I have been given the task to rewind the field coils of a bacon slicer starter motor. I was give a set of coils that were shorted out due to heat and corrosion that is, the original insulation had failed. The rewinding process is not difficult however the connection arrangement of the coils is not clear. The field coils consist of two sets of of coils in series then the two sets connected in parallel .
My question to the Forum is, are the field coils connected in parallel across the armature eg in shunt configuration or in series with the armature and therefore in series configuration.

Any information would be appreciated.

Bruce Weir-Smith.

Location: Western Australia

Hi Bruce

No answers but you have got me curious.
Only familiar with later 12v models but these have field coils with flat bars not conducive to rewinding. Field in series with armature, but the NSNS fields are paired in series then if two brushes both tails connected to the same brush, and if 4 brush connected to opposites (which are the same electrically) so still in parallel. The fields conceivably could be each in series or all in parallel, then in series thru the armature. But I guess you know all that... I understand starters exist with alternate poles not wound...
If the windings have many turns perhaps were connected in parallel as the dynamo?
Someone must have a starter apart!

Location: Auckland, NZ