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Unread 06-04-2015, 11:43 PM   #31
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Default Re: bench testing a motor (picture)

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Originally Posted by greg-g View Post
Okay so you have a motor that is not marked the hardest part is knowing whether it's a Sepex or a series motor, the only difference in the markings are the F for field in a sepex and S for stater in a series motor. The Armature is almost always towards the end of the motor so that they can be close to the brushes on the end of the armature.
About the only thing that will happen if you get A1 and A2 mixed up it will run in the wrong direction The same thing goes for the S1 S2 and the F1 F2 Which are almost always towards the center of the motor. Now if you mix up a series motor for a Sepex motor you got trouble.
Thanks for the advice and information. I will take additional pictures in the morning and post them.
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Unread 06-05-2015, 08:35 AM   #32
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Default Re: bench testing a motor (picture)

OK, based on what you said, "F1 for SEPEX motor", that is how this motor is marked. See diagram attached. The original motor is marked A1-2 and S1-2 so I assume its a SERIES motor. Will the new SEPEX motor work on my cart? Do I just connect the "S" cables to the "F" terminal?

Thanks for you help.
Attached Images
File Type: jpg new-motor3.jpg (372.5 KB, 0 views)
File Type: jpg new-motor2.jpg (344.0 KB, 0 views)
File Type: jpg new-motor1.jpg (329.2 KB, 0 views)
File Type: jpg new-motor4.jpg (1.44 MB, 0 views)
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Unread 06-05-2015, 08:50 AM   #33
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Default Re: bench testing a motor (picture)

It is a little hard for me to tell from the picture, but:

if the field or stator coil is composed of large and few "Flat" wires, then it is a Series motor.

In the other hand if what is on the picture is a paper wrapper around a coil composed of many smaller gauge round wires, then it is a Shunt motor.
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Unread 06-05-2015, 08:55 AM   #34
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Default Re: bench testing a motor (picture)

they are not plug and play if you want to convert to sepex new controller then yes it will bolt up but you cannot run it like a series motor. from what I can see in the picture there are large winding on your old motor and very fine winding on the new motor which make them incompatible
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Unread 06-05-2015, 10:49 AM   #35
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Default Re: bench testing a motor (picture)

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Originally Posted by Sergio View Post
It is a little hard for me to tell from the picture, but: if the field or stator coil is composed of large and few "Flat" wires, then it is a Series motor.

In the other hand if what is on the picture is a paper wrapper around a coil composed of many smaller gauge round wires, then it is a Shunt motor.
Quote:
Originally Posted by greg-g View Post
they are not plug and play if you want to convert to sepex new controller then yes it will bolt up but you cannot run it like a series motor. from what I can see in the picture there are large winding on your old motor and very fine winding on the new motor which make them incompatible
OK, So here are some better pictures. If it is a SEPEX then it wont work on my cart, without some modification, correct?
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File Type: jpg 1-new-motor1.jpg (603.0 KB, 0 views)
File Type: jpg 1-old-motor1.jpg (582.1 KB, 0 views)
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Unread 06-05-2015, 11:14 AM   #36
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Default Re: bench testing a motor (picture)

If it is a Sepex Motor will not work without changing controller, FNR, etc...

There is still no way to tell what it is under that paper wrap around the field coil.

It could be "Flat" wire, which means it is a Series motor.
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Unread 06-05-2015, 11:14 AM   #37
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Default Re: bench testing a motor (picture)

Go on, you know you want to. Your dieing to try it. Hook it up and see what happens.
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Unread 06-05-2015, 11:30 AM   #38
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Default Re: bench testing a motor (picture)

Quote:
Originally Posted by Sergio View Post
If it is a Sepex Motor will not work without changing controller, FNR, etc...

There is still no way to tell what it is under that paper wrap around the field coil.

It could be "Flat" wire, which means it is a Series motor.
OK! Can I cut some of that paper away to see?

Can I do any damage to the motor if I hook it up to test.





Quote:
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Go on, you know you want to. Your dieing to try it. Hook it up and see what happens.
Man, you must know me.

ITS GONNA HAPPEN
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Unread 06-05-2015, 11:36 AM   #39
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Default Re: bench testing a motor (picture)

Gotta get this kart fixed. Keeping me from my project.
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Unread 06-05-2015, 11:58 AM   #40
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Default Re: bench testing a motor (picture)

USE an OHMMETER on the field coil. A sepex motor has at least a few ohms resistance. A series motor is sub 1 ohm resistance. If the connections are labeled F1, F2, it is probably a sepex (parallel field) motor. Your original is a Series field motor. They will not work with the same controller!!!!
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