Window motor structure can do so changed?

[yx630514]

    I am now conducting the window motor experiment, presents a window motor structure and method, which is purely for research.

The more my first question:
    Specifically: the coil placed in the magnet inside the rotor, instead of the outside of the coil stationary. The external rotor iron, magnet fixed to the iron inside.

    For the time being not consider process structure can be achieved, only concerned about whether such a structure and usually the same way as the structure of the normal work? Can be set up? What disadvantages?

    The advantage of this structure are: 1) high-speed rotation when the rotor magnet will not fly out, 2) more important point is: the window motor they use a neodymium magnet, magnetic strong magnetic leakage is serious. Which structure the external magnet is an iron, it will not produce magnetic leakage (I have the structure in the conventional manner when the experiment, VISA card failure, watches are also affected, so this came up with this structure).
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My second question is:
    but would like the structure of the coil in accordance with the attached pictures to do changes.
    on the left [Figure 1] is the usual window motor coil structure,
    on the right [Figure 2] is I wish to revise the coil structure,

    hope that reasons for the change is:
[1] do not want to pass through the coil center from the axis,
[2] can easily be placed more of the coil.

But: do not know if such a modified approach is correct?


Thank you appropriate advice.

[jadaro2600]

AN interesting setup.