Powerdynamo brings new ignition & light
to your vintage motorcycle



Technical Help



System 634 61 799
=> /$

12 volts generator/electronic ignition for JAWA 634  and CZ 471   Twins

for 6 Volts system see system 634 62 799  (better use 12V!)

Magneto based generator with integrated fully electronic ignition. Output 12V/150W DC. Solid state ignition with own power supply from within the system. Replaces old dynamo, points, condenser, ignition coils. You may drive without a battery, if you want. There is no need for changes on engine casing.

Should your motorcycle have an electronic tachometer (as a few 634 versions had), than this tach will not work with the new system. See our information on electronic tach with this system.

The system can be used for CZ471, but you have to take the crank pin out as timing is different (see instructions)
advantage over original system
  • all parts are new
  • more light output
  • very stable ignition with solid spark
  • better starting, better fuel burning
  • no hassle anymore with setting points