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).
Graph comparing the heating tests of three different plain shunt dynamos over time.
| Identifier | WestWitteringFiles\F\January1921\ Scan23 | |
| Date | 23th December 1929 | |
| COMPARATIVE HEATING TESTS OF PLAIN SHUNT DYNAMOS. SMITH A SMITH 2D WESTINGHOUSE Speeds adjusted to constant outputs First stage 9amps at 14.6 volts. Second stage 12amps at 15.0 volts SMITH A.{Mr Adams} TEMP. BY FIELD COIL RESISTANCE SMITH 2D TEMP BY FIELD COIL RESISTANCE SMITH A.{Mr Adams} SPEED. SMITH A.{Mr Adams} TEMP OF CARCASE BY THERMOMETER SMITH 2D TEMP OF CARCASE BY THERMOMETER SMITH 2D SPEED. WESTINGHOUSE. SPEED WESTINGHOUSE. TEMP. BY FIELD COIL RESISTANCE. WESTINGHOUSE. TEMP. OF CARCASE BY THERMOMETER. Y-AXIS (LEFT): SPEED [R.P.M.] Y-AXIS (RIGHT): TEMP [°C] X-AXIS: TIME [MINUTES] Handwritten notes: HQa 21-III-20 E/7 C.S. 23/12/29 | ||