? does brushed motor need correct polarity?

[Will]

Am I in any danger of damaging my new controller or C-409? The hub motor has 2 black anderson conectors. The controller had some funky conector I had not seen before. I can I.D. the positive & neg from the controller. Question, since both motor connectors are black, does it not matter which gets pos & neg? thanks

 

[RB Cats]

You will need to connect these black wires to the hub motor to determine which direction the wheel is turning. If it is going the direction that you want then you lucked out and do not have to change it, to the other way. If you connect these black wires and the wheel is turning the opposite direction it will not hurt the controller and you may consider running the wires down the other side of the fork instead of redoing the electrical connector.

Hopes that helps.


RB Cats

 

[monster]

it wont hurt anything to use trial and error to find out the correct polarity. motors have an arrow showing direction of rotation for a reason tho i think.

 

[Will]

monster/cats;

Thanks, I don't know how my father had enough info. to get by on in his days. I can pull off intermidiate level applications just from reading and asking you guys. Ah, polarity was the term my feeble mind was searching for

 

[gmouchawar]

Some brushed motors don't have neutral timing. As such, they will consume less current and run more efficiently in the marked direction. I wouldn't run a brushed motor against its preferred direction for very long. It will generate a lot of arcing inside, wear the brushes and worst can destroy the controller. Thats my experience from RC motors and I would think it also applies to ebikes/scooters.
You can tell by doing the following experiment.
With leads connect straight to the battery insert a current meter in series with the motor. Let the motor spin and get to its max speed. Now flip the polarity. If the measured current is the same in either direction then it is neutrally timed and doesn't have a preferred direction. If it consumes less current in one polarity, this is the preferred direction and the direction you want it to pull you forward.

 

[Eric G]

You won't hurt the brushed controller by hooking up the brushed motor backwards,the motor will just spin the wrong way. The same is not true for hooking up the batteries to the controller!If you hook up the batteries reverse polarity to the controller you will damage the controller.

Eric