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).
Instruction sheet detailing specifications for an electrical winding and armature assembly.
Identifier | ExFiles\Box 23\2\ Scan062 | |
Date | 24th January 1919 | |
RR.300 (120B) (SF 349 24-1-19) MP 200552 91217 ROLLS-ROYCE LIMITED. INSTRUCTIONS. Gd 4th 180. To E.F.C. Order No. P.A. 23. Customer's No. Re X 2 in parallel. (e). Resistance of field circuit = .00608 Ohms at 17°C. 5. (a). Type of winding Prog Wave. (b) Number of slots. 25. (f). Number of com. bars. 25. (J). Step of winding. 6 coil. 7 com. Unobtainable (K). Resistance of armature. = .001385 ohms at 19°C. taken from segs. 1 and 6, and 1 and 7. (l). Position of brushes. In neutral position. 6. (a). Com. dia. = 1.790". (b). Com. length. = .969". (C). Brush contact area = .374 x .732 = .274 sq ins per brush (d). Brushes are marked SPEER. KKKK. and are similar to Morganite CM3. Signed C.A.P. This Sheet must be filed on completion of the work. | ||