Hi Steve and
to the forum.
The regen
(and the cruise function) will not work when using the reverse function on the VEC controllers.
The only way around this would be to have a special switch to physically change over the correct pair of Hall sensors
and Phase wires to change the direction of the motor, instead of using the controller's built in reverse function.
To reverse the motor's default direction of rotation from the standard wiring, the Blue and Yellow Phase wires must be transposed, and the Green and Yellow must be transposed on the Hall sensor wires.
A simple
DPDT relay could be used for the Green and Yellow Hall sensor wires, but you would need
a crossover switch capable of switching very high AC current to swap the Blue and Yellow Phase wires.
Alan