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).
Test results and remarks for a R.R. Goshawk Dynamo.
| Identifier | ExFiles\Box 51\1\ Scan107 | |
| Date | 24th November 1922 | |
| X. 4383 Typed 24.11.22. X.4383 R. {Sir Henry Royce} R. {Sir Henry Royce} GOSHAWK DYNAMO X.3604do. Date. | Dynamo number. | (2) Cold condition | | (3) Output after 20 mins. at 1350 r.p.m. | | (4) Warm condition | (5) (6) (7) | | temp. (°C) | O.C. Volts. | Amperes. | Volts. | O.C. Volts. | Remarks. 15.8.22. | 1 | 14 | 12.4 at 585 | 11.0 | 14.6 | 13.3 at 620 | Some sparking at control brush. One corner of +ve brush broken. 16.8.22. | 2 | 16 | 9.1 at 520 | 12.0 | 14.5 | 11.0 " " | Main brushes good. Control fair. Neg. brush flex strained. 17.8.22. | 3 | 18 | 9.0 " " | 10.8 | 14.6 | 11.85 " " | Main good. Control fair. Dynamo sings a little. 18.8.22. | 4 | 16 | 9.2 " " | 9.5 | 14.5 | 11.2 " " | Good generally. 11.9.22. | 5 | 18 | 14.2 @ 600 | 11.2 | 14.8 | 17.0 @ 700 | Good non-sparking and mechanical balance. 21.8.22. | 6 | 23 | 9.5 @ 560 As shunt 12.0 | 10.2 | 14.6 | 12.3 @ 660 | Neg. brush flex frayed 12.9.22. | 7 | 20 | 11.8 @ 600 13.4 as shunt | 10.5 | 14.65 | 13.4 @ 660 | Sings slightly. Brushes fair. 24.8.22. | 8 | 18 | 10.3 at 560 12.3 as shunt | 11.0 | 14.6 | 13.0 " " | Good generally. 25.8.22. | 9 | 18 | 11.5 at 560 13.5 as shunt | 10.5 | 14.7 | 14.0 " " | Main good. Control fair. 12.9.22. | 10 | 20 | 12.9 at 600 14.3 as shunt | 10.6 | 14.7 | 16.0 " " | Main good. Control fair 28.8.22. | 11 | 18 | 10.7 at 560 12.5 as shunt | 10.1 | 14.6 | 13.1 " " | Good generally. [Text on left margin]: R.R. Ltd (99) 12971/(97-42) M {Mr Moon / Mr Moore} /r886 | ||