Motor Modification
This clock uses a Pittman
24V DC motor 9234S007.
The shaft end cap was milled out to accept a flanged ball bearing with
an inner
diameter that is larger than the shaft diameter so a bushing can be
used for
wire
routing.
Click on images to enlarge.
Wire routing. View of the shaft bushing with slot for wires.
Wire routing
use wire to hold springs back to install brushes
Phases 1 & 2
Phases 2 & 3
Note that phase 2 (red) is the symmetric one because of the
placement of the
3 phases
on 7 windings.