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).
Oil consumption tests on a Bentley unit and C.14 (20/25) unit following modifications.
| Identifier | ExFiles\Box 132\4\ scan0009 | |
| Date | 2nd November 1934 | |
| Hs{Lord Ernest Hives - Chair}/Rtms.15/KW.2.11.34. With the engine standard in every way before modification to the connecting rods we obtained an oil consumption of 1.975 pints/hour at 4000 r.p.m. on a Bentley unit. With the rods modified the oil consumption was found to be 1.950 pints/hour, which is, as will be seen, for all practical purposes approximately the same. We have also, since carrying out the above tests on Bentley, applied this scheme to C.14 (20/25) unit, and also run comparative oil consumption tests with and without the scheme in operation. In this case the test was run at 3000 r.p.m. and the consumption figures were :- (1) Without the scheme (normal engine) - .500 pints/hour. (2) With the scheme applied .525 pints/hour. Attached are sketches B.V.28, 51 & 52 showing the modifications carried out during the experiments. Hs{Lord Ernest Hives - Chair}/R.Matthews. | ||