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 log for single modification dynamo machines.
| Identifier | ExFiles\Box 70\4\ scan0093 | |
| Date | 7th April 1927 | |
| X.8781/do X.8660. R.R. EAC. DYNAMO. X.8781do. SINGLE MODIFICATION MACHINES ON (FIGURES PRODN. TEST) | Date. | Dynamo Number. | (1) Remarks | (2)(3)(4) Remarks. | (5) Output at 1350 r.p.m. Amperes. 13.0 to 14.0. | Volts. 18.0 +-.1 | (6) C.C. Volts at 610 rpm. (=13.6) | (7)(8)(9)(10) Remarks. | Brush setting angles. | |---|---|---|---|---|---|---|---|---| | Machines with control brush advanced 3° | | 7.4.27 | HS.{Lord Ernest Hives - Chair}65.M | Submitted for purposes of prodn. test. | Run at 1400 rpm. on 17.5 volts. | 13.5 at 1400 rpm. | 18.0 | 13.6 volts at 604 rpm. | Slight hum at 1400 rpm. 14-51-65 | M.{Mr Moon / Mr Moore} 17.3° C. 125° | | 8.4.27 | CX.{Major Len W. Cox - Advertising Manager}95.M | Submitted for purposes of prodn. test. C. brush angle not quite 17-1/6 segs on 125° | Run at 1350 r.p.m. on 17.8 volts. | 13.9 at 1350 r.p.m | 18.0 | 13.6 volts at 585 rpm. | O.K. 14-58-72 | M.{Mr Moon / Mr Moore} 17° C. 124° | | 11.4.27 | HY.{Tom Haldenby - Plant Engineer}75.M | Submitted for purposes of prod. test. C. brush angle not quite 17-1/6 segs. | Run at 1350 rpm on 17.8 volts. | 13.8 at 1350 rpm. | 18.0 | 13.6 volts at 580 rpm. | Slight brush screeching noise 13-51-64 | M.{Mr Moon / Mr Moore} 17° C. 124° | | 22-9-27 | VG.85.M | Check machine. C angle only 122° | O K | 13.0 | 18.0 | 13.7 | Brush chattering noise Hum at about 800 rpm. | M.{Mr Moon / Mr Moore} 16° C. 122° | | 2-3-28 | TJ.85.M | Check machine. | O K | 14.3 | 18.0 | 11.6 | Pulley-end bearing somewhat slack, Leakage on insulation of field winding. 15-65-S-80-S | M.{Mr Moon / Mr Moore} 15.5° C. 121° | | ||