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 log sheet for a Goshawk dynamo, recording performance data.
| Identifier | ExFiles\Box 51\1\ Scan376 | |
| Date | 6th June 1924 | |
| X4383 X.4383 - R.R. GOSHAWKAero EngineCodename for 20HP Car / Aero Engine after KestrelAero Engine DYNAMO. X13604do. COLUMN HEADERS: Date | Dynamo number. | (3) Cold condition. Temp. (°C) / O.C. volts at 600 RPM. Cont. (>(12.4)) / Shunt. | (4) Output. after 20 mins. at 1450 r.p.m. Amperes. (>11)) / Volts. (>14.8) | (5) Warm condition O.C. volts at 700 r.p.m. (>13.6 )) | (g) (7) (8)&(9) Remarks. TABLE DATA: [Row 1] Date: 15.8.23., Dynamo number: 288, Cold Temp: 22, Cold Volts Cont: 13.9, Cold Volts Shunt: 14.2, Output Amperes: 11.0, Output Volts: 14.8, Warm Volts: 17.0, Remarks: - [Row 2] Date: 23.8.23., Dynamo number: 161, Cold Temp: 19, Cold Volts Cont: 13.6, Cold Volts Shunt: 14.1, Output Amperes: 11.1, Output Volts: 14.8, Warm Volts: 16.7, Remarks: O.K. Control advanced .07" beyond gauge setting. [Row 3] Date: 17.9.23., Dynamo number: 564A., Cold Temp: 22, Cold Volts Cont: 12.7, Cold Volts Shunt: 13.0, Output Amperes: 11.0, Output Volts: 14.8, Warm Volts: 15.6, Remarks: Control holder tightened. Now approx. correct by gauge. [Row 4] Date: 22.9.23., Dynamo number: B, Cold Temp: 18, Cold Volts Cont: 14.8, Cold Volts Shunt: 15.0, Output Amperes: 11.6, Output Volts: 14.8, Warm Volts: 18.1, Remarks: Sings slightly at full load. Brushes characteristically marked 1.15 [Row 5] Date: 25.9.23., Dynamo number: R.3., Cold Temp: 18, Cold Volts Cont: 14.3, Cold Volts Shunt: 14.5, Output Amperes: 11.1, Output Volts: 14.8, Warm Volts: 17.4, Remarks: Control brush(spring retightened after running. Ditto one main. 6-9 O.K. (brush nut EG2 [Row 6] Date: 26.9.23., Dynamo number: 288., Cold Temp: 18, Cold Volts Cont: 14.0, Cold Volts Shunt: 14.5, Output Amperes: 11.3, Output Volts: 14.8, Warm Volts: 17.1, Remarks: Cont. fully advd. All brush nuts tight. O.K. [Row 7] Date: 29.9.23., Dynamo number: 318, Cold Temp: 18, Cold Volts Cont: 13.3, Cold Volts Shunt: -, Output Amperes: 11.4, Output Volts: 14.8, Warm Volts: 16.0, Remarks: 6-9 O.K. Faults in AB 29.9.23 not corrected [Row 8] Date: 9.10.23., Dynamo number: A, Cold Temp: 20, Cold Volts Cont: 14.5, Cold Volts Shunt: -, Output Amperes: 10.9, Output Volts: 14.8, Warm Volts: 17.4, Remarks: 6-9 O.K. Main brushes in old position. [Row 9] Date: 11.10.23., Dynamo number: D, Cold Temp: 20, Cold Volts Cont: 14.2, Cold Volts Shunt: -, Output Amperes: 11.4, Output Volts: 14.8, Warm Volts: 17.4, Remarks: 6,8,&9 O.K. Armature heavy @ 90° from key (clockwise) DRIVING END. [Row 10] Date: 15.10.23., Dynamo number: 562, Cold Temp: 18, Cold Volts Cont: 13.1, Cold Volts Shunt: 13.5, Output Amperes: 11.4, Output Volts: 14.8, Warm Volts: 15.9, Remarks: 6-7 O.K. 8 Stiff. 9 OK Comm. fair. [Final Entry] Date: 6.6.24. | ||