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Burned voltage regulator connector, why? Fix?

in 912 / 914 Technical Questions 8 years ago

  • Re: Burned voltage regulator connector, why? Fix?

    by » 8 years ago

    This is why I ask about the engine age. I have read and seen pictures, but have never personally had one myself. We just talked about this in our March class.

    Roger Lee
    LSRM-A & Rotax Instructor & Rotax IRC
    Tucson, AZ Ryan Airfield (KRYN)
    520-349-7056 Cell

      
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  • Re: Burned voltage regulator connector, why? Fix?

    by » 8 years ago

    Thanks for the clarification Rob.
      
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  • Re: Burned voltage regulator connector, why? Fix?

    by » 8 years ago

    As pointed out in other replies, this is not the voltage regulator connector but the leads from the AC output of the stator. When the connector is clean and tight, no problem, but when even a slight amount of corrosion starts, it goes downhill quickly. Replacing the Molex connector with aviation-grade knife connectors is a good alternate for experimental installs.

    And Rob, while you are posting pictures, and again for experimental installs only, is there any change to the stator itself or can an electrically-competent experimental user replace the affected wiring instead of replacing the red-wire stator?
      
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  • Re: Burned voltage regulator connector, why? Fix?

    by » 8 years ago

    My answer: You cannot repair the wires for a certified aircraft as Rotax does not publish a repair scheme.

    Off the record: It is only a wire repair, but not a simple one. The new stators have tefzel 18G mil-spec wire, each in a separate sheath and sealed at the stator with special high temp potting compound (does anyone know how to buy this stuff?)
    This is a critical system so you need to judge for yourself if you want to carry out a repair on a non-certified engine.
      
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