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Better to rotate the magnets and keep the coils stationary.

Why?

Alan
The machine this motor was taken from was designed that way.

The stator bolts onto the outer plastic drum of the washing machine and the magnets are housed on a casing, which completely surrounds the stator but is attached to the spindle of the inner drum.
Basically a motor built in reverse to what we normally consider

So does that mean the machine avoids the "large wheel on the back of the drum and thus the shaft seal?
i.e. Drum's entirely driven by magnetic induction?

The stator does not move here.

The actual rotation is on the outside dark grey ring with the magnets in it.

The 3 phase coils are controlled via the controlboard to give forward and reverse rotation as well as a smooth acceleration and decelleration for fast spinning.
These are fixed to the machine via the 4 bolt holes in the middle.

In German we call this an "Aussenlaufmotor"
which
Translates in outside running motor.

Good stuff Ray,
Look, the actual bits that you see make up a crude sort of a stepper motor.
That is why it uses 2 artificial phases to power the rotor.
The main reasoning behind this configuration is for the agitate cycle, where this used to be performed mechanically with a ratchet and gearing system.
As I stated before, the pump motor is seperate to the drive motor, often being a shaded pole motor, these have very little torque and are often direct drive as opposed to driving a belt.
As they have a tendency to stall under any heavy load.

djk
If you look in my post titled "Project" you will see clearly the two parts of this motor. On the outer casing holding the pernament mags you will see where it attaches onto the shaft of the inner-drum. So sealed bearings are still needed. As you will notice in my sample the water marks show that the bearings have leaked.
Unlike our conventional machines where a slight leaks might get noticed and repaired a leak here proves fatal to the machine.

LG advertise these machines as "Direct drive" (as opposed to belt driven machines)silent whith little vibration. Infact I think they used to show them on full spin with a coin ballance on edcge on the top of the machine.

It's better to rotate the magnets and keep the coils stationary in an alternator because then you don't need slip rings and brushes.

There is inorganic rubbish at the moment in our suburb.
I see if i can score one complete washing machine with this drive to show the actual lay out.
If not we have to wait a little longer but these are regularly been dumped on the side of the road with all workings still in it.

Raymond