[E-Revonut]

Originally Posted by shaunjohnson

we all wish they were regenerative but they are not
even the new toyota prius and other hybrid cars dont have regeneraive brakes.
the reason being is...
applying current to the motor that has reverse timing (so the timing is -20* for instance) is MUCH more powerful than getting the motor generate current.
this goes double for brushless motors as you can only generate on one phase at a time and that means a lot of switching around just to get a few more mah.

here's a simple test...
get a brushed motor and put the shaft in the drill.
spin it over,,,so ok you feel a little resistance (like the motor would usually do when it is freewheeling), now short out the main solder tabs by some means.
you will feel the resistance increase a fiar bit but it wont lock up.
you want your brakes to be able to lock the wheels right?
well shorting out the phases so to speak is not going to work, a brushed motor...reverse current is applyed and this essentially reverses the timing allowing the motor to slow to a stop.

brushless motor's just have to reverse the timing on the phases.

shaun

Are you implying that Patrick is a liar? I will beleive him over you telling us that the braking IS regenative