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).
Road test report for EG2 grade 20hp dynamo brushes.
| Identifier | ExFiles\Box 50\5\ Scan308 | |
| Date | 25th April 1924 | |
| X.4333 ROLLS-ROYCE LTD. INSTRUCTIONS. To: EFC {E. Fowler Clarke - Electrical Engineer} Order No. AC.12. Customer's No. X 25/April/1924. Road-tests of EG2. 20hp. Dynamo Brushes Grade EG2 brushes were fitted to dynamo R3 on 7GI last October, and ran 5419 miles. being reported in PR.102. of 7-II-24. The same grade brushes were fitted to dynamo 470 on 4GII last month, and have run 2571 miles to date. The commutator and negative brush are in good condition; the positive brush being characteristically black. The combined mileages total 7990. Signed: A.W. This Sheet must be filed on completion of the work. | ||