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I was looking at the AC-50 motor graphs at the power/voltage size.

http://www.hpevs.com/Site/power_gra...lt/650-amp/ac50 108 650 amp imperial peak.pdf

http://www.hpevs.com/Site/images/to...raphs/ac50 144 volt 500 amp imperial peak.pdf

I am looking at the 108v and 144v. Am I reading these graphs correctly , it looks to me that there is better usable power range from the 108v than the higher 144v which seems surprising.

the 144v seems to have a lower HP and Torque but are more consistent.

I would like to get most usable power from the motor at mainly town driving so would it be better to have a 108v system?

Thanks
 

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Am I reading these graphs correctly...
the 144v seems to have a lower HP and Torque but are more consistent.
the 50/144 peaks at 87hp and the 50/108 peaks at 75hp, so maybe.

they did a slight rewind on the 50 to make the ac51, more torque per amp (and necessarily less rpm per volt) to better match the 144 (their claim)
ac51/144 peak 88hp
http://www.hpevs.com/Site/images/to...51 144 volts 500 amps imperial peak graph.pdf

contrast to the ac51 at 108 74hp, but 150 foot pounds.
http://www.hpevs.com/Site/images/to...ac51 108 volt 650 amp imperial peak graph.pdf

what isn't immediately clear is why the 108 and 144 controllers don't make about the same power, 144*500=72000watts, 108*650=70200watts, but the 108 comes up a good 12-14 hp short with both motors in the peak graphs.
 
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