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Charging system 1981 gs650e

  • Thread starter Thread starter kckershovel
  • Start date Start date
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kckershovel

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I'm not sure if I have a bad battery or charging system. Should I be able to remove the negative Battery cable with the bike running and it continue to run? Mine dies if I pull the - cable with it running......
 
I'm not sure if I have a bad battery or charging system. Should I be able to remove the negative Battery cable with the bike running and it continue to run? Mine dies if I pull the - cable with it running......

What you describe is one of the best ways to fry your charging system.
 
So is the bring to 2500 rpm and check for 13+ volts at the battery the correct way to test? I'm new to GS's
 
Key off 12.56 key on not running 12.1 running all rpm 12.1 key off 12.56
 
If you are not seeing an increase in voltage with RPM, then you have an R/R problem, stator issue, or possibly both.
 
I'm not sure if I have a bad battery or charging system. Should I be able to remove the negative Battery cable with the bike running and it continue to run? Mine dies if I pull the - cable with it running......
Not busting your chops, but what was your thought process in pulling the negative lead?
 
To be perfectly honest it is a friends bike and he had done the pull - cable before I talked with him. I'm not sure what his thinking was. I told him I would ask so I did. Since then I have walked him through the testing procedures over the phone and the stator failed the ohm resistance test.
 
To answer your original question, these bikes need at least a semi-working battery in order for the ignition system to work.
 
That is what I thought. That is why I asked but it turns out his stator was bad anyway. We will be putting a stator in it in the next few days.
 
He is trying to spend as little as possible. How do we test the R/R? I know allot of people change both at the same time.
 
He is trying to spend as little as possible. How do we test the R/R? I know allot of people change both at the same time.

If the stator is bad, it is because the R/R killed it whether the R/R survived or not. So why do you need to test the R/R? :confused:
 
If the stator is bad, it is because the R/R killed it whether the R/R survived or not. So why do you need to test the R/R? :confused:
I suppose a stator could go bad for other (physical) reasons, and not due to burning out from a bad R/R, right?
 
I suppose a stator could go bad for other (physical) reasons, and not due to burning out from a bad R/R, right?

Have you even see a bad Stator that was not burned?

But to your point, you are correct, that is my assumption.

I'll take all wagers if it is an untouched OEM stator that it is bad it is smoked. ;)
 
Have you even see a bad Stator that was not burned?

But to your point, you are correct, that is my assumption.

I'll take all wagers if it is an untouched OEM stator that it is bad it is smoked. ;)
Honestly, I have not experienced enough failed stators to say otherwise, but I have read one or two stories along the way of failures due to "hard knocks".

I wouldn't even bet a colleague's salary on the R/R being good and the stator bad due to some unknown trauma.
 
Honestly, I have not experienced enough failed stators to say otherwise, but I have read one or two stories along the way of failures due to "hard knocks".

I wouldn't even bet a colleague's salary on the R/R being good and the stator bad due to some unknown trauma.

Yea, it could also be crash damage. I'm a little groggy so not thinking very well. :(
 
I'm not sure if I have a bad battery or charging system. Should I be able to remove the negative Battery cable with the bike running and it continue to run? Mine dies if I pull the - cable with it running......

Why do people do such things?
<edit> I see it was your friend who was the first one to do it, but he picked it up from somewhere.
I suppose it was an old diagnostic technique from generator/dynamo days (in fact, it would have worked, back then).
There's nothing more lethal than an old trick like that, applied to modern (or relatively modern) electrical systems.
 
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