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 generator characteristics showing voltage and current against RPM.
| Identifier | ExFiles\Box 60\4\ Scan016 | |
| Date | 6th September 1929 | |
| GENERATOR CHARACTERISTICS ROLLS ROYCE OF AMERICA INC. A 12982 PLOTTED POINTS REPRESENT THE AVERAGE VALUES OBTAINED FROM 3 GENERATORS CHARGING AN EXIDE 3XK2H-1 BATTERY; SP.{Mr Spinney} GRAV. 1.260 GEN. FRAME TEMP. 80°C ROOM TEMP. 26.3°C "B.B.&S. GA. S.C.E. WAS ADOPTED AT #141 GEN. CHASSIS 257RPM. BAKELITE VARNISH ADOPTED & CENTRAL BAND ELIMINATED AT #342 GEN. CHASSIS 1170 RP THIN LAMINATIONS ADOPTED #376 GEN. CHASSIS 224 FP{F. Potts} AIR GAP IN GEN RS{Sir Henry Royce's Secretary} USED IN THIS TEST - .010" DATE 12-24-28 AXIS LABELS: TERMINAL VOLTAGE FIELD CURRENT - AMPERES ARMATURE CURRENT - AMPERES GENERATOR R.P.M. M.P.H. CURVE LABELS: ARMATURE CURRENT - MAXIMUM TERMINAL VOLTAGE - MAXIMUM TERMINAL VOLTAGE - MINIMUM DESIRED STANDARD CHARGING RATE (AS SET AT WORKS) FIELD CURRENT - MAXIMUM ARMATURE CURRENT - MINIMUM FIELD CURRENT - MINIMUM ADDITIONAL TEXT: OY. DEC. 26/28 14/52 AXLE 7"x20 TIRES EUGENE DIETZGEN CO. CHICAGO. NEW YORK NO. 346 BX STAMPED TEXT: SEP - 6 1929 | ||