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 of open-circuit volt-speed curves for controlled dynamos under cold and hot conditions.
Identifier | WestWitteringFiles\L\2Jan1924-March1924\ Scan78 | |
Date | 14th March 1924 | |
C OPEN CIRCUIT VOLT-SPEED CURVES OF CONTROLLED DYNAMOS FOR COLD AND HOT CONDITIONS E.M.F. (VOLTS) 18 17 16 15 14 13.6 VOLTS 13 12.4 VOLTS 12 11 10 DYNAMO SPEED (RPM) 200 300 400 500 600 700 800 900 Graph Lines (from bottom to top): ROTAR AT.12 19°C. ROTAR AT.12 80°C. E.A.C. B. (UBAS POLES) 15.5°C SMITH 20 RR & 2111 18°C E.A.C B. (UBAS POLES) 74.5°C LONGER LUCAS E575 18°C. SMITH 20 RR & 2111 75°C. LONGER LUCAS E575 75°C. LUCAS E575 18°C. LUCAS E575 80°C. Graph Ranges: RANGE 346-408 RANGE 422-488 RANGE 435-522 RANGE 475-564 RANGE 610-725 Table: DYNAMO BALANCING SPEED Cold Hot Range E.A.C. B. 422 488 66 ROTAX 346 408 62 SMITH 435 522 87 LUCAS(LONG) 475 564 89 LUCAS(E.575) 610 725 115 Handwritten Stamps: C.R.P. 25-2-24 E7 C 14/3/24 | ||