According to a post by hot rod Jerry, the no. of field coils relates to torque.
As you know there is more to a rebuild than brushes. Bronze bushings, commutator, good solder joints, brush springs and tiny bit of oil in felts or oil holes......One of the MOST important things for starting is BIG new cables terminated and clamped to shiny clean positive posts and studs. Negative cables to clean negative posts and all grounding to shiny metal spots.
Last edited by bartamos; 08/13/2025 4:28 AM. Reason: clarification