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  1. #1

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    Converting 5 pin AC CDI to 4 Pin DC CDI any good?

    Hi
    Oorcacing is selling 4 pin dc cdi and they have a video about how to convert 5 pin ac cdi to 4 pin dc cdi. Is it any good?

    anyone done it.

    Any performance gain or improvements?

    Also can we use same spark plugs and the ignition coil with this cdi? Or does dc cdi require different ignition coils?


    Regards


    Sent from my Nexus 5 using Tapatalk

  2. #2
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    Quote Originally Posted by chamjiee View Post
    Hi
    Oorcacing is selling 4 pin dc cdi and they have a video about how to convert 5 pin ac cdi to 4 pin dc cdi. Is it any good?

    anyone done it.

    Any performance gain or improvements?

    Also can we use same spark plugs and the ignition coil with this cdi? Or does dc cdi require different ignition coils?


    Regards


    Sent from my Nexus 5 using Tapatalk
    The coil and plug will be fine. My understanding is that ac. requires a battery to run where as dc current is supplied by the magneto. Is there reason for doing this to eliminate a flat battery, or what was there reasoning for doing this?

    Sent from my SM-G930F using Tapatalk

    IF IT AIN'T BROKE, BREAK IT

  3. #3

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    Pretty sure ac is supplied from the magneto, hence why you need a voltage rectifier to use a battery. Battery supplies and requires dc. Most motors donít have a battery to begin with unless itís an electric start motor.
    As mentioned, coils and plugs are fine.
    If you donít already have a battery circuit, you will likely need to instal a voltage rectifier to get proper dc voltage.


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  4. #4

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    I do have battery and rectifier. Firstly I wanted to make sure that existing coil and cdi can be used. Secondly and most importantly I wanted to know if it's any better then ac cdi system?

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  5. #5

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    Can someone help me wire it up?


    Sent from my Nexus 5 using Tapatalk

  6. #6
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    Quote Originally Posted by CookieMonster View Post
    Pretty sure ac is supplied from the magneto, hence why you need a voltage rectifier to use a battery. Battery supplies and requires dc. Most motors donít have a battery to begin with unless itís an electric start motor.
    As mentioned, coils and plugs are fine.
    If you donít already have a battery circuit, you will likely need to instal a voltage rectifier to get proper dc voltage.


    Sent from my iPhone using Tapatalk
    You are correct mate. Brain fade lol

    Sent from my SM-G930F using Tapatalk
    Last edited by rotn50; 05-01-2018 at 08:16 AM.

    IF IT AIN'T BROKE, BREAK IT

  7. #7

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    Quote Originally Posted by rotn50 View Post
    You are correct mate. Brain fade lol

    Sent from my SM-G930F using Tapatalk
    As mentioned I do have battery and rectifier already installed and working.

    Can I have the wiring diagram?

    Sent from my Nexus 5 using Tapatalk

  8. #8
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    Quote Originally Posted by chamjiee View Post
    As mentioned I do have battery and rectifier already installed and working.

    Can I have the wiring diagram?

    Sent from my Nexus 5 using Tapatalk
    I'd just purchase the appropriate harness for the cdi mate. Other then that you will need to Google the diagram.

    If it ain't broke, break it.

    IF IT AIN'T BROKE, BREAK IT

  9. #9

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    Quote Originally Posted by rotn50 View Post
    I'd just purchase the appropriate harness for the cdi mate. Other then that you will need to Google the diagram.

    If it ain't broke, break it.
    I Googleed and wired this cdi and bikes starts.
    However how can I use a kill switch with it.


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  10. #10
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    Quote Originally Posted by chamjiee View Post
    I Googleed and wired this cdi and bikes starts.
    However how can I use a kill switch with it.


    Sent from my Nexus 5 using Tapatalk
    You could run a wire off the pickup wire from the cdi as the positive to the black and white wire on the killswitch and then earth the green wire from the killswitch to the frame.

    If it ain't broke, break it.

    IF IT AIN'T BROKE, BREAK IT

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