This motor will generate allright because of the strong magnets in the outer rotor which will provide all, excitation and running current.
Most car alternator can be rewired to access the 6 power diodes and 3 excitation diodes.
I have a simple but reliable 12 Volts charging regulator circuit, which works with discreet components, can be build for a couple of $$.
I have trialled it in 3 different cars for over 10 years with no problems with this circuit.
In my old Falcon XY i put in a ducellier alternator with this cct when the old Email alternator failed because of a mechanical regulator faillure. (ok i talk old cars here).
In a Rover P5b i put it in with the original lucas alternator.
In a Renault 16 it worked with the Paris Rhone alternator.
This circuit can be mounted on the firewall somewhere, in a small insulated box with the heatsink for the 2N3055 on top.
