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Thread: Engine change

  1. #1

    Default Engine change

    Looking at a couple foxes that are not Rotax. Wondering how hard is it to change engines to a Rotax? From a lycoming or continental? Thanks.

  2. #2
    Senior Member PapuaPilot's Avatar
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    Default Re: Engine change

    I would say it's doable, but definitely a big job. Everything firewall forward will need to be changed including the engine mount, cowling, prop, electrical. Most likely you will need to change the wing sweep too for CG reasons.

    What would be the reason for removing a Lycoming or Continental?
    Phil Nelson
    A&P-IA, Maintenance Instructor
    KF 5 Outback, Cont. IO-240
    Flying since 2016

  3. #3
    Senior Member av8rps's Avatar
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    Default Re: Engine change

    If it's a Model 4, easy if you purchase the 912ul firewall forward package that is currently listed in the classifieds of this site. But that isn't always available.

    Not a sales pitch. Just answering the question.

  4. #4
    Senior Member Flybyjim's Avatar
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    Default Re: Engine change

    How would one change the sweep of the wing that is already drilled, would you just change the four plates in the root of the spar? Curious.

  5. #5
    Senior Member
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    Default Re: Engine change

    Just a guess, but maybe by mounting the battery behind the seat as far as you could, you wouldn't need to change the sweep. How much does the sweep really move the CG forward? 1"? 2"? I don't imagine it's a whole lot. JImChuk

  6. #6
    Senior Member ken nougaret's Avatar
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    Default Re: Engine change

    I have an o-200 in mine with NO wing sweep. The battery is behind the seat and the balance is perfect.
    Ken
    SS7 O-200 Whirlwind

  7. #7

    Default Re: Engine change

    Ok, thanks. Series 7. Just considering the options out there...

  8. #8
    Senior Member
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    Default Re: Engine change

    I misspoke in my previous message, I said "moves the CG forward" Should have said "moves the CG rearward, or datum forward" JImChuk

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