on LeC.3141 for this feature. We must be careful to run the oil away in such a manner that it will do no harm. We have, therefore, passed it into the chamber in front of No.1. main bearing and added a feature to the front crankcase cover to convey the oil into the sump below. The height at which the oil is maintained in the vertical drive is such as to seal the tower against crankcase gasses passing up to the ignition gear. We should be glad to know if you approve of this modification. E.{Mr Elliott - Chief Engineer} | ||