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).
Instruction sheet detailing the causes of magneto service failures.
| Identifier | ExFiles\Box 48\2\ Scan305 | |
| Date | 29th June 1920 | |
| RR 23A (100 BKS.) [AHDT.29-6-20.] MP 324356 ROLLS-ROYCE LTD. INSTRUCTIONS. To____________________ 19__ Order No.____________ Customer's No._____________ a low resistance path to earth for the H.T. supply. This is the only one of the three cases reported, where the insulation has actually broken down on the surface. In the other two cases the carbon-oil paste had stuck the collector brush up in its holder, and in consequence burning of the slip ring had occurred due to subsequent sparks jumping from the slip ring to the brush. In all cases however a definite service failure of the magneto has occurred. Signed H.E.W. This Sheet must be filed on completion of the work. | ||