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).
Solution to fix elusive gudgeon pin knocks at low engine speeds.
| Identifier | ExFiles\Box 35\2\ scan 237 | |
| Date | 27th September 1920 | |
| X2448 To R.{Sir Henry Royce} from Hs.{Lord Ernest Hives - Chair} c. to CJ. c. to Bn.{W.O. Bentley / Mr Barrington} c. to E.{Mr Elliott - Chief Engineer} c. to Da.{Bernard Day - Chassis Design} c. to By.{R.W. Bailey - Chief Engineer} c. to EP.{G. Eric Platford - Chief Quality Engineer} c. to EWT. for R.R. Inc. X.419D. RE - ELUSIVE GUDGEON PIN KNOCKS. X.2748. We anticipate that we shall receive complaints from customers with reference to the knock which we sometimes get on our engines from the dug gudgeon pin in the piston. We have had some complaints already - so far, the cars in question have been - Drivers' Instruction Car. Mr. Chichester's Inspection Car. Mr. Johnson's Car. Lrd Lee's Car. On each of these cars we have overcome the complaint by fixing a spring under the gudgeon pin locking screw as shown below:- The feature about this knock is the fact that it is only there when the engine is running at very slow speeds Contd. | ||