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Thread: Voltage regulator on engine side?

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  1. #1
    Senior Member Esser's Avatar
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    Default Voltage regulator on engine side?

    Sorry for the load of electrical posts but I’ll be bugging everyone for a bit.

    Is there an issue with putting the voltage regulator on the engine side of the firewall? Or is my only option to extend the shielded wires off the internal alt.?
    ------------------
    Josh Esser
    Flying SS7
    Rotax 914iS
    AirMaster Prop

    Edmonton, AB, CWL3

  2. #2
    Senior Member jrevens's Avatar
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    Default Re: Voltage regulator on engine side?

    I believe that many people have located them on the engine side. Perhaps there is more potential heat there, especially after shut down, but that is mitigated by air flow when the engine is running. Air flow is good. I put my Silent Hektik unit behind the firewall and extended the leads. That's where my over-voltage relay and capacitor are, so it made more sense to me to group those together, wiring wise, and the SH unit has a higher amperage rating as well as more heat-sink area than the Ducati.
    John Evens
    Arvada, CO
    Kitfox SS7 N27JE
    EAA Lifetime
    Chap. 43 honorary Lifetime

  3. #3
    Senior Member AirFox's Avatar
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    Default Re: Voltage regulator on engine side?

    I put my voltage regulator on the firewall above the Battery so it is in the air flow. It is working out much better than behind the firewall. Also the Rotax connector has caused some people issues. I just installed connectors right to the blades on the voltage regulator.

    good luck Josh.
    Scott Noble
    Kitfox SS7

  4. #4
    Senior Member jiott's Avatar
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    Default Re: Voltage regulator on engine side?

    John, where and how did you get your hands on that Silent Hektik regulator. You must know someone who bought it for you in Europe, the sent it to the US privately?
    Jim Ott
    Portland, OR
    Kitfox SS7 flying
    Rotax 912ULS

  5. #5
    Senior Member jrevens's Avatar
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    Default Re: Voltage regulator on engine side?

    Quote Originally Posted by jiott View Post
    John, where and how did you get your hands on that Silent Hektik regulator. You must know someone who bought it for you in Europe, the sent it to the US privately?
    Yes, I think I wrote about that on my build thread. I have a friend who goes to Holland frequently - his wife is from the Netherlands, and he knew a RANS builder there who was willing to buy one and ship it here.
    John Evens
    Arvada, CO
    Kitfox SS7 N27JE
    EAA Lifetime
    Chap. 43 honorary Lifetime

  6. #6

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    Default Re: Voltage regulator on engine side?

    put it on the engine side.

    if the regulator burns out the fumes are toxic

    D Kelm

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