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 results for 48 coil high output dynamos (EJB modification) for narrow brush machines of the SS type.
| Identifier | ExFiles\Box 62\3\ scan0158 | |
| Date | 17th October 1930 | |
| [Handwritten top] 48 Coil High Output Machines. EJB modification (Results for basis of specification of test.) [Typed top] X.6006 R.R. EAC. DYNAMO X.6688 do. (NARROW BRUSH MACHINES OF THE SS.{S. Smith} TYPE) PRODUCTION TEST. [Table Headers] Date Dynamo (1) Remarks. (2)(3)(4) Remarks (5) Output at 1950 r.p.m. (Amperes. Volts.) (6) O.C. Volts at rpm. (>13.6) (7)(8)(9)(10) Remarks. Brush setting angles [Table Content] Row 1: Date: 19-6-30 Dynamo: 1.24S.HO. (1) Remarks: Made on Prod'n for shop. O.K. (2)(3)(4) Remarks: O.K. Output Amperes: 18.0 Output Volts: 18.9 O.C. Volts: 13.6 volts at 855 rpm. (7-10) Remarks: O.K. 22-48-70 Brush setting angles: B = 19.5°, C = 129.5° Row 2: Date: 8-7-30 Dynamo: 2.24S.HO. (1) Remarks: O.K. (2)(3)(4) Remarks: O.K. Output Amperes: 17.0 Output Volts: 18.7 O.C. Volts: 13.6 volts at 840 rpm. (7-10) Remarks: O.K. 19.5-44.5-64 Brush setting angles: B = 21°, C = 130.5° Row 3: Date: 26-9-30 Dynamo: L.H.J.M. (1) Remarks: O.K. (2)(3)(4) Remarks: O.K. Output Amperes: 17.8 Output Volts: 18.9 O.C. Volts: 13.6 volts at 825 rpm. (7-10) Remarks: O.K. 19-46-65 Brush setting angles: B = 19.5°, C = 127.5° Row 4: Date: 8-10-30 Dynamo: 2.24S.HO. (1) Remarks: O.K. (2)(3)(4) Remarks: O.K. Output Amperes: 17.6 Output Volts: 18.8 O.C. Volts: 13.6 volts at 825 rpm. (7-10) Remarks: O.K. 18.5-47-65.5 Brush setting angles: B = 19.5°, C = 129° Row 5: Date: 17-10-30 Dynamo: 3.24S.HO (1) Remarks: O.K. (2)(3)(4) Remarks: O.K. Output Amperes: 16.8 Output Volts: 18.8 O.C. Volts: 13.6 volts at 870 rpm. (7-10) Remarks: O.K. 19-55.5-74.5 Brush setting angles: B = 19.5°, C = 128.5° | ||