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  1. #1

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    Fox Eagle IV .61

    Ran my Fox Eagle IV .61 today for the first time. On 5% Omega with a MA 11X8 and a Fox Miracle plug it ran 12,750 rpm. I also ran my Tower .75 with the same fuel and prop and got 12,800 rpm. I have always read about the Fox Eagle as being a strong engine for it's class. The weight of these two engines with the stock mufflers is very close with the Tower being about .5 ounce heavier.

    Bill

  2. #2
    rainedave's Avatar
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    RE: Fox Eagle IV .61

    Wow Bill, that's a very strong engine! That's about what most older sixties do with an 11x7.

    Thanks for the numbers.

    David

  3. #3
    Hobbsy's Avatar
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    RE: Fox Eagle IV .61

    Bill, if you go back a few years, MAN ran a .60 engine ShootOut and the Fox .60 won it handily followed closely by the LA .65. I run a Graupner 12x8 on my Fox .60 which it turns at 11,000 rpm on Fox 5% fuel with 20% castor lube. And, if y0ou'll notice, the engine is nearly electric motor smooth. The Fox bested some fine engine in that shoot out.
    Case 570 Diesel, 188.4 Cu. In. HP==36 @ 1,900 RPM, CR 17.5 to 1. Bore==3.8125, Stroke==4.125

    As competition improves products, the differences between them get smaller and smaller

    Club Saito member #5

  4. #4
    MetallicaJunkie's Avatar
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    RE: Fox Eagle IV .61

    would you happen to have a link to the results or the year it cam out in to see if i still have that issue?
    \"Propellers are notorious for inflicting serious bodily harm while vigorously defending their space\" George Aldrich

  5. #5

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    RE: Fox Eagle IV .61

    The May 2003 issue of Model Airplane News had the engine shootout. I have found the article online before but it wasn't complete.

    Bill


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