If the MPIII controller is simply out of stock
(and not discontinued) you may be able to wait for a replacement.
Have you tried
other dealers to see if they might have a controller in stock?
Some users have converted their non-vector Magic Pies to run with external Infineon controllers.
More information can be found
here and
here.
The three Thick Phase wires and the five thin Hall Sensor wires would need to be extended to connect to the external controller:
Converting to an external controller would also require modification of the main harness wiring to suit the new controller.
I would also like to know whether anyone has tried using a
Phaserunner controller from GrinTech with a non-vector Magic Pie, as this is the controller I would like to use if I converted my MPII to work with an external controller.
I know from experience that the MP4 vector controller would not work with my MPIII motor, so presumable the MP5 Vector controller will also not work with an MPIII as the MP4 and MP5 have the same stator
(which is apparently wound differently to earlier Magic Pie stators).
Alan