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Zero Motorcycles Forum | 2013+ / Re: First impressions of the 2014 Zero SR
« on: April 17, 2014, 11:19:39 PM »How do you know you torque is limited at low speed?
Maybe it makes you feel wrong [ Power ~ Torque * RPMs ]. So you Horsepower are raise from 0 to MAX in a straight line till the motor reach the system voltage then it starts field weakening. It will always start with low power this is not limited it is the nature of a PMAC.
I believe the motor is a BLDC (BrushLess D C ) motor, which does in fact have maximum torque at zero RPM. I'm not an expert on Zero Motorcycles, but I've dealt with the BLDC controller on my CNC mill.
http://www.google.com/imgres?imgurl=http://upload.wikimedia.org/wikipedia/commons/c/ca/Brushless_DC_Electric_Motor_Torque-Speed_Characteristics.png&imgrefurl=http://commons.wikimedia.org/wiki/File:Brushless_DC_Electric_Motor_Torque-Speed_Characteristics.png&h=332&w=554&tbnid=Qopds_Y5pzVPNM:&zoom=1&docid=3aZ0_0Wv2ZY0YM&hl=en&ei=ZgxQU9r2M4SzyATp_4GIBA&tbm=isch&client=safari&ved=0CD0QMygFMAU