Looking more closely this motor for 300kv will take 300amps so 70kv will take max 60 amps give 4.9kw , this would be for 5000 rpm max direct drive at 70volts. So 60 amps @ 100v , for 7k rpm and 6kw peak. So in fact this motor may take 3kw cont for a direct drive. Mmmm do my figures work ? Shame it's not sensored .