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Re: Motor Driver Selection
Although I am certainly not an expert here are my thoughts.
All drivers are the same in nominal voltage and forward/reverse so those variables do not need to be considered.
I would not consider LW24VG because it is heavier larger and less powerful than LW24VFR offer no advantages over it and narrowing the contest to the first two.
Since your motor is rated for a max of 23 Amps and at max power should only be drawing 17.5 Amps (420watts/24v) then there is no need for an operating current above 20Amps. Unless your scooters is very poorly designed the motor shouldn't run at much more than 15amps continuously.
Therefor I would use LW24VFR for its low weight and size.
(A note on electronic braking) Electronic braking can never bring the speed of a motor down to zero (look up the physics of a motor with leads connected). In any case a scooter will require some kind of frictional brake so I don't believe electronic braking to be an important feature.
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