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  1. #1

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    1/3 scale Hydroplane

    Hello all
    Im trying to find some information on a Hydroplane that is now sitting in my garage, i have searched high and low and have found nothing on this amazing boat . I recived it in trade from the person who built it. its 9 ft yes 9ft long and has a single cyl kawasaki jetski motor in it, i race and buld jetskis so i thought this would be fun. the problem im having is finding a stering servo large enough for this boat. if any one has an idea i would greatly appreciate it. i have added some photos
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  2. #2

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    RE: 1/3 scale Hydroplane

    welcome to the forum
    that thing is sweet, i would love to see it in person. sorry i can't help you out with a sevo. maybe put several 1/4 scale servo's in-line. or maybe a pull-pull system. once you get it up and running, you have to post some video. do you have any pics of the inside? they may help others to give you a better idea
    just say no to \"shelf queens\"
    aaf# 111285-25
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  3. #3

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    RE: 1/3 scale Hydroplane

    here is the motor, i just got it running today, it currently has a 300cc single but comes with a 550cc twin that bolts right in. i was told it was only ran about 3-5 times and the steering never worked correctly, i did find issues with the rudder being extremely tight and moddified it and now it floats well and should turn much easier,
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  4. #4
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    RE: 1/3 scale Hydroplane

    Wow, awesome boat. Post this in the RC gas boat forum if you haven't already.
    RCUniverse.com | Wattflyer.com | RCUvideos.com

  5. #5

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    RE: 1/3 scale Hydroplane

    how about using a sailing boat sail motor?
    i wish i got 6 months paid holiday twice a year

  6. #6
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    RE: 1/3 scale Hydroplane

    Maybe some kind of a robot servo ????
    \" I GOTTS NOMOBUX \"

  7. #7
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    RE: 1/3 scale Hydroplane

    Maybe a geared motor i.e. a windscreen wiper motor with it's gearbox with a controller, else a hydraulic arm. I think youmay have severe shock loading onthe rudderand controller mechanismat speedbecause of the size., especially in choppy water.You will need to find a way to trim it at speed too - maybe a gyro assist?
    My experience is that continental drift sometimes causes the Earth to jump up and knock a plane out of the sky......

  8. #8
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    RE: 1/3 scale Hydroplane

    any videos of this Super Fast action !!!
    Flying in Rain !!!

  9. #9
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    RE: 1/3 scale Hydroplane

    These are suitable for the task, rated at about 110lbs force. They are easy to config because they use a separate pack for power and connect to a standard servo.

    http://www.servocity.com/html/heavy_...vo__115__.html
    Like classic video games and pinball, check out www.retrogamingroundup.com

  10. #10

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    RE: 1/3 scale Hydroplane

    Might do it with a few of these aranged like in large scale planes (parallel):
    http://www.hitecrcd.com/products/ser...sr-5990tg.html
    It all depend on how heavy is the boat and how fast it goes
    The servo in post #9 will do it

  11. #11

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    RE: 1/3 scale Hydroplane

    that thing is sweet, i personally would reccomend a 1/4 scale or larger servo with metal gears, and find a way to increase the leverage on the push pull idea. sort of like an extended servo horn with a steering stabilizer from a truck, to reduce shock
    then again its just my 2 cents...best of luck! please post some vids!

  12. #12

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    RE: 1/3 scale Hydroplane


    ORIGINAL: theturbo6guy

    that thing is sweet, i personally would reccomend a 1/4 scale or larger servo with metal gears, and find a way to increase the leverage on the push pull idea. sort of like an extended servo horn with a steering stabilizer from a truck, to reduce shock
    then again its just my 2 cents...best of luck! please post some vids!
    An extended servo arm would reduce the force and increase the stoke, Hydroplanes require small rudder motion at speed but plenty of torque. Water is harder than air!

  13. #13

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    RE: 1/3 scale Hydroplane

    it was just a thought thats why i threw the damper into the idea, im no expert on boats more of a ground vehicle guy, maybe gear reduction could work, then again just an idea. i've never seen an rc boat nearly that big i want to see it in action!

  14. #14

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    RE: 1/3 scale Hydroplane

    How long is the arm off of your rudder? in other words how many inches from the center pivot of the rudder to where the servo connects to it? i have a hunch its kind of on the small side and might be giving the steering servo (whatever your using) and harder time than it needs,
    in a case like this you realy want to max out the servos throw side to side with the desireable rudder throw side to side, it well create a much more effective setup.
    in other words you dont have to be using half of the servos availible travel to move the rudder fully, full servo travel to full rudder.
    a few of the people above me have good ideas for servos to use, or along the lines of beefy robot servos. servocity.com has great large scale options.
    dont forget a failsafe in that beast eather, CAN be dangerous!
    Very very very cool, thanks for posting it.
    Function over fashion, I dont do shelf queens!

  15. #15

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    RE: 1/3 scale Hydroplane

    This will do it. They are used on UAV's as well as other giant scale planes:

    http://www.troybuiltmodels.com/items/PS-105.html

    http://www.troybuiltmodels.com/items/PS050.html

  16. #16

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    RE: 1/3 scale Hydroplane

    i would find a way to rig an electric motor to do it, the trick is making endpoints for it

  17. #17

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    RE: 1/3 scale Hydroplane



    popsci had and article for converting an automobile windshield wiper into an rc servo;
    http://www.popsci.com/diy/article/20...ject-you-build


  18. #18

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    RE: 1/3 scale Hydroplane

    I would like to find out more about this 1/3 scale jet ski hydro. Like how many were made where and when, if their might be a number the contact him and how much they cost when he first stated making them. The reason I'm curious about is I happen to have one that my friend wants me to sell for him. It is yellow and the hull is still in two pieces plus the hood cowl svcoop, it has not been glassed together yet so foltation and wood plates and be mounted in the hull. This thing is huge I have to say 9 feet long and 58" wide at the sponsons. here are some pics of it.
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  19. #19

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    RE: 1/3 scale Hydroplane

    Here I hope it well give youone more pic
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  20. #20

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    RE: 1/3 scale Hydroplane


  21. #21

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    RE: 1/3 scale Hydroplane


    ORIGINAL: rob.rice

    http://www.invenscience.com/index_files/Page923.htm

    google ''large servos''
    . Did anybody got information about this 1/3 scale hydroplane,

  22. #22

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    Its only worth about 200 bucks shipped to Reno included.... hahahahahaha... damnnnn that is AWESOME!!!!
    Quote Originally Posted by Bhelm View Post
    Hello all
    Im trying to find some information on a Hydroplane that is now sitting in my garage, i have searched high and low and have found nothing on this amazing boat . I recived it in trade from the person who built it. its 9 ft yes 9ft long and has a single cyl kawasaki jetski motor in it, i race and buld jetskis so i thought this would be fun. the problem im having is finding a stering servo large enough for this boat. if any one has an idea i would greatly appreciate it. i have added some photos
    Life is to short,,, to fly slow planes!!!!!!


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