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).
Blueprint of dynamo brush setting diagrams for Goshawk and E.A.C. models.
| Identifier | ExFiles\Box 50\5\ Scan284 | |
| Date | 29th February 1924 | |
| X 4333 DYNAMO BRUSH SETTING DIAGRAMS PRODUCTION 58° GENL TEST 62° N 9° RETARD + 16.4° 12.4° 122° OR 118° S 16.4° F 10.9° N GOSHAWK (POSITIVE ROTATION) VIEWS FROM COMMUTATOR END. 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. N 11° RETARD 19.5° 12.4° S + 19.5° 65° 115° F 14.3° N E. {Mr Elliott - Chief Engineer} A. {Mr Adams} C. (NEGATIVE ROTATION) ROLLS-ROYCE, LIMITED PRINT ROOM 29 FEB 24 E.F.C. 11/12/23 | ||