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).
Specifications for an Alfa-Romeo Bosch starter motor, model L3.
| Identifier | ExFiles\Box 62\1\ scan0027 | |
| Date | 1st March 1932 guessed | |
| PARTICULARS OF ALPHA-ROMEO BOSCH STARTER MOTOR L3. Carcase dia. 3.9" " length 3.35" " thickness .25" Armature, active length 1.45" " diameter 2.35" " No. of slots 15 " coils per slot 3 Air gap .025" Poles, No. of 4 " length 1.3" " width, face 1.3" Commutator, No. of segments 45 " diameter 1.75" " length 1.42" Brushes, No. of 2 " length .64" " width .275" Weight of complete machine = 10 lbs. 6 ozs. | ||