gs1100g 83 charging problem

[Guest]

--hello-thought I had charging issue solved --but with old rectifier I am getting 13.5v at idle but 15-16 at 4000rpm---over .2v when connecting to red-red on rectifier and multimeter neg to red on battery. Indicates problem with red power lead to battery? bob

[Larry D]

I'd like to help, but I'm terrible with electrical stuff. Have you been through the Stator Papers ?

http://www.thegsresources.com/gs_garage.htm

[posplayr]

bwarnock

What are your voltages?

You notes the R/R (+) to Battery (+) was over 0.2v; what is it at 5000 RPM?

What about the R/R (-) to Battery (-) at 5000 RPM?

The good news is the stator appears fine. I have been looking for some one to do these measurements with an over charging system. Please measure the leads before disturbing anything .

Do you still have the OEM R/R?

Jim

[bonanzadave]

with old rectifier I am getting 13.5v at idle but 15-16 at 4000rpm---over .2v when connecting to red-red on rectifier and multimeter neg to red on battery. Indicates problem with red power lead to battery? bob

Bob,

R U using the stock RR ? Connectors clean ? RR ground wire connected direct to the - batt post ? Does your RR have a sense wire ?

Lots of questions and like Larry said most of the answers are in the Stator Papers.

[posplayr]

I'm trying to get him to measure the voltages in Steps 2 and 3 of Part A (positive lead and the negative lead voltages) before he disturbs it. I'm trying to figure out what the failure mechanism is for overcharging. I'm sure it is connections , but what state the R/R is in would be very helpful.

[bonanzadave]

Jim,

Ive got my old RR which was overcharging. Your welcome to it. Im sure it was due to a corroded connector. It was melted. I installed Duanes kit with new terminals and grounded it to the - batt term with a new battery. It was still over 15 vdc. I did a relay mod for the sense wire and it has now settled down to 14.5 vdc

[posplayr]

Dave,
I have described here before taking an overcharging condition and by simply cleaning connections made it all good. That is the mystery as I don't know what "theoretically" would have caused it. All bad connections should cause undercharging unless there is something else going on .

After the clean up my GS750 is running fine still today with the same stock R/R.
Jim

[bonanzadave]

Dave,
by simply cleaning connections made it all good.

I actually did that by replacing the melted connector and adding the ground jumper. It worked for a while but the damage was done. The RR finally STB. (Sh!t the bed) Im just glad it didnt take the stator with it.