Meaning the Alfine chainset would work perfectly well with it.
I'm liking the Alfine idea very much, but with a maximum tooth count of 45, and a struggle to find single speed chainrings on a PCD of 110, with more than 50t I think the comedown from my current 54T set up would make it too spinny to be useful.
Your GI if you're running a 3 speed is still high with a 45t chainring, having said that, SJS have a 50t one.
https://www.sjscycles.co.uk/chainrings/34-thorn-110mm-bcd-5-arm-reversible-single-chainring-332-inch-black/
@JurekB started
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Meaning the Alfine chainset would work perfectly well with it.