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Post by magoconnor on Apr 26, 2019 19:29:51 GMT -5
Hello. There is a small wire hangin loose on my 139qmb ac stator. It appears to be travlin on top on all the coils, but somehow it has worked its way loose. Pictures below: By the help of my multimeter, I have found that it's connected to the cdi power coil (red/black wire). Is it junk or can I fix it ? If so how? I do have another coil on hand, but it only has 6 coils instead of 8. How ever they are significantly larger. Picture below: Will this produce less charging power ? Cheers Mag.    |
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Post by snaker on Apr 27, 2019 9:12:25 GMT -5
Where's the loose wire in the pictures?
If your saying that it is connected where the red/blk wire is soldered to the stator then its probably a stray strand that didn't get trimmed properly?
If its one of the heavy coil wires then buy a new stator.
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Post by magoconnor on Apr 27, 2019 9:17:24 GMT -5
Its thin like a hair, you should be able to spot it, if you look closely.
I know its not the best pictures.
The wire travels around the stator, on top of the big coils, but I have no idea what function it has.
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Post by magoconnor on Apr 27, 2019 9:18:05 GMT -5
Where's the loose wire in the pictures? If your saying that it is connected where the red/blk wire is soldered to the stator then its probably a stray strand that didn't get trimmed properly? If its one of the heavy coil wires then buy a new stator. |
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Rune 75
Scoot Enthusiast
Posts: 441
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Post by Rune 75 on Apr 27, 2019 10:23:29 GMT -5
If you go from 8 to 6 coils you will need a flywheel made for 6 coiled stators.
The loose wire probably means the coil is shot.
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Post by magoconnor on Apr 27, 2019 10:38:10 GMT -5
Do you think that the 6 pole stator will make less charging power?
They coil bigger, but I dont know if they make a difference.
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Rune 75
Scoot Enthusiast
Posts: 441
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Post by Rune 75 on Apr 27, 2019 11:33:25 GMT -5
Do you think that the 6 pole stator will make less charging power? They coil bigger, but I dont know if they make a difference. If you get the correct flywheel, as you must, I don't think you will notice any difference. They are most likely interchangeable. |
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Post by jackrides on Apr 27, 2019 11:39:50 GMT -5
Snaker got it right. Clip the strand off, put a dab of silicone on it. Assemble and if it runs right, you're good to go.
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Post by magoconnor on Apr 27, 2019 12:11:15 GMT -5
So that wire dosent do anything huh? I thought maybe it was for a inner coil or something. Its just if I install it, and it dosent work, I will have to remove the exhaust. I hate doing that, it breaks my back every time  I have got the fly wheel to match the 6 coil stator. It has one more wire tho.. I believe its a ground, so I would just have to hook it up somewhere to the frame. Is there way I can measure them with multimeter before installing them to see, if they are close in charging power? Cheers mag. |
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Rune 75
Scoot Enthusiast
Posts: 441
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Post by Rune 75 on Apr 27, 2019 13:36:50 GMT -5
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Post by magoconnor on Apr 27, 2019 13:43:55 GMT -5
Both the 6 and the 8 pole stator are ac stators.
I just believe that the 8 pole stator has a floating ground or something like that.
My main concern is the charging power.
How big a difference do you guys think there are, between the 6 and the 8 pole stator?
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Post by snaker on Apr 27, 2019 13:50:36 GMT -5
I'm assuming that your machine is a 50cc. That USUALLY means a single phase, half-wave stator/RR combination.
The six pole stators I believe are USUALLY single phase, half-wave also. Those combinations USUALLY are the dual circuit mess where one lighting coil wire (USUALLY the white wire) gets regulated and rectified and becomes the charging 12 volt DC circuit. The other lighting coil wire (USUALLY the yellow wire) gets regulated and is used as the 12 volt AC circuit.
The eight pole stators are USUALLY single phase, full-wave. They would have what's referred to as a "floating
ground". That means that lighting coil wires have no tie to ground at the stator, the ground is incorporated inside the RR. That hooks into what is basically a one circuit system. All of the stator lighting circuit goes through the RR and becomes the charging circuit. Lights run off that.
Which ever you have its important to match the styles of the stator and the RR or things wont work. That means both are single phase half-wave or both are single phase full-wave.
I cant tell for sure (you have to look and confirm) but your six pole (five lighting plus one AC ignition power coil) looks to have a wire soldered in the middle of the lighting coils. That would indicate that the wire is a "center tap" connection and is a half-wave.
Your eight pole (six lighting plus two AC ignition power coil) doesn't appear to have a center tapped wire suggesting that it is a full-wave stator.
You will have to confirm with visual and meter. If so, they are not interchangeable unless you also change to RR to match. Again meter the ground wire to the two lighting coil output wires of the stator (have it unplugged from the system). Any Ohms between the ground wire and either output means half-wave. Open between the ground wire and either output means full-wave.
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Post by snaker on Apr 27, 2019 14:01:21 GMT -5
The AC and DC stator refers to the style and is a bit misleading.. The AC style has a AC lighting coil circuit and also a separate AC ignition power coil circuit. The DC style has a AC lighting coil circuit like the AC style, but does not have the AC ignition power coil circuit.
So by default the system using a DC style stator has to use a DC powered ignition because there is no AC power available.
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Post by magoconnor on Apr 27, 2019 14:13:23 GMT -5
I'm assuming that your machine is a 50cc. That USUALLY means a single phase, half-wave stator/RR combination. The six pole stators I believe are USUALLY single phase, half-wave also. Those combinations USUALLY are the dual circuit mess where one lighting coil wire (USUALLY the white wire) gets regulated and rectified and becomes the charging 12 volt DC circuit. The other lighting coil wire (USUALLY the yellow wire) gets regulated and is used as the 12 volt AC circuit. The eight pole stators are USUALLY single phase, full-wave. They would have what's referred to as a "floating ground". That means that lighting coil wires have no tie to ground at the stator, the ground is incorporated inside the RR. That hooks into what is basically a one circuit system. All of the stator lighting circuit goes through the RR and becomes the charging circuit. Lights run off that. Which ever you have its important to match the styles of the stator and the RR or things wont work. That means both are single phase half-wave or both are single phase full-wave. I cant tell for sure (you have to look and confirm) but your six pole (five lighting plus one AC ignition power coil) looks to have a wire soldered in the middle of the lighting coils. That would indicate that the wire is a "center tap" connection and is a half-wave. Your eight pole (six lighting plus two AC ignition power coil) doesn't appear to have a center tapped wire suggesting that it is a full-wave stator. You will have to confirm with visual and meter. If so, they are not interchangeable unless you also change to RR to match. Again meter the ground wire to the two lighting coil output wires of the stator (have it unplugged from the system). Any Ohms between the ground wire and either output means half-wave. Open between the ground wire and either output means full-wave. The six pole stator has a thick wire connecting all the coils. So I cant that I guess ? Back to the 8 pole stator, do you know what the loose wire is ? Or can I just trim it and install it ? |
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Post by magoconnor on Apr 27, 2019 15:46:42 GMT -5
The six pole stator has a thick wire connecting all the coils.
Back to the 8 pole stator, do you know what the loose wire is ?
Or can I just trim it and install it ?
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