A few more data points from a newbie, 5 turn, 1500w Leafbike hub build...
Note: Using the CA3 for measurement; set tire circumference to 1666mm and units to kph so CA3 would read out rpm (kphx10=rpm). No load, max rpm, WOT:
53.8 volts / 547 rpm / 80 watts (10.2 Kv)
47.9 volts / 487 rpm / 67...