UPDATE: I've been able to reduce amps to about 7 when running to 3400 rpm. That's the max rpm. At 1200 rpm it's only drawing .6 amps. I have tested the halls for functionality: each throws out a varying voltage from .02 to 4.8 as I hand turn the rotor. I've been stymied to get the motor to run under load: after a minute or less it loses sync. The motor just sits and quivers.
The Hall Sensor arrangement that I've added with EqualsZeroDesigns
engineering is a nice addition, and allows the fine tuning. BUT BUT BUT: the controller gets flibberjibet with a load. The Chinese vendor has been patient and helpful in advancing suggestions, but the last suggestion is Impossible: they'd like me to mount the Halls INTERNALLY. I just can't see it.
So for those out there contemplating BLDC's, here are the questions that pertain to the functional operation of the controller: is it an inrunner or outrunner? (Castle Creations has Hydra ESC's that are engineered for INrunners) . Is it sensored or unsensored? (From what I read here on the forum, sensored requires less of the controller, and Halls introduces more external wires into the mix, which require care, etc) . And now also, does the controller work only with internal hall sensors. Are there experts out there who can correct/explain this last?