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Thread: Rotax 914

  1. #1
    Basic Member
    Join Date
    Jan 2011

    Default Rotax 914

    Hello All,
    I'm interested in knowing if any of you current builders are contemplating a 914 installation?
    I know from the Rans website George Happ has built an S19 using this engine and I'm curious if why (or possibly why not) some of you may be considering going this route.
    Also I'm wondering if anyone has access to the performance numbers on George's plane? On the Ran's website it says they would be posted but after a few months of checking I've yet to see them. Does anyone know if George frequents this forum? Cheers and thanks for any/all info in advance.

  2. #2
    Basic Member emflys's Avatar
    Join Date
    Jul 2008
    Folsom, CA


    Hey, George is a member of this site, and also has an S7-S with a 914. You can also call Mark Pringle at Rocky Mountain Kitplanes (Rans Dealer) in Fairfield, UT, who has experience with the installation.

  3. #3
    Basic Member n4tp's Avatar
    Join Date
    Dec 2008
    Wetumpka, Alabama


    George Happ was the first US S-19 (kit built) flying and it has a 914 with a constant speed prop:

    I think you need the constant speed prop to harness that engine, and then you are no longer LSA. So, that is likely the reason.

    George owns MATCO, the company that makes the wheels and brakes that Rans uses. You should be able to contact him through the company email.
    Last edited by n4tp; 02-01-2011 at 04:38 PM.
    Tom Prevost, CFI-AI
    Wetumpka Airport (08A)
    Wetumpka, Alabama
    2011 S-19, N4TP - Completed and flying

  4. #4
    Basic Member flyone's Avatar
    Join Date
    Jun 2009


    Sorry I didn't see your post earlier. The 914 has been pretty much what I'd hoped for. I'm getting over 150 mph TAS at 14500 feet & 75% power. I'm still not able to get 75% power at 18000 so I don't know what the max will be.

    If you are going to go with the 914, be sure to include a constant speed prop. The Rotax guys said it is a 30% difference in performance when operated at low and high altitudes. I'd say that's pretty much on the mark.

    What more can I tell you?


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