Stator Trigger Voltage

Bigbugberg · Nov 14, 2005

Ok, here goes...

Bike dies (2000 FE400 serial number 3!!!), bring it home and troubleshoot it to the stator (it had an open between red/black). Got a new stator (KTM part number stator listed in previous forum posts). Still no spark. Went to a buddies house (Berger) to eliminate the coil being bad. Coil is good. Read more forum posts and see Lineaweaver claims the trigger voltage should be 3-5v. My new stator does not have this high of trigger voltage.

My question is does the position of the stator on the cover (timing) affect the output of the trigger voltage? The stator has all the correct resistance and pumps out 30v across red/black but only outputs 1v at the trigger.

Does the KTM stator have a different trigger voltage? Does the KTM stator have a different trigger angle?

Is there anything I am missing (besides a good stator)?

nzberg · Nov 14, 2005

If you are testing with a multi meter you are probaly getting the correct readings in a post from i think alan he uses amulti meter and he discribes the needle giving a good strong tug i have also used the multi meter and the neelde usually tugs to 30 to 40 volts ac to test you need a peak voltage meter the trigger voltage should be between 1.5v and up to15 volts wheen engine is running and reved the source or charge coil needs to put out 100v to fire bike and when running goes up to approx 150v most peak meters also test coil output no load which would be 10000 to (ktm 400 exc tuning over with starter( 45000 volts japs usually 30000 husabergs 20000 to 30000 these meters can also be used when engine is running idle 5000 to 10000 as throttle opens reading goes up then drops back i hope this helps a little

nzberg · Nov 14, 2005

just a thought but is the ktm stator sitting as far into the fly wheel as the old unit- the position of the stator will not effect voltage just the point that the plug fires but if the stator is not close enough to the flywheel the magnetic forces acting on it will be weaker

JoeUSA · Nov 15, 2005

I have 3 defective SEM stators for a 2000 FE 501E Husaberg. Their G-B unloaded (not connected to the CDI) outputs using the electric starter are:

3.0 VAC
3.1 VAC
3.0 VAC

These are maximum readings using a Max Hold function on a Multimeter.

Have you verified the G-B resistance values to be 168 +- 10 % ohms?

All 3 of these stators failed with open R-B coils.

Hope this helps,

Joe

Bigbugberg · Nov 17, 2005

Success!!!! sort of...

I have a nice spark! But she still won't fire. I notice if I move the stator CCW from rotation, the spark is less consistent. If I move the stator to the max position CW (with the crank) the spark is more consistent. Where should the stator be???

BTW, the only way I could get a spark was to solder all my connections. I tested the wires on the other side of the connector and they measured good but no spark. Cut out the connetor and soldered the wires, BINGO!!!

I now hope to find some posts on ignition timing.

JoeUSA · Nov 18, 2005

Here is the page you want (page 11) from the 1999 Workshop Manual.

Joe

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Stator Trigger Voltage

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