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Thread: rotax 582 with a 2.6x 1 reduction

  1. #1
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    rotax 582 with a 2.6x 1 reduction

    any body seen this set up on a air boat?

  2. #2
    Administrator Papee's Avatar
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    Re: rotax 582 with a 2.6x 1 reduction

    There is a father and son running the Rotax motors here in my area. One is running that same motor. Not sure what the other is.
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    Member aerokirk's Avatar
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    Re: rotax 582 with a 2.6x 1 reduction

    Hi Oran ... welcome to the site! Just curious .... what happened to the Challenger? Wish I could offer some help but I'm running a continental 4a084 on mine. There's quite a bit of experience here on this site though.
    11'6" Marty Bray Hull
    4A084 Continental
    Circle "S" 1.69:1 Reducer
    67" Whirlwind Razor X Prop
    SS Rigging

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    Re: rotax 582 with a 2.6x 1 reduction

    I hit a power line one day coming in for a landing i tore the plane up pretty good my wife want let me build another one so two years after the crash I dicided. To put put the engine on a airboat

  5. #5
    Junior Member Doozit20's Avatar
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    Re: rotax 582 with a 2.6x 1 reduction

    Glad to see you weren't majorly hurt with the crash. Welcome to the site and I think that will be a great engine for a mini. Ought to really scoot along. How much hp does that engine have? And what size prop are you spinning?
    Hull:10'6"x69" 1/2 deckover .100
    Motor:4a084 w/ stock carb
    Reduction:direct drive
    Prop:ultraprop 3 blade 59x10*
    Mods:Motorcycle exhaust

  6. #6
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    Re: rotax 582 with a 2.6x 1 reduction

    I have not decided yet I am trying to find out what size prop I will be able to spin with the rotax 582 with a 2.6 1 I think about a three blade warp drive 64"but not sure I hope I get some replies!

  7. #7
    Junior Member Doozit20's Avatar
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    Take a look at the whirlwind 3 blade. Your prop speed should be right in there with its performance curve and ive read some good reviews on them. And I think they will flex less so itll add more thrust. Atleast thats my take on it.
    Steve
    Hull:10'6"x69" 1/2 deckover .100
    Motor:4a084 w/ stock carb
    Reduction:direct drive
    Prop:ultraprop 3 blade 59x10*
    Mods:Motorcycle exhaust

  8. #8
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    Re: rotax 582 with a 2.6x 1 reduction

    ok I will check it out thanks !!!

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    Re: rotax 582 with a 2.6x 1 reduction

    hp on the rotax 582 is 65 and it has 30 hrs on rebuild by rotax rick in Naples Fl.

  10. #10
    Junior Member Doozit20's Avatar
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    There are many props available thatll work with that kind of horsepower. I would call whirlwind and ask if thwy would suggest there mini prop. If youd like I can talk to a buddy at water walker props and see if he has a prop thatll work with that engine setup. They make very wide props for big boy motors but ya never know. Though they are a little pricey I think.
    Hull:10'6"x69" 1/2 deckover .100
    Motor:4a084 w/ stock carb
    Reduction:direct drive
    Prop:ultraprop 3 blade 59x10*
    Mods:Motorcycle exhaust

  11. #11
    Member aerokirk's Avatar
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    Re: rotax 582 with a 2.6x 1 reduction

    I agree ... call Whirlwind and talk to Patti, she's really knowledgeable on prop applications.

    She spec'd out mine and it was perfect for the application.
    11'6" Marty Bray Hull
    4A084 Continental
    Circle "S" 1.69:1 Reducer
    67" Whirlwind Razor X Prop
    SS Rigging

  12. #12

    Re: rotax 582 with a 2.6x 1 reduction

    This guy has a 618 rotax on a 10ft aluminum hull.
    http://www.southernairboat.com/class...?product=81251

  13. #13

    Re: rotax 582 with a 2.6x 1 reduction


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    Re: rotax 582 with a 2.6x 1 reduction

    I final got my 116.5 hull from marty brays I ordered some frog spit t put o bottom has any body tried spraying it with a HVLP gun does it have to be a special tip I have sprayed some pretty thick paint with it no problems

  15. #15
    Junior Member Doozit20's Avatar
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    Re: rotax 582 with a 2.6x 1 reduction

    Ive only used the steel flex and a roller. Its pretty thick stuff. Id say call the manufacturer and get there take on it? Glad to see your back at it.
    Hull:10'6"x69" 1/2 deckover .100
    Motor:4a084 w/ stock carb
    Reduction:direct drive
    Prop:ultraprop 3 blade 59x10*
    Mods:Motorcycle exhaust

  16. #16
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    Re: rotax 582 with a 2.6x 1 reduction

    ok I will us I have been waiting for the hull to be built I had the cage built from air tech ultra lights I have just about everything to start putting it together I am at work for two weeks .

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    Re: rotax 582 with a 2.6x 1 reduction

    My 583 with the same gear ratio turns a 2 blade 70" Whirlwind Razor X-Core. Rotax Rick also went through mine. Pitch is now set to hold WOT on trailer just below 8k rpm. Had Rick put a clutch in my C box. Great addition!!! My hull is Alumitech 12' x 7' ultra light.

  18. #18
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    Re: rotax 582 with a 2.6x 1 reduction

    I am in the middle of up grading to a c box with 3.47 to 1 with a 4 blade 72 inch with a clutch warp drive prop I had a 66 inch 3 blade razor x whirl wind prop it wasn't producing enough thrust .

  19. #19
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    Re: rotax 582 with a 2.6x 1 reduction

    You might want to look for a c box with 2.6 to 1 gears. Power band on 582 (583) is 6-6.5k rpm. You need prop speed up around 2.5 k to get to most out of whirlwind razors. I ditched my warp drives after running razors. JMO

  20. #20
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    Re: rotax 582 with a 2.6x 1 reduction

    I. Am getting advice from airtech ultralight they they build air boats with this engine everything is bought and on the airboat I have it at their shop fixing a idle problem. So I hope they know what they air talking but I agree that that the whirl wind props are better than the warp drive props I was just trying to go with the set up that they were using
    I am going to work for two week's I will keep you posted when I come back from work.

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