First to say I didn't read any of those "replys" , as far as I know all the Jawa's hawe electronic problems.
The engine is same as my TS Jawa.
The best solution for electronics and charging on this bike is the next:
find a used alternator from some old car, we used "Fiat", because it is smallest;
place it under a seat or right behind the carb, Take off rotor and stator from engine,
put the small belt drive on its place,we welded it on, it easy, drill two holes on the side cover for the belt.
it would solve all yours Jawa electronic problems, I can provide you some pictures in couple next days if you are willing to do this.
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