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).
Tests concerning the lubrication of the 40/50 model's clutch spigot.
| Identifier | WestWitteringFiles\J\March1923\ Scan13 | |
| Date | 3rd March 1923 | |
| To R.{Sir Henry Royce} from Hs.{Lord Ernest Hives - Chair} c.c. to CJ. c.c. to E.{Mr Elliott - Chief Engineer} c.c. to Ds. c.c. to EP.{G. Eric Platford - Chief Quality Engineer} c.c. to BY.{R.W. Bailey - Chief Engineer} ORIGINAL. H29/LGS.3.23. IOOT. X872 X3439 X354 40/50 LUBRICATION OF CLUTCH SPIGOT. We have continued our tests to prove whether we can recommend we dispense with the present automatic lubrication for the clutch spigot as we understand has been done by Springfield. We have not been able, by any means, to make certain that the oil in the clutch will run down the face of the flywheel and lubricate the spigot when the engine is stopped. During the tests, we have had the maximum amount of oil in the clutch that would not effect the clutch stopping. The small quantity of oil which runs down the face of the flywheel when the engine stops and reaches the clutch thrust race, runs round the outside of the thrust race and drains into the bottom of the clutch. We have tried modifying the thrust race in order to try and entice the oil to get on to the spigot, but without success. At one time during our tests, we found that the oil was getting on to the clutch spigot. We afterwards proved however, that this was due to the manner in which the oil was syringed into the clutch. If the oil is syringed in in such a manner that it swamps the thrust race with oil, the oil will get on to the spigot. If, on the other hand, the oil is syringed into the bottom of the clutch, or put in when the flywheel is revolving, no oil will get on to the spigot. contd:- | ||