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 Machines with EJB Modification.
| Identifier | ExFiles\Box 62\3\ scan0159 | |
| Date | 17th October 1930 | |
| 48 Coil High Output Machines with EJB Modification (Results for basis of specification of test.) PRODUCTION TEST. 6006 X. [strikethrough] R.R. EAC. DYNAMO X. [strikethrough] do. (NARROW BRUSH MACHINES OF THE SS.{S. Smith} TYPE) | Date | Dynamo | (1) Remarks. | (2)(3)(4) Remarks | (5) Output at [strikethrough] r.p.m. Amperes. [strikethrough] Volts. | (6) C.C. Volts at [strikethrough] rpm. (>13.6) | (7)(8)(9)(10) Remarks. | Brush setting angles | |---|---|---|---|---|---|---|---| | 17-10-30 | 4.24S.HO | O.K. | O.K. | 16.2 at 1950 rpm, 18.5 | 13.6 volts at 890 rpm | O.K. 18-50.5-68.5 | C = 129° | | 18-10-30 | 5.24S.HO | O.K. | O.K. | 16.1 at 1950 rpm, 18.5 | 13.6 volts at 865 rpm | O.K. 15.5-51-66.5 | C = 129° | | 20-10-30 | 6.24S.HO | O.K. | O.K. | 17.6 at 1950 rpm, 18.8 | 13.6 volts at 900 rpm | O.K. 16.5-54.5-71 | C = 127.5° | | 21-10-30 | 7.24S.HO | O.K. | O.K. | 17.4 at 1950 rpm, 18.8 | 13.6 volts at 855 rpm | O.K. 15.5-51-66.5 | C = 127.5° | | 22-10-30 | 8.24S.HO | O.K. | O.K. | 17.0 at 1950 rpm, 18.7 | 13.6 volts at 855 rpm | O.K. 18-53-71 | C = 128° | | ||