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 and report for a repeat test on EG2 dynamo brushes, detailing wear and performance.
| Identifier | ExFiles\Box 50\5\ Scan374 | |
| Date | 20th November 1924 | |
| RR 238 (150 BKS.) (RH {R. Hollingworth} 57. 29-6-20.) MP 224355 ROLLS-ROYCE LTD. INSTRUCTIONS. 57 To: EFC {E. Fowler Clarke - Electrical Engineer} Order No. AC. 32. Customer's No. X.4333. 4610 20. Nov, 1924 Repeat Test of EG2 Brushes. A repeat test of these brushes on the standard dynamo has been made, the previous one being reported AE 25 / 22-12-24. There has been little sparking the brushes being well polished except for a slight dull line across the positive. The commutator finished well, but with slightly blackened segment trailing edges. The brush wear was:- Positive .0095"! Negative .006"! Control .008" Signed: H.A. This Sheet must be filed on completion of the work. | ||