Your regulator/rectifier burn out?

JoshuaTree · 12-01-2008, 12:35 AM

"Normally" the regulator/rectifier pack is the failure point in most motorcycle charging systems. It is simply reassuring to know if there is a voltage test for the stator/rotor output that would eliminate any doubt about the health of the coils in the stator. A resistance test is fine, but nothing would beat a voltage output check.

At this point, I'd go ahead and get a new R/R pack, and see what you get.

Gas Man · 12-01-2008, 07:42 PM

Yeah usually if the stator tests fine then its the rectifier

No Worries · 12-03-2008, 04:45 PM

The GS series of Suzuki engines from the late 70's to mid 80's are pretty much bulletproof. But the charging system is problematic. A lot has to do with the grounds that don't because of corrosion. The best article I've seen on how to test a regulator, rectifier (my GS1000 came with separate regulator and rectifier), and stator is the famous "Stator Papers" on the GS Resources site: http://www.thegsresources.com/garage/gs_statorfacts.htm.

Rick's Motorsport Electrics, and Electrex make great electrical components. They can be had out of the Parts Unlimited book at your local shop.

RACER X · 12-03-2008, 05:48 PM

i wired up 2 small computer fans over the R/R and when the bike is on the fans are on.

i've had 1 R/R go bad.

No Worries · 12-03-2008, 07:08 PM

Quote:

Originally Posted by RACER X

i wired up 2 small computer fans over the R/R and when the bike is on the fans are on.

i've had 1 R/R go bad.

Good idea. There's never enough airflow over the R/R.

HRCNICK11 · 12-07-2008, 11:21 AM

Also make sure you have a very good contacts at the 3 yellow wires plug. They tend to melt and over heat and take out the R/R if not.

Also make sure you mount the R/R to the stock location normally a piece of alumimum is there that transfers the heat away from th unit. I have seen lots of guys move them to a plastic mount or even leave them loose and then wonder why they keep going bad.

Do not charge a dead battery with your bike. Inother words if you ahve to jump start your bike take the battery off and use a charger not the bike to charge the battery. It over taxes the R/R.

Consider a larger heatsink Alumimum piece behind the R/R and or use a heat conductive liquid between them. (white stuff found between a transistor and heat sink) Can be bought at radio shack.

The fan is also a great idea. I had a F3 that would eat them and I installed a F4 R/R because it had a larger heatsink attached to it the F3 did not have any fins on the R/R.

Also make sure that new pipe is not putting more heat near the R/R. A lot of guys remove things like heat sheilds (sometimes a thick rubber mat) from there bikes cause they think its not for anything special. Its a heat sheild thats flexible. Be sure not to remove them.

12-01-2008, 12:35 AM	#1
JoshuaTree DILLIGAF? Join Date: Nov 2008 Location: Austin, Texas, USA, Earth, Sol, Western Spiral Arm, Milky Way Moto: 1993 K75SA Posts: 483	"Normally" the regulator/rectifier pack is the failure point in most motorcycle charging systems. It is simply reassuring to know if there is a voltage test for the stator/rotor output that would eliminate any doubt about the health of the coils in the stator. A resistance test is fine, but nothing would beat a voltage output check. At this point, I'd go ahead and get a new R/R pack, and see what you get. __________________ "Quis custodiet ipsos custodes?" "Learn to do the counter-intuitive things that may one day save your ass..." "... Love Much, Laugh Often..." - Amanda Kay Corso (January 18, 1980 - April 15, 2008)

12-01-2008, 07:42 PM	#2
Gas Man Trip's Assistant Join Date: Feb 2008 Location: Imported from Detroit Moto: 2009 HD Street Classic Posts: 12,149	Yeah usually if the stator tests fine then its the rectifier __________________ -Chris "Why pay somebody else to fuck up your bike?" Run Amsoil Product

12-03-2008, 05:48 PM	#4
RACER X AMA Supersport Join Date: Nov 2008 Location: Richmond, Tx Moto: '10 Tuono Factory Posts: 4,569	i wired up 2 small computer fans over the R/R and when the bike is on the fans are on. i've had 1 R/R go bad. __________________ ΜΟΛΩΝ ΛΑΒΕ 2014 GROM! 181cc of FURY 2010 Aprilia Tuono Factory - SOLD 2009 SFV Gladius - SOLD 2008 Hayabusa - SOLD.

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12-03-2008, 04:45 PM	#3
No Worries Keyboard Racer Join Date: Feb 2008 Location: Mile High City Moto: Old Superbikes Posts: 1,016	The GS series of Suzuki engines from the late 70's to mid 80's are pretty much bulletproof. But the charging system is problematic. A lot has to do with the grounds that don't because of corrosion. The best article I've seen on how to test a regulator, rectifier (my GS1000 came with separate regulator and rectifier), and stator is the famous "Stator Papers" on the GS Resources site: http://www.thegsresources.com/garage/gs_statorfacts.htm. Rick's Motorsport Electrics, and Electrex make great electrical components. They can be had out of the Parts Unlimited book at your local shop.

12-07-2008, 11:21 AM	#6
HRCNICK11 Canyon Carver Join Date: Nov 2008 Posts: 429	Also make sure you have a very good contacts at the 3 yellow wires plug. They tend to melt and over heat and take out the R/R if not. Also make sure you mount the R/R to the stock location normally a piece of alumimum is there that transfers the heat away from th unit. I have seen lots of guys move them to a plastic mount or even leave them loose and then wonder why they keep going bad. Do not charge a dead battery with your bike. Inother words if you ahve to jump start your bike take the battery off and use a charger not the bike to charge the battery. It over taxes the R/R. Consider a larger heatsink Alumimum piece behind the R/R and or use a heat conductive liquid between them. (white stuff found between a transistor and heat sink) Can be bought at radio shack. The fan is also a great idea. I had a F3 that would eat them and I installed a F4 R/R because it had a larger heatsink attached to it the F3 did not have any fins on the R/R. Also make sure that new pipe is not putting more heat near the R/R. A lot of guys remove things like heat sheilds (sometimes a thick rubber mat) from there bikes cause they think its not for anything special. Its a heat sheild thats flexible. Be sure not to remove them.