Regarding Aluminum stern tube

Discussion in 'Boat Design' started by Hunterr, Jan 18, 2017.

  1. Hunterr
    Joined: Jun 2015
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    Location: Korea

    Hunterr Junior Member

    We are korean Aluminum Shipyard 'Daoyachts'

    Is it possible to make aluminum sterntube?

    actually, we are used to using SUS sterntube -Choke paste-Al tube.

    THE MODEL : http://blog.naver.com/tvgram/220901977400
     
    Last edited: Jan 22, 2017
  2. gonzo
    Joined: Aug 2002
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    gonzo Senior Member

    Sure, many aluminum hulls use aluminum sterntubes. Are you referring to where the rudder post comes into the hull?
     
  3. Ad Hoc
    Joined: Oct 2008
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    Ad Hoc Naval Architect

    Just make sure you use 5083-0 grade and not 6082/6061 grades
     
  4. baeckmo
    Joined: Jun 2009
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    baeckmo Hydrodynamics

    ......and that the position where the cutless bearing is placed, has direct support from the hull structure (i.e. not in a cantilever, or overhung position). This with regard to the relatively low fatigue strength in aluminium.
     
  5. Hunterr
    Joined: Jun 2015
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    Hunterr Junior Member


  6. Tigawave
    Joined: Sep 2007
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    Tigawave Junior Member

    Aluminium bearing carriers

    Yep, many Aluminium boats have Al bearing carriers whether stern tube or P bracket / strut. Some bearing suppliers size the bearings for a glue/epoxy fit of the bearings which has benefits for an Al carrier. From Australia Maritex do many bearings for Al vessels.
     
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