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).
Instructions diagnosing a mechanical noise fault in a Smith Dynamo Type 2D when hot.
| Identifier | ExFiles\Box 3\5\ 05-page152 | |
| Date | 13th February 1922 | |
| R.R.236 (500 Bks.) (S.F. 193. 6. 13.) M.P. [11281] 152 X.295 ROLLS-ROYCE LIMITED. INSTRUCTIONS. To: Mr Clark 13/2/22 Order No: X.295. Customer's No: --- Smith Dynamo Type 2D We have run this dynamo on the bench. It is very noisy at all speeds, electrically & mechanically. The mechanical noise comes from the armature which fouls on the pole pieces of the dynamo when the machine is hot. The cause is probably due to expansion of the armature & magnetic pull as the grinding can be stopped. Contd Signed This Sheet must be filed on completion of the work. | ||