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 notes on the output of a dynamo operating as a shunt machine.
| Identifier | ExFiles\Box 51\1\ Scan124 | |
| Date | 6th November 1918 | |
| RR 238 (300 Bks.) (SF 152. 6-11-18.) MP 197880 ROLLS-ROYCE LIMITED. INSTRUCTIONS. To __________ 19__ Order No __________ Customer's No. 4. the output rising to 10.5 A at 1500 rpm & reducing to about 5.0A at 4000 rpm. O.C. volts as shunt machine. This was taken rather hurriedly with the dynamos at about 50°C and was found to be from 10.0 volts at 500 rpm. to 15.0 volts at 635 rpm which would indicate 17 volts at 715 rpm, the slope when plotted, being a little shallower than that for the other open circuit voltages which are fairly parallel. Signed F.{Mr Friese} J.{Mr Johnson W.M.} Allen. This Sheet must be filed on completion of the work. | ||