GoldenMotor.com Forum

General Category => General Discussions => Topic started by: Revhead on January 17, 2013, 01:00:23 AM

Title: using GM external controller to test a bmc motor
Post by: Revhead on January 17, 2013, 01:00:23 AM

Hello Smart People,
I've been given a BMC motor to fix.  The owner lives in the country and has dropped off his motor without the controller.
I'm trying to test the motor by plugging in a GM external controller but it's smoking the green and yellow phase wires (I'm connecting them with aligator clips with thin wires).
I'm getting some wheel movement but it's not freely spinning, the movement is slow and irregular.
Would the correct connection be yellow to yellow, green to green and blue to blue or do I need to have the green and yellow wires swapped?
I think I remember seeing somewhere that GM has a different phase wire configuration.
Can someone give me some advice?
Thanks

Title: Re: using GM external controller to test a bmc motor
Post by: Lollandster on January 17, 2013, 09:14:21 AM

You can try swapping yellow and green on the hall sensors. BMCv4 and magicpie are suppose to be the same though.

Edit. If you are running sensor less, you need to spin the wheel before applying throttle. As far as I know the GM controller only does running start in sensor less.

Title: Re: using GM external controller to test a bmc motor
Post by: MAGICPIE3FOCUSPOWER on January 17, 2013, 10:34:26 AM

Maybe yoou can try:

Controller                         Motor

A-------------------------------yellow
B-------------------------------blue
C-------------------------------green

Hall Sensors                     Motor

Hall A-------------------------yellow
Hall B-------------------------blue
Hall C-------------------------green