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possible charging problem?

  • Thread starter Thread starter Piester
  • Start date Start date
P

Piester

Guest
well i ended up getting my old 83 750e back from the guy that bought it from me. has a dead battery so i jumped it from a non running car and when i pulled the cables off it died. would this be an indication that the charging system is in need of repair?
 
Nahhhh

Nahhhh

Probably not. You can't really check the condition of your charging system without first checking out the condition of your battery. You need to charge it up and then see if it will hold a charge (off of the bike). If it doesn't, buy a new battery. If it does, put it on the bike and see if it will run well and start reliably. Try that first and see what happens.:)
 
Last edited:
...seems to me that once the bike is running, it doesn't need the battery. So, yes, if the bike dies with the jumper cables removed you have an electrical problem. Check the fuses.
 
north49 said:
...seems to me that once the bike is running, it doesn't need the battery. So, yes, if the bike dies with the jumper cables removed you have an electrical problem. Check the fuses.
Click to expand...
Well, sorta if your charging is working right, but the R/R needs a reference point ( the battery) to decide what to do. Piester's problem points to a battery that holds so little charge that it can't keep ignition system happy.
 
i plan on testing the entire electrical system. i just found it odd that the bike wont run without constant power from the battery. my gsxr will run just fine without the battery in it.
btw im not new to bike by any means.
 
Piester said:
i plan on testing the entire electrical system. i just found it odd that the bike wont run without constant power from the battery. my gsxr will run just fine without the battery in it.
btw im not new to bike by any means.
Click to expand...
Your battery might be absorbing everything the charging system is pushing out and not having any leftovers.
 
yeah the battery thats in it is definitely shot. ill toss the one from my gsxr in it
 
Piester said:
i plan on testing the entire electrical system. i just found it odd that the bike wont run without constant power from the battery. my gsxr will run just fine without the battery in it.
btw im not new to bike by any means.
Click to expand...

The GSXR has an alternator which puts out power all the time. A GS uses a PM generator which has a switching type R/R that literally disconnects the stator from the electrical system when it shunts or opens (series). During those times if there is no capacity (like a battery or large capacitor) to supply power, the engine will just quit.
 
posplayr said:
The GSXR has an alternator which puts out power all the time. A GS uses a PM generator which has a switching type R/R that literally disconnects the stator from the electrical system when it shunts or opens (series). During those times if there is no capacity (like a battery or large capacitor) to supply power, the engine will just quit.
Click to expand...

good to know. the last time i was on this site a lot i always seemed to find the answer to my questions in your posts haha
 
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