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  1. #26

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    RE: Hot rodding a Zenoah GT80??

    He thinks (?) that it will be too heavy to do rolling harriers and to hover. Cause that's what you do with airplanes.
    K-Bob. The K is silent. \"The only time you can have too much fuel is if you are on fire\"

  2. #27

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    RE: Hot rodding a Zenoah GT80??

    That's what you do TO airplanes.
    Warbirds are meant to fly! Not just stay aloft.
    Pe, (www.mvvs.nl), MVVS, MOKImotor, RCexl, MTW, Xoar, Mejzlik.
    Blessing in ignorance? There is sanctuary in analysis.

  3. #28
    AraTidwell's Avatar
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    RE: Hot rodding a Zenoah GT80??

    I had no idea it was for a war-bird. When H9 came out with my 33% Cap, they were pushing the GT-80. I put a BME 102 in the airplane that was 3lbs lighter and 20% more powerful. The BME has a bare weight of 4.0lbs. Plane balanced fine, infact to get it to fly the way I wanted it still needed a little tail weight.
    THIS PILOT OBEYS THE LAWS OF PHYSICS
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    http://www.youtube.com/watch?v=r6w2M50_Xdk

  4. #29

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    RE: Hot rodding a Zenoah GT80??

    not looking for 3D performance, but it's powering a 33 lb warbird that only has ground clearance for a 23" prop.
    plane at best does a loop with no umph at the top



    See post # 12

    Pe, (www.mvvs.nl), MVVS, MOKImotor, RCexl, MTW, Xoar, Mejzlik.
    Blessing in ignorance? There is sanctuary in analysis.

  5. #30
    Whistling Death's Avatar
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    RE: Hot rodding a Zenoah GT80??


    ORIGINAL: AraTidwell

    I had no idea it was for a war-bird.
    Five minutes of reading would have prevented that.
    When H9 came out with my 33% Cap, they were pushing the GT-80. I put a BME 102 in the airplane that was 3lbs lighter and 20% more powerful. The BME has a bare weight of 4.0lbs. Plane balanced fine, infact to get it to fly the way I wanted it still needed a little tail weight.
    Warbirds and 3D planes are two different animals. Warbirds typically require a lot of weight up front.
    Blake

  6. #31

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    RE: Hot rodding a Zenoah GT80??

    What exhaust do you have on your GT80. The factory cans are quite but cost 700-1000 rpm depending on prop.
    Most hot rod tricks will add HP but will require more RPM, reduce power at the lower end and will have a narrower power band.
    TKG
    Too much power is just about right.

  7. #32
    sodbuster 1's Avatar
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    RE: Hot rodding a Zenoah GT80??


    ORIGINAL: tkg

    What exhaust do you have on your GT80. The factory cans are quite but cost 700-1000 rpm depending on prop.
    Most hot rod tricks will add HP but will require more RPM, reduce power at the lower end and will have a narrower power band.
    It's got the factory exhaust on it.Was looking at Toni's 2 into one exhaust but don't know if the gain will be noticeable for my style flying.
    I tend to fly at half throttle most of the time and will go full throttle on a straightaway every once in a while.
    I would like to have a decent top end for some speed but want to make sure it has enough power to muscle it out of any dicey situations I might get into.

    This Terry?
    Once you go Yak, you never go back......
    EX Club Saito member # 610

  8. #33
    speedracerntrixie's Avatar
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    RE: Hot rodding a Zenoah GT80??

    What prop is being used?
    Of course it's true, I read it on the Internet.

  9. #34

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    RE: Hot rodding a Zenoah GT80??

    ORIGINAL: sodbuster 1
    It's got the factory exhaust on it.Was looking at Toni's 2 into one exhaust but don't know if the gain will be noticeable for my style flying.
    I tend to fly at half throttle most of the time and will go full throttle on a straightaway every once in a while.
    I would like to have a decent top end for some speed but want to make sure it has enough power to muscle it out of any dicey situations I might get into.

    This Terry?
    OK cheap trick #1 Get the biggest drill you can fit into the muffler port and drill some holes in the baffle. If you enjoy the extra power then look at aftermarket mufflers.
    I think that J&A Engineering makes mufflers for the GT 80. Way back when the Zenoah first came out Joe had a set of HP mufflers, a little noisy, but they actually showed a power increase over open exhaust (some tuning was happening)
    Yes its Terry, cant stay away
    TKG
    Too much power is just about right.


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