Hull hook.. good or bad ?

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  • ice_spy
    Senior Member
    • Nov 2008
    • 122

    #1

    Hull hook.. good or bad ?

    Why do some hulls have some 'hook' built into botom of the hull? I know it keeps the nose down, is this so no need for trim tabs or to reduce porposing? handle choppy conditions?
    Would this create a lot of drag and cause the boat to run 'too wet' ? or actualy run stable at high speeds and stick ?
  • martin
    Fast Electric Addict!
    • Aug 2010
    • 2887

    #2
    I cant speak for any hulls with hook built into the design but ive had a few monos that had hook through distortion in the hull or to thin layup. I always cure the problem & it makes a big difference to how the boat performes, a good example of hook is on the 41" Osprey hull that have been discussed a few times on here. A cheaper version of the Osprey called Vanquish had a terrible hook in the hulls & handled very badly being much slower & stuck to the water & no matter what adjustments were made you coulnt get the bow up & it ran very wet. The Ospry didnt have anyware as much hook & ran totally different.

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    • siberianhusky
      Fast Electric Addict!
      • Dec 2009
      • 2187

      #3
      Depends on many things. I know for a fact that Martin Truex added a slight hook to the bottom of his .12 nitro powered wildthing. He was going for all out straight line speed. Before he did this the hull was blowing over and chine walking really badly, after this the hull stayed on the water and gained a substantial amount of speed.
      I can't remember who told him to try that mod but it worked. I am still in awe at how fast he got a 24" nitro boat to go with a modded OS TZ .12!
      Some hulls it's a fault for sure, others it's part of the design and you can just hope the designer actually knew what he was doing.
      As I said before it`s either a Seaducer or Rico 20 which has a slight hook, your are even told to leave it, both are fast boats with a great reputation for race boats when set up right. Neither are cheap either!LOL
      If my boats upside down then who owns the one I thought I was driving the last two laps?

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      • ice_spy
        Senior Member
        • Nov 2008
        • 122

        #4
        Great comments thanks.
        Was thinking of sanding and filling it out. However, i was hoping the designer knew what he was doing.
        I have a Thailand built 35" gas mono hull with a fair amount of hook. They do run these hulls with large cc motors and also run consistantly in moderate choppy conditions. So i will guess i will just have to push this hull to higher speeds to see if the hook works.

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        • Jesse J
          scale FE racer
          • Aug 2008
          • 7116

          #5
          my philosophy is: run it first! I have three cases for you to help with determining if it is good or not.
          1) my Aeromarine XXX had a pretty distorted hull - not supposed to have a hook and performed terribly. I spent a day sanding and bondoing and now it rides righteously
          2) My AM Titan 40 has a pretty significant hook - not supposed to, but rides beautifully!
          3) friends Herzog, had a pretty noticeable hook, not sure if its supposed to or not, rode beautifully - for some reason the hull was blueprinted and now it rides poorly...

          moral is: it depends so take her for a spin or two to see how she handles.
          "Look good doin' it"
          See the fleet

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