Powerdynamo brings new ignition & light 
to your vintage motorcycle



Technical Help



System 72 90 499 00

generator for wartime BMW R75, generator only, no ignition

This is a follow up system for 70 85 999 00.  Main difference is that the difficult to adjust pickup in the tower was done away.
Magnet based generator, output at 12V/180W DC. Replaces old Noris dynamo with regulator. The system is technically capable of running without battery. No changes on engine casing needed.

Regulator has to be mounted outside the engine.

Advantage over original system
  • all parts are new
  • solid state ignition and advance
  • more light output (with light bulb 40/45W)
  • very stable ignition with solid spark
  • better starting, better fuel burning
  • no wear anymore on collector, govenor and points
please note This is a replacement system, not a 1:1 copy of the stock material (if you want this you will need to address BMW). We use the main components also in other similar systems as only multi use material enables us to offer a resonable price, especially on such rather complex constructions.

The housing is made of aluminium, hence alu-coloured. The seat area for the (not delivered) front cover is different. See dimensions here. Fastening holes for the cover are (from oct 18th on) M5 and are horicontally spaced by 76mm. The wire exits the tower at rear.

The system can not be used in KS750, even though the stock systems may be same. Ouzr systems differ in one critical dimension.