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Post by NKY.S.C. on Jul 22, 2012 20:01:58 GMT -5
I have a 250cc and a voltage output of 12.8 @ 4000k but after a few hrs of constant riding the battery is too weak to start the bike. A jump and the bike kick right over.
I have the usual stock products running like headlights.
Any ideas? I don't think its the stator because of the positive charge.
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Post by OverReved on Jul 22, 2012 22:45:46 GMT -5
12.8 isn't really proper voltage for charging a battery on a running vehicle of any sort other than a diesel with no lights on!
It really sounds like your battery is weak and you should be sure it's fully charged before you diagnose anything on the bike.
If I were you. I'd charge that battery fully and let it sit overnight disconnected from the bike. Check voltage 24 hours after the charge.
12.6volts is ideal. Anything less than 12.3 and I'd replace it for not holding a charge( internal resistance between cells or across plates within a cell can discharge a battery that looks fine from the outside)
As for the 12.8volts at 4K RPM I myself have never checked what the charging output on these little scooters is. ( I'll have to do that tomorrow) I'd expect 13.5-14.2 volts on a well charged battery. ( A WELL CHARGED BATTERY- as a base. If your battery is weak the output voltage to it will also read as weak since the electrons are too busy heading into the battery and not into your meter)
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Post by wile on Jul 22, 2012 22:56:17 GMT -5
Start the scoot and test the Regulator/Rectifier it probably went south if you battery is good.
Here is how to test it the Regulator/Rectifier:
The red wire at the regulator/rectifier (R/R) is the output and should show at least 13.5 volts DC and more with the engine running. Black is the battery voltage and green is ground
Wile
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Post by acntvman on Jul 23, 2012 6:12:28 GMT -5
I have a 250cc and a voltage output of 12.8 @ 4000k but after a few hrs of constant riding the battery is too weak to start the bike. A jump and the bike kick right over. I have the usual stock products running like headlights. Any ideas? I don't think its the stator because of the positive charge. Well sorry to hear about your trouble. If you can answer a few questions I can help you get this solved. Do you have a meter that can read AC and DC ? Do you know how to use it? Can you get to the regulator? What kind of scooter branded name and numbers and or what the title says? John |
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Post by NKY.S.C. on Jul 23, 2012 9:10:32 GMT -5
Thanks for the posts. I appreciate the help.
I have a NEW large 12v battery after burning out a new little one. I know feel it is the Regulator/Rectifier Is that the same as the CDI?
I have a 2007 Roketa with a 250 cc with 700 miles on it. I will switch out the CDI and see if that fixes the problem
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Post by acntvman on Jul 23, 2012 9:49:40 GMT -5
Thanks for the posts. I appreciate the help. I have a NEW large 12v battery after burning out a new little one. I know feel it is the Regulator/Rectifier Is that the same as the CDI? I have a 2007 Roketa with a 250 cc with 700 miles on it. I will switch out the CDI and see if that fixes the problem If you want to just guess at parts that might work. You can be my eyes and hands and we can figure it out together. John |
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Post by macktheknife on Jul 23, 2012 9:50:49 GMT -5
CDI has nothing to do with the charging, if it runs there is nothing wrong with the CDI.
Check your messages.
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Post by OverReved on Jul 23, 2012 11:25:42 GMT -5
So we don't know the voltages, we have a previously bad part, and we have a feeling!
I like you.
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Post by acntvman on Jul 23, 2012 11:32:38 GMT -5
I would check ac output of the stator.
I have a few regulators fore sale. Post a pic of your regulator.
John
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Post by wile on Jul 23, 2012 13:04:26 GMT -5
Here is your CDI and Regulator/Rectifier: Wile This is what a CDI Looks like:  This is what a Regulator/Rectifier Looks like, could be a little different BUT notice it has cooling fins on the case, could have less wires going to it or more different scoots have different ones. So it is very important to get the right one otherwise you will have problems.:  |
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Post by acntvman on Jul 23, 2012 13:07:05 GMT -5
Nice diagram Wile!!!!!!!
John
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Post by wile on Jul 23, 2012 13:12:47 GMT -5
Thanks, he does need to take a picture of his R/R to match it up with the right one, there are so many kinds out there it is very easy to get the wrong one.
Wile
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Post by acntvman on Jul 23, 2012 13:23:24 GMT -5
Its a 250cc so its a 3 phase set up, just need to know if it is 5 6 or7 pin set up. I like the 7 pin with the black feedback/mo itor .
John
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Post by wile on Jul 23, 2012 13:41:57 GMT -5
Yes, that is correct need to find out how many pins his has.
Wile
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Post by NKY.S.C. on Jul 23, 2012 16:37:43 GMT -5
Wile is on target. I have the CDI in my hand. so from the posts the next option is to change the Regulator/Rectifier. I have see that too right next to the CDI.
if it helps I only have 700 miles on the scoot and 500 is mine..I bought it with only 200 miles on it.
Any good sits to buy the Regulator/Rectifier?
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Post by NKY.S.C. on Jul 23, 2012 16:39:56 GMT -5
heck at this rate I will have a new scooter when I replace darn near every part. ;-)
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Post by acntvman on Jul 23, 2012 16:41:11 GMT -5
Post a pic of it I may have one. Fast shipping.
John
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Post by wile on Jul 23, 2012 16:43:44 GMT -5
NKY.S.C
If you cannot post a picture at least check HOW MANY WIRES PLUG INTO IT. IT COULD BE 5, 6, or 7 wires that plug into it.
Wile
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Post by NKY.S.C. on Jul 23, 2012 16:55:06 GMT -5
Wile is on target with the 6 wire CDI but my reg is black and had all green wires on it. Scooter is 2007 Roketa.
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Post by wile on Jul 23, 2012 17:34:46 GMT -5
Regulators come in different colors that is not important the important thing is how many wires on the REGULATOR?
Wile
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Post by acntvman on Jul 23, 2012 19:17:21 GMT -5
I have a six pin regulator, but I would like to know the stator is ok first.
John
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Post by NKY.S.C. on Jul 23, 2012 19:31:43 GMT -5
I will tear it down and get the specs later this week. for now it runs and starts for the first couple of hrs then the battery does not have enough juice to crank the motor. I have a spare 12v small battery to give me an emergency jump if I get stuck. I will run a check on the stator output this weekend.
Thanks for all the help guys!
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