Yes I suppose it does have something to do with torque on the alternator as long as we are thinking of the correct torque.
The normal rotational torque on the alternator from the blades is not relevant but the torque on the alternator, due to the prop thrust acting on the alternator offset is what determines the furling point so if that is the torque you mean then you are right.
The thrust may be a little different between star and delta depending on the alternator characteristic and what happens in a specific case is a bit difficult to guess.
If well matched in delta the same alternator would probably be stalled in star at the same wind speed, so the thrust in delta may be higher. This would imply a lower furling wind speed in delta. If the machine was well matched in star then the delta connection may let it run fast and with less thrust so that would imply a higher furling speed in delta. Under these conditions the prop seeking force may also affect things and may raise the furling wind speed even higher.
In real life in most cases it would be not very different but the odd case could go way off. Unless someone can come up with a theory to deal with the seeking force it remains mostly trial and more often error.
Flux
