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 detailing observations on intermittent flashing on brushes and commutator polarity.
| Identifier | ExFiles\Box 50\5\ Scan195 | |
| Date | 6th November 1918 | |
| RR 238 (300 Bks.) (SF 152. 6-11-18.) MP 197880 ROLLS-ROYCE LIMITED. INSTRUCTIONS. To Order No Customer's No. Z. 19 for intermittent bright flashing to occur at the trailing edge of the negative brush, whichever this may be. A notable feature is that on all the brushes a narrow strip along the leading edge is specially bright and this does not change with polarity. The commutator presents the same appearance, after running with reversed polarity as with normal polarity. Signed A.J. Allen. This Sheet must be filed on completion of the work. | ||