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).
Production test log for Phantom II type dynamo machines with 56 coil armatures, recording output, volts, and brush settings.
| Identifier | ExFiles\Box 60\1\ Scan288 | |
| Date | 14th May 1929 | |
| Top Right Reference: X.7660 Top Center Title: PRODUCTION TEST. Handwritten Subtitle: P II type machines with 56 coil armatures and thinner stampings Type Line: Rolls Royce. E.A.C. DYNAMO 6088 do. (NARROW BRUSH MACHINES OF THE SS.{S. Smith} TYPE) Other stamped/written numbers: x7660, x6073. TABLE DATA HEADERS: Date. | Dynamo number. | (1) Remarks. | (2)(3)(4) Remarks. | (5) Output at 1300 r.p.m. [Amperes. 13.0 to 14.0 | Volts. (18.0 +- 1)] | (6) O.C. Volts at 650 r.p.m. [> 13.6] | (7)(8)(9)(10) Remarks | Brush setting angle. ROW 1: Date: 14-5-29 Dynamo number: XI.15.SSX (1) Remarks: First completely inverted machine produced. Made by Prodtn. for an exhil car. B=9° C=122° OK (2)(3)(4) Remarks: OK (5) Output: 13.8 Amperes | 18.0 Volts (6) O.C. Volts: 13.6 (7-10) Remarks: OK 20 - 59 - 79 Brush setting angle: B = 10°, C = 122.5 ROW 2: Date: 30-5-29 Dynamo number: XI.35.SSX (1) Remarks: Only observations on output and heating made. (2)(3)(4) Remarks: — (5) Output: 13.8 Amperes | 18.0 Volts (6) O.C. Volts: 13.9 (7-10) Remarks: 21.5 - 58.5 - 80 Brush setting angle: C = 121° ROW 3: Date: 9-7-29 Dynamo number: VK.55.SSX (1) Remarks: Only observations on output and heating made. (2)(3)(4) Remarks: — (5) Output: 14.1 Amperes | 18.0 Volts (6) O.C. Volts: 15.4 (7-10) Remarks: 18.5 - 50 - 68.5 Brush setting angle: C = 122° ROW 4: Date: 10-1-30 Dynamo number: XK.35.SS{S. Smith} (1) Remarks: Only observations on output and heating made. (2)(3)(4) Remarks: — (5) Output: 13.7 Amperes | 18.0 Volts (6) O.C. Volts: 13.7 (7-10) Remarks: 17 - 59 - 76 Brush setting angle: C = 121.5° ROW 5: Date: 21-1-30 Dynamo number: AH.35.SS{S. Smith} (1) Remarks: Tested for fault. Brush clearance between negative holder & comm only about .010" (2)(3)(4) Remarks: O.K. (5) Output: 13.0 Amperes | 18.0 Volts (6) O.C. Volts: 13.1 (note: 13.6 volts at 650 rpm) (7-10) Remarks: OK 71° Brush setting angle: C = 122° | ||