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Joel in the Couve

 

The stator could be faulty - sounds like high speed coils have given up the ghost . CDI unit also worth checking out.



Just a thought - hope it helps.

 

...I've read the stator controls the motor in 3 different rev ranges. Is this true? Is there a way to test it? I bought an after market stator but it doesn't have as many wires as the stock one...

The stator has 2 ignition windings on it that are for producing voltage for the CDI,,the rest of the windings are for charging the battery. There is a low speed winding (start - 5000rpm) and a high speed winding (5000+ rpm).



The diagram below shows the resistance values you should expect to see on a good stator.

If you roll the engine over with spark plugs out and the key and kill switch in the run positions and check the voltage on the blue wire(#8) with a multi-meter set to 120 ACV you should ideally see 100 volts AC, positive lead on the blue wire, neg lead on the neg battery post. You should have 90 volts on the white wire(#9). These numbers could be maybe 20 volts or so less and still be OK.



The other stator you bought is probably for a bike with TI type ignition(not CDI), and would not have the ignition windings on it.

 

one of the stator high/low circuits is probably faulty. does it get worse as the bike heats up?

 

The windings are coated with a shellac resin and this can break down with heat. It will probably get progressively worse over time.

Just a thought - hope it helps

 

 

I did all the tests. The 2 tests where you turn the motor over and check voltage came out good. On the static tests. Ohms on 8/9 are 662 and 5/9 is 659, both way over what I'm supposed to have. This sounds like the low speed coil.I think I should have gotten a Haynes manual instead of a Clymer. It starts and runs fine at low speed. Just not past 4500. Any ideas?

 

If those numbers are correct,,I would double check them to be sure, it would seem that the ignition windings on the stator are bad.



You could either find another G47 stator and replace it,,or buy an Ignitech unit that replaces your CDI. The Ignitech CDI does not get power for ignition from the stator, it draws power from the battery.



As long as your stator is charging the battery you could just plug in the Ignitech and should be good to go.



If the aftermarket stator you bought is a G8 stator(for a TI type bike, no ignition windings on it) you could hang onto it and if the stator that is in your bike now ever stops charging the battery, you could replace it with the G8 stator, since the Ignitech does not need a stator with ignition windings on it.



I think there is a group buy going on soon for ignitechs through the forum and one of the members here "Cobram". Look in the buying and selling section of the forum or contact Cobram.



I think the Ignitech through the group buy is around 165.00,,if you buy one directly from the company it is about 225.00 or something like that.



If you do buy an Ignitech you could probably sell your old CDI to recoup some of the money.

 

Thanks for all the help guys, going to look into getting one of those Ignatech units. Appreciate it