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Is my Reg/Rec Toast?

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Sooooooo.......

 

I have a 1996 XR250s, it has a BIG 3 phase stator and a reg/rec under the seat.  I've been having a problem with the battery not charging.  I have replaced the battery and I thought my stator was the issue with my bikes charging system but after removing it and sending it to a specialist to get checked it seems that it is fine.  It is kicking out good AC voltage and increases as the engine revs are increased.

 

The Reg/Rec is hot but is only outputting around 12 volts DC to the battery even when engine revs are increased.  

 

Am I going to have to bite the bullet and get a new reg/Rec ??

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Are you checking the voltage with the battery connected?  It could just be a bad battery.  

yes, and it is a new battery.  I've sent my RR off for testing and possible replacement...... watch this space!

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It is toast..... new one arriving on Tuesday, not OEM so it will be interesting to see what I get and how it fits / lasts!

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Well the new reg / rec is in but.... The headlight bulb has now blown! Does this mean its not regulating properly as there is too much current going to it???

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Yes it sits around 14v. I've installed a digital voltmeter on top if the dash too to keep an eye on the voltage while running. I'll replace with an oem bulb and see if it happens again'

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how did u do that? can u post a pic?

Hello MD30,

 

It's a pretty simple job......

 

I bought this from Amazon....

photo.PNG

 

Then just find any 12v wire that is operated when you turn on the ignition. I spliced it into one of the dash display lights then the negative (earth) into the earth of one of the running lights.  Check with a multi-meter before you commit to splicing however!

image.jpeg

 

After that you are good to go.  I stuck a little foam pad to the top of the dash unit and then superglued the volt gauge onto that.

image (4).jpeg

 

I checked what the volt gauge was reading to what was actually at the battery, the gauge was consistently 0.6v less than what was at the battery. So the 11.8v that is shown below is actually 12.4v at the battery.

image (1).jpeg

 

Put the cowling back on and it acts as a shade / cover for the gauge.

image (3).jpeg

 

image (2).jpeg

 

Hope this helps / makes sense!

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I installed a mini switch on mine so I can check the voltage with the bike turned off as well.  You may have a parasitic drain between the battery and volt meter.  Have  you checked the voltage at the new meter with your handheld meter?

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I installed a mini switch on mine so I can check the voltage with the bike turned off as well.  You may have a parasitic drain between the battery and volt meter.  Have  you checked the voltage at the new meter with your handheld meter?

I decided I didn't really need a mini switch, just turn the key to see the voltage.  I have checked for parasitic draws.  There don't seem to be any I think it's just the accuracy of the meter i think.  The bike has just sat for two weeks while I've been away working and fired on the button, first go, today.  It was showing 12.3 when I turned the key, so I definitely don't think there is a parasitic draw

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