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May 8th, 2011, 03:00 AM   #1
 
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SEM coil interghangability??

Hi all,

After trying a few different things to sort my no spark issues with the old Husky, I was given a third tator to try with one of my three coils.

I have two original Husky SEM stators, black in colour, 5 wire, 1700ohm red to black and 165 ohm green to black, these had been running on the blue SEM coil part number TM14-07

I have since been given a Stator out of a 1995 KTM 300exc, it looks the same as my other SEM units, but this bike has a SEM coil part number TM14-11 etc. I dont know its voltage or resistance values yet.

Does anyone know if I can use this newer stator with the older TM14-07 coil, or will I need to get the TM14-11 coil to suit.

Hopefully I can get the old girl going with a combination of the above, I am going to send a stator and coil to Sparks to rebuild the Stator and check with the coil, then I will have 4 coils and three stators to try and test different things with.

I have been thinking about trying the an Invertor power supply to he Coil and use the trigger signal from my existing stator, as the trigger signal is fine, it is the cap capacitor charge coils which are dead, does anyone know how much voltage I can feed into one of these coils without killing it???
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May 8th, 2011, 05:20 AM   #2
 
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From: Hayle Cornwall

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Re: SEM coil interghangability??

Hi Eugene_Oz,

There are only two types of stator for the Husky and KTM, weather 2 or 4 stroke, all the ignition advance goes on within the cdi/coil. both have 1750 Ohms on Black and Red, the trigger can measure either 23 or 165 depending on what model.
Then there is the direction of rotation and don't forget some of these ignition stators run inverted which means if your engine is running clockwise with an inverted stator the stator is designed to run anti clock wise, the difference being is the way the coil are terminated and connected inside the stator.
You generally find that most of the two strokes run a trigger resistance of 165 Ohms, but not all.
Regarding the cdi/coil the most common one for the four engine is TM14-05, this fits KTM, Husky, Husaberg and VOR.
Regarding the capcitor charge voltage this can be anywhere from 200 to 400 vac.
Be careful if you are using a cdi not designed for your engine especially 2 strokes, holly piston comes to mind.

Regards

Sparks.
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