Which of those two velocity konstant Kv values? (in rpm/volt, Kv is a physical property, not a unit of measurement). Or is it just a typo?

Those two values would give two extremely different motors. Because both current and power drawn are proportional to Kv cubed. A factor of (2860/1850)³=3.6, i.e. 260% more current and power drawn.

Note that Kv says nothing about max.power and max.current capability. Like e.g. mass, Kv is not a rating, not a figure of merit.

Gelukkig Nieuw Jaar en wees voorzichtig, Ron
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