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).
List of design data points required for starter motors, covering dimensions, weights, and magnetic circuit information.
| Identifier | ExFiles\Box 61b\3\ scan0109 | |
| Date | 24th January 1929 | |
| x543 -sl6027. 24.1.29. X.543. DESIGN DATA OF STARTER MOTORS. A.{Mr Adams} Dimensions. (a) Carcase diameter. (b) Carcase length. (c) Carcase thickness. (d) Armature diameter. (e) Armature active length. (f) Driving end armature overhang. (g) Length of commutator connections excluding commutator spokes. (h) Ditto including commutator spokes. (i) Ratio armature dia. to carcase dia. B. Weights. (a) Complete machine but without pinion, sprocket or suspension. (b) Armature without pinion or sprocket. (c) Carcase and pole pieces bare. (d) Armature stampings. (e) Armature copper exclusive of commutator copper. (f) Field copper. C. Magnetic circuit. (a) Form and dimensions of carcase and poles. (b) Air gap (inches) (c) Form, dimensions, number and space efficiency of armature stampings. Contd. | ||