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).
Performance test results for a Goshawk Dynamo after adjustments for brush sparking.
| Identifier | ExFiles\Box 51\1\ Scan121 | |
| Date | 13th December 1922 | |
| RR 238 (500 Bks.) (SF 152. 6-11-18.) MP 197880 X. 4383. ROLLS-ROYCE LIMITED. INSTRUCTIONS. To: EFC. {E. Fowler Clarke - Electrical Engineer} Order No: AB. 61. Customer's No: 1 X4383 Goshawk Dynamo Performance. A machine (No 43) which was received from the production dept for attention on account of brush sparking, was after adjustments put through the general specification of test for Goshawk dynamos & some other tests running on the new bench rig, as below. Normal cold performance (O.C. volts) With a normal brush setting the voltage rose uniformly from 10.0 at 570 rpm to 17.0 at 695 rpm. Output. With the same brush setting, the machine, cutting in at 580 rpm gave an output, rising to a little over 12a (cont'd) Signed This Sheet must be filed on completion of the work. | ||