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New stator but my voltage is dropping

  • Thread starter Thread starter coltrain
  • Start date Start date
TheCafeKid said:
Better question. Did you replace the stator with the CORRECT stator? There were TWO different stators (actually THREE if you count the big ones the 1100s later on used) a 12 pole and an 18 pole. If youve got a 12 pole stator in an 18 pole rotor, you're not going to get the proper voltage. If the stator is testing good from the stator only, then something is up with this.
Click to expand...

Very good point there! I dont know how to tell which pole this is? Still should put out 60v+ thought eh? I bought it off of ebay and my bike was listed in the application and I even specified in the transaction. $101 or something - I shot off an email to rmstator and hope I get back some news!
This is really the last piece to the puzzle with me finishing the mechanics on this thing!
 
TheCafeKid said:
No, its not LARGER, it simply has more or less poles, and the charging rotor that rotates around it has positive and negative magnets to corospond to the number of poles on the stator. If they arent matched up, it wont be "on-off" right.
Click to expand...


In that case would you be able to see 2 circles on the rotor because it has 2 magnets ? Or hold a peice of metal near the rotor and see if its atracted to 2 spots on the rotor and not 1 ?
Being fairly new to these bikes I havent come across this yet so I'm learning.
 
I think it was determined that a 18 pole stator had a rotor with 3 magnets and a 12 pole one with 2 magnets forming a circle. You will be able to see the magnets.
 
Run a screwdriver or somthing steel around the inside of the rotor. Note where you start. There should be, with the 12 pole set up, 6 points of attraction. With the 18 pole, there should be 9, i believe.
 
I feel better now

I feel better now

I read this on electrosport's site. A tech note on the page with the RR's

"NOTE: These 8-valve GS750 models have a 12-pole three phase stator that has identical dimensions to the later 18-pole units (=ElectroSport ESG010). You can use an ESG010 in these older 8-valve models, but you will have to use the later model (80-83) GS850 flywheel. If you fail to change the flywheel the number of magnet poles does not match the stator and you will have NO OUTPUT from your new 18-pole stator."

I do believe that is my problem! 850 Flywheel anybody? ha! I will get the right stator, but in the meantime I know the screws were all sorts of stripped out when installing. I need new screws again.. Any suggestions? Know where to allen heads?
 
coltrain said:
I read this on electrosport's site. A tech note on the page with the RR's

"NOTE: These 8-valve GS750 models have a 12-pole three phase stator that has identical dimensions to the later 18-pole units (=ElectroSport ESG010). You can use an ESG010 in these older 8-valve models, but you will have to use the later model (80-83) GS850 flywheel. If you fail to change the flywheel the number of magnet poles does not match the stator and you will have NO OUTPUT from your new 18-pole stator."

I do believe that is my problem! 850 Flywheel anybody? ha! I will get the right stator, but in the meantime I know the screws were all sorts of stripped out when installing. I need new screws again.. Any suggestions? Know where to allen heads?
Click to expand...

McMaster Carr, or Fastenal. Both have online stores. You'll simply need the dimensions of the bolt you need. And, they'll be stainless, not that it matters cos they'll be constantly bathed in oil...
 
One other thing to check is, the leg wires. After putting in a new RMStator into my 82 1100L I ran fine for about two weeks, then started having charging issues again. What I found is that the wires soldered onto the stator to extend the legs out had cheap casings. Where they went though the oil plug grommet in the stator cover, they had actually started to short together so that my stator resistance was showing as .2 ohms instead of the .5-.8 ohms it should have been. However when I removed and separated the wires the resistance went up to the specified resistance. So rather then having to order a whole new stator, I just got some good wire from Auto Zone and soldered new legs onto the stator after removing the old.
 
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