1. Husqvarna Motorcycles Made In Sweden - About 1988 and older

Will a cheap Chinese CDI work with a Motoplat stator?

Discussion in 'Vintage/Left Kickers' started by Leigh Roberts, May 4, 2020.

  1. Leigh Roberts Husqvarna
    AA Class

    Husqvarna Motorcycle:
    1981 CR430
    Other Motorcycles:
    KTM EXC450, SWM RS650R
    There have been numerous mentions of using cheap Chinese CDI and coil replacing SEM CDI/coil parts. It's cheap (~$10) and give a stronger spark at kick start speeds than SEM. No advance curve, just like the original SEM.

    For example here.
    http://www.cafehusky.com/threads/pvl-ignition-advice-500-lc.30878/page-4

    I see one person asked if it would work with a Motoplat too. I think not.

    I ordered one to try with my Motoplat external rotor. Didn't work, probably because the Motoplat has much lower charge voltages than normal stators. ~50V instead of 400V. Also the charge and trigger coils generate the same sort of voltages, perhaps Motoplat is unique in this way.

    Happy if someone can tell me they've tried and got it to work.

    BTW I found the best resource for test measurements for Motoplats here
    http://uk-motoplat.com/testing/

    I think this might be an accurate circuit showing what is inside Motoplat CDI/coils
    http://uk-motoplat.com/testing/
    ajcmbrown and Dirtdame like this.
  2. ajcmbrown Husqvarna
    Pro Class

    Location:
    Metung Victoria Australia
    Husqvarna Motorcycle:
    400WR 250WR 07 WR500 430AE 360AE
    Other Motorcycles:
    1985 500CR Ducati Multistrada 1200S
    I'd be interested to know as well.
  3. stormer254 Husqvarna
    AA Class

    Location:
    England
    Husqvarna Motorcycle:
    More than I dare let her know
    Other Motorcycles:
    Yes!
  4. Michel Dufayard Husqvarna
    Pro Class

    Location:
    France