Over charging question

[joesigns]

I am running a 1982 GS1000sz with the charging system intact. This a race bike, so no lights, blinkers, etc. The output is hovering around 16v at the battery. I pulled 1 of the 3 legs and am getting around 15.7v I pulled 2 and the system doesn't charge. Replaced the rectifier with same results. What is a quick fix my situation? Thanks for any input. Joe

[Suzuki mad]

Have a read through here. It may help.

http://www.thegsresources.com/garage/gs_statorfacts.htm

Stolen from Bassclifs web site......

[OldVet66]

If the replacement R/R was good, I think I would look at the grounds first. Using a stainless steel star washer on both sides of the ground terminal helps insure a good connection. I replaced the motor to the battery ground with heavier wire, and have the ground from my compufire unit directly to the battery in addition to the case of the unit being grounded directly to the frame and the stock ground points. You are in battery frying territory with those voltages.

[mike_of_bbg]

What did you replace your original r/r with?

[posplayr]

What did you replace your original r/r with?

sounds like someone wired in a honda 6 wire and left the sense open

[OldVet66]

I forgot to say that the stock system was designed assuming a load for the headlamp and tail light. Two stator leads should charge it properly. Three will overcharge it. Before the Headlight always on laws Suzuki switched off one stator leg with the headlight.

[mike_of_bbg]

I forgot to say that the stock system was designed assuming a load for the headlamp and tail light. Two stator leads should charge it properly.

Good call. Mr. Posplayer is probably also on to something.

[joesigns]

stock r/r replaced with stock r/r. I'll check my grounds.

[posplayr]

stock r/r replaced with stock r/r. I'll check my grounds.

If you are using an old style R/R that only has one SCR on one leg, they can overcharge because they can only limit the single phase as you were doing when you removed a single phase. Because the are no lights and other loads, that may not be enough but pulling the second phase is too much.

Get a later model R/R that has SCR's on all three stator legs and see if it can regulate down. The 83 ED's have 3 SCR's, the 81 GS750 was a single as I recall.