Goats is when the magnets become dislodged from the rotor, get crushed up and sends tiny flakes and bits of magnet all through the engine. Engine = toast

Thank you kindly, good sir 

yup

Don't feel bad ... people have been [asking this question] for almost 9 years now.  goat's syndrome was named after GStwin user goat, who was the first board member to describe the condition ... back in mid-2004.

[THIS POST] is where it all began.  (It's unfortunate that the photos no longer display....  )

And [THIS POST] is where The Buddha (who went by seshadri_srinath at the time) proposed the name for the condition.

Quote from: The Buddha on July 20, 2004, 07:55:18 PM[...] Shall we call it "goats syndrome" from now on. [...]

Wow goat only had  I have a 93 gs with 6600 miles .

http://gstwins.com/gsboard/index.php?topic=9836.0

I ordered that 2nd generation EX500 rotor used for $150 Ebay(Thanks Adidas).  The only one left! Better then the stupid $280 epoxy one from the Suzuki dealership that will eventually crack off and possible destroy the motor.  Don't feel like walkin 
Also going to upgrade the stator and R/R.

Thx,
Sean

Quote from: Kerry on July 30, 2013, 05:26:42 PM
Don't feel bad ... people have been [asking this question] for almost 9 years now.  goat's syndrome was named after GStwin user goat, who was the first board member to describe the condition ... back in mid-2004.

[THIS POST] is where it all began.  (It's unfortunate that the photos no longer display....  )

And [THIS POST] is where The Buddha (who went by seshadri_srinath at the time) proposed the name for the condition.

Quote from: The Buddha on July 20, 2004, 07:55:18 PM[...] Shall we call it "goats syndrome" from now on. [...]

Much appreciated Kerry,

Now how hard was that people
Have some Karma guys

Quote from: musicmarley on July 30, 2013, 06:18:13 PM
I ordered that 2nd generation EX500 rotor used for $150 Ebay(Thanks Adidas).  The only one left! Better then the stupid $280 epoxy one from the Suzuki dealership that will eventually crack off and possible destroy the motor.  Don't feel like walkin 
Also going to upgrade the stator and R/R.

I don't recall suggesting you buy a Kawasaki unit. I did mention what Kawa did for their gen-2 rotors to solve their problem which apparently was quite common compared to us.

Not sure what you're doing to upgrade the stator. We only have had one type.

Regulator can be upgraded with a MosFet one which I have done on many GS500's.

The problem with our rotors is really quite minor. Very few have had problems, which is probably why no design changes were ever made (compared to Kawasaki which was known for problems and why they changed it). The kawa Gen 2 rotor does not fit on an older EX500 without modifications. I have no idea if it fits on a GS500.

Their rotor was the same "type" meaning the same design of a rotor with magnets glued inside, not physically identical.
They changed the design for the Gen-2 EX500's. I have a 1992 EX500 and purchased a gen-2 rotor that was modified to fit the gen-1 bikes only because it was available and everyone on the EX-500 forums seem to say that is a necessary upgrade.

OEM and aftermarket are not the same with these stators and R/R's.
Not the same epoxy.. not the same construction.  The windings are not the same.
They just hold up better from my experience with other bikes.
Electrosport
Rick.. etc

Okay to be clear the kawasaki one doesn't fit this bike?
You were just stating the other manufacture upgraded to another design.  Looks like Honda's rotors.
Metal protecting the magnets.  Not some crappy epoxy that flakes off in your engine.  Duh

Thx,
Sean

I have not attempted to install a Kawasaki on a GS500. I do know that there are differences on the outside (bumps, stuff, ridges) that have to be ground off to fit a gen-2 into a gen-1 EX500. I have a modified gen-2 part on the shelf for my gen-1 EX-500. I do not have an opened up GS500 motor to see about compatibility. While I do have  a spare GS500 rotor, just comparing the two side by side would not be the proper way to check fitment.

I don't think the end epoxy flaking off is an issue. I've observed that on every GS500 rotor I have seen. I have yet to encounter one with bad magnets.

Update, Bike it working perfectly now.

Okay thanks to this site I saved some money in the process of bringing this bike back to life.
  Not a goat motor so far.. Knock on wood.
The stator and magnets were perfect.  I even went as far as testing the stator with a scope.  1.2ohm, 1.2,1.2 all day.  The rotor was perfect except for some epoxy chunks I removed.
I did get a reading of 3volts AC on each pole.  I unplugged the R/R , the output from it and
the AC voltage jumped up to the correct 25-30volts AC.  Strange I haven't seen a stator output
that when a crappy R/R was plugged into a bike.  SO that's what was wrong with the charging system was the R/R.  I learn something today
Thank you everyone for informing me about the epoxy on the magnets.  Also for saying the charging parts I posted were fine. 

Thx,
Sean