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 regarding a faulty, oversized carbon brush spring causing arcing on the slip ring.
| Identifier | ExFiles\Box 48\2\ Scan451 | |
| Date | 20th August 1920 | |
| ROLLS-ROYCE LTD. INSTRUCTIONS. RR 238 (100 BKS.) (BH57-20-8-20.) MP 224358 To Order No. Customer's No. noted that the carbon brush spring does not always work smoothly which suggests that these springs are slightly over-size and therefore do not exeAero Enginert much pressure on the brush. The combined effect is to prevent the brush from autom-atically adjusting itself for wear thereby causing arcing to the slip ring which gradually gets worse as the brush and pick up burn away. The faulty pick up is handed to you for replacement. Signed H.E.W. This Sheet must be filed on completion of the work. | ||