On 2/7/2013 7:54 PM, Cor van de Water wrote:
Of course, with the two motors in series the expected max speed is half (37 MPH) so this sounds like an interesting city/freeway drive setup where the City setting allows the full current through both motors, giving twice the max torque at lower speeds, while the freeway setting gives higher voltage (higher speed) at the cost of lower torque (current divided between the two motors if the wheels turn at the same speed)
Exactly right. This is one of the big advantages of the two-motor series/parallel setup. It acts like a 2-speed transmission, and you only need one controler instead of two. I designed it for use in the Commuter Vehicle's Tango, and Otmar obliged by desiging the control logic for the Hairball to handle it.
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