Stator tech?

[born2lose]

So I recently replaced my stator and R/R and put a brand new battery in it still no charging.


So I then decided that it was time to go over my wiring with a fine tooth comb. Nothing seemed to be out of place and everything seemed hooked up properly and for the ground to the R/R I went straight to the neg. post of the battery.

This lead me to the testing of the BRAND NEW PARTS THAT I JUST BOUGHT.

So I did the ohm test in between the wires coming from the stator, they were 1.3-1.5.

Next I tested the ohms from a wire off the stator to a chassis ground, there were no ohms .

So feeling confident I started the bike in order to test the output of the stator. I put one probe to a stator wire and the other probe to another stator wire, it was around 2.X AC volts at idle (1100 rpm's) and 5.X at 5000 rpms. If I am understanding this test right, I want to have 65-90 (depending on what tech article I am reading) of Ac volts.


So then with the bike running I tested the output of the R/R from the red wire, it was about 5.x volts of DC at idle, 10.x at 3000 rpms and 8.x volts at 5000+ rpms.


Which brings me to the conclusion that the stator isnt putting out enough output, the R/R would probably work if the stator was putting out proper watts.



These are pics of the new vs. old stator

















My question is, it seems to me that the size difference in the new vs. old is the problem.

Or can someone see something in the pictures that I could fix in the new stator that would make it work.

Admittedly I am no stator guy or electric guru, so I dont completely understand the wizardry that happens in the stator cover so I was hoping someone that was could help shed some light on this for me.


This is where I got the stator from

http://www.ebay.com/itm/270686507541?ssPageName=STRK:MEWAX:IT&_trksid=p3984.m1423.l2649


This is the where i got the R/R from

http://www.newmotorcycleparts.com/electrical/charging_parts/regulators_and_rectifiers.html ..............Type 1
FITS MOST SUZUKI GS250-GS1100 '77-'82
WITH 4 INDIVIDUAL WIRES AND ONE GROUND WIRE


As always thanx for any and all replies

 

[Steve]

Your old stator (assuming it's the one on the left) is a 12-pole stator.
Your new stator is an 18-pole stator, they are NOT interchageable.

I don't currently have any 12-pole stators for you, but can probably get one soon enough, if you can't find one.

.

 

[born2lose]

Your old stator (assuming it's the one on the left) is a 12-pole stator.
Your new stator is an 18-pole stator, they are NOT interchageable.

I don't currently have any 12-pole stators for you, but can probably get one soon enough, if you can't find one.

.

See I wasn't sure if that mattered or not, I assumed they all worked off the same principles and put out the same amount of power.

So do you need a core for stator cuz I happen to have one

 

[born2lose]

Yes the old stator is on the left

 

[Steve]

See I wasn't sure if that mattered or not, I assumed they all worked off the same principles and put out the same amount of power.

So do you need a core for stator cuz I happen to have one

Yes, they all work off the same priciple, but that principle also involves timing and coordination. With the different number of poles in the stator, the poles in the magnets don't come by their matching stator poles at the right time.

Yes, if you want to send the core first, I will get it re-wound as quickly as possible. I happen to have another batch ready to re-wind, so timing is great.

.

 

[brownford]

What year/model are you working on?

 

[born2lose]

Yes, they all work off the same priciple, but that principle also involves timing and coordination. With the different number of poles in the stator, the poles in the magnets don't come by their matching stator poles at the right time.

Yes, if you want to send the core first, I will get it re-wound as quickly as possible. I happen to have another batch ready to re-wind, so timing is great.

.

Can you pm me an address we'll get this cog in motion?

 

[born2lose]

what year/model are you working on?

77-78 gs750

 

[born2lose]

Steve I pm'ed you

 

[brownford]

I'm not very educated when it comes to stators and such. Is the ebay ad incorrect in claiming that an 18 pole stator is used on your bike? Is the permanent magnet configuration different between 12 and 18 pole stators? On edit:Steve already answerd my question about the pm configuration.

 

[born2lose]

I'm not very educated when it comes to stators and such. Is the ebay ad incorrect in claiming that an 18 pole stator is used on your bike? Is the permanent magnet configuration different between 12 and 18 pole stators?

I wonder is there a model of gs that uses the 18 pole stator ?

 

[posplayr]

I'm not very educated when it comes to stators and such. Is the ebay ad incorrect in claiming that an 18 pole stator is used on your bike? Is the permanent magnet configuration different between 12 and 18 pole stators?

The rotor has magnets that are aligned and in the proper number to match the stator. If it is 12 pole stator it needs the 12 pole rotor. If it is 18 pole stator it needs the 18 pole rotor.

I think you can replace a 12 pole rotor with an 18 pole rotor (it fits the bike) in which case if you swap the rotors to match as above you are good to go.

The 18 poles provides a higher and smoother voltage output.

 

[brownford]

I wonder is there a model of gs that uses the 18 pole stator ?

I think the 18 is more common than the 12.

 

[born2lose]

Would the 77 gs750 have a 12 and a 78 have an 18 pole stator?

 

[Steve]

I wonder is there a model of gs that uses the 18 pole stator ?

Virtually all of them, starting with the '80 model year.

Would the 77 gs750 have a 12 and a 78 have an 18 pole stator?

No, see above.

.

 

[born2lose]

Virtually all of them, starting with the '80 model year.


No, see above.

.

I see, most of the stators I saw for sale were 78-80. They seem to leave out 77, so I thought maybe the 77 was the only gs with a 12 pole.

I saw something were a guy said he used a rotor for a 18 pole off a gs550, on a 750.

Would that be a option?

 

[Grimly]

Would the 77 gs750 have a 12 and a 78 have an 18 pole stator?

As far as I know, they were all 12-pole until the 79/80 model change then went 18-pole. The first stator I changed out, caught me out in exactly the same way.
My '79 now has an 18-pole engine in it, but when /if I ever rebuild the '79 (just for a degree of orignality, it would be nice to have the kickstart engine in it again) I will be putting an 18-pole rotor and stator in it, too.

 

[born2lose]

As far as I know, they were all 12-pole until the 79/80 model change then went 18-pole. The first stator I changed out, caught me out in exactly the same way.
My '79 now has an 18-pole engine in it, but when /if I ever rebuild the '79 (just for a degree of orignality, it would be nice to have the kickstart engine in it again) I will be putting an 18-pole rotor and stator in it, too.

Yeah that kick start came in handy for me as of late.