differences between Neu Y and delta winds

[BrianG]

I thought Feigaos are considered non-slotted? The coils consists of "air-cores" with a long metal ring that sits outside the coil. While the Neus have the coils wrapped around a metal core, and the end of that core is in close proximity to the rotor magnets.

Not that it makes much difference in the end, but I'd be curious to know the relationship between slots/poles/turns/kv...