Powerdynamo brings new ignition & light
to your vintage motorcycle



Technical Help



system 72 38 799 AC
=> €/$

for Yamaha DT1/2/3, RT1/2/3, DT250/360/400, TY250, YZA250

Magnet based generator with integrated solid state ignition. Output 12V/70W AC. Replaces the complete old magneto system. Solid state, maintenance free, electronic ignition.

There is no need for changes on engine casing.

For DC system see 72 38 799 DC

Please note: This system was made to replace the Mitsubishi magneto (as delivered mainly to the US market).
There was a second magneto, made by Hitachi and used from 1977 onwards mainly for the UK, Canadian and other markets and here the crankshaft and hence magneto fitting might be differing.
Important remark: All AC systems are made for use in offroad sports and do neither support battery charging nor side indicators. You may therefore not normally use it on public roads (unless your local regulations permit). Consult your local road traffic regulations for use in normal traffic. Should you need side indicators and/or battery, ask for a DC version of the system. for that here
Advantage over original system:
  • all parts are new
  • more light output
  • very stable ignition with solid spark
  • better starting, better fuel burning
  • no wear anymore on points