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).
Issues with white metal on aero engines and the comparative benefits of using brass bushes.
| Identifier | ExFiles\Box 35\2\ scan 049 | |
| Date | 26th April 1917 | |
| -2- EH1/LG7219. Contd. Oil groove. With the very best supervision and inspection we are frequently on aero engines having epidemics of the white metal leaving the steel. All the white metalling done in America has had to be done again. We never had the least signs of this trouble when we used brasses on the cars. Even if the white metal operation is done successfully there is still a possibility of the rod not being bored true, consequent ly , when it is bedded to the crankshaft it would have to be stretched. (2) I f a bearing metal melts and runs out when white metal in brass bushes is used, the brass bushes always save the crankshaft from being scored and destroyed, and if the white metal runs out and the steel rod comes in contact with the crankshaft, it, as a rule, means the crankshaft is badly scored if not destroyed. EH. | ||