Powerdynamo brings new ignition & light 
to your vintage motorcycle

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alternator to replace tapered shaft 76mm Dynamos (unspecified)


71 96 499 15

price and availability

For universal use in applications with tapered shaft where you do your own adapters.

Please consult dimensions!

Essential properties:
  • 12V/75W output, negative ground (Will be destroyed if subjected to positive ground!)
  • may be used for left and for right turn
  • integrated solid state regulator/rectifier
  • may be used without battery
    requires than however smoothing condenser (see info)
    NOTE: output at start is not enough to make battery based ignition work without battery. Without battery only if bike has magneto based ignition!
  • no internal gears, carbons or other parts subjected to wear and tear
Physical data

  • sturdy plated steel body with alloy end caps
  • diameter: 76mm
  • length of body: 150mm 
  • threading at shaft end for tapered version is (differing to original) M8x1
  • for overall dimensions see drawing here 
  • weight: 2.3kg
  • fixed red plus wire of ca 1m length (to be cut as needed)
Electric data

  • 12V/75W (at 8000 shaft revs which is about 6000 engine speed)
ca. engine
revs
shaft
revs
ca.
watt
1.000 1.400 20
1.500 2.000 40
3.000 4.000 60
6.000 8.000 75
  • negative ground only (will be destroyed if placed on positive ground!)
  • integrated solid state rectifier/regulator converts the generated alternation current into direct current and stabilises it at 14.4V (the norm in 12V systems)
  • if used without battery you need to install a smoothing condenser in place of the battery to get full output.
Instructions     
Photos 
for other makes see