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).
Diagrams for dynamo brush settings for 57 coil armatures.
| Identifier | ExFiles\Box 50\5\ Scan354 | |
| Date | 3rd February 1925 | |
| R DYNAMO BRUSH SETTING DIAGRAMS 57 COIL ARMATURES TOP DIAGRAM: TERMINALS + F+ - N S 7° 60° 16.4° 120° 63° 10.9° F 16.4° N ENGINE SIDE LEFT SIDE: 20 HP POSITIVE ROTATION VIEWS FROM COMMUTATOR END RIGHT SIDE: IN THESE DIAGRAMS THE MAIN AXES OF REFERENCE ARE THE NEUTRAL AXES OF COMMUTATION IN THE ABSENCE OF ANY ARMATURE REACTION THE MAIN BRUSH AXES ARE ARRANGED IN THE DESIGN OF THE MACHINE TO COINCIDE WITH THE POLAR AXES BOTTOM DIAGRAM: S 12° + 19.5° 56° 60° TERMINALS F+ - N 19.5° F 14.3° N 63° 12° 12.4° S ENGINE SIDE E.A.C NEGATIVE ROTATION STAMP: ROLLS-ROYCE, LIMITED. PRINT ROOM. 3 FEB 25 DERBY HANDWRITTEN: F.J.A E.F.C 30-1-25. | ||