SPJ steering systems

Discussion in 'Multihulls' started by SPJ yachts, Dec 20, 2007.

  1. SPJ yachts
    Joined: Feb 2007
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    Location: Queensland Australia

    SPJ yachts Junior Member

    Earlier in the year I posted some info re a steering system I developed.
    The test boat (an Wilderness 1320 modified) has since undergone some serious workout Many miles cruising and racing.
    The system has performed perfectly.
    With only 7/8 turns lock to lock (owners brief) ultra direct with 100% positive feedback.
    The standard kit has 1 1/2 LTL but can be varied to suit the individual.
    Autopilot loves this system very little effort to drive it actuates a centre cable module.
    NO link bar NO hydrolics NO copious amounts of blocks and sheeves.
    A simple no fuss easy new install or retro fit system.
    Available in kit form and its in and working.
    More infomation can be had at www.schionningdesigns.con.au and follow the link SPJ Steering systems
     
  2. Alan M.
    Joined: Jan 2006
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    Location: Queensland

    Alan M. Senior Member

    dot CON dot au? Some kind of subliminal message there?
     
  3. SPJ yachts
    Joined: Feb 2007
    Posts: 29
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    Location: Queensland Australia

    SPJ yachts Junior Member

    Gee I hit the key
    Thanks for noticing Alan
     
  4. Kay9
    Joined: Oct 2006
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    Location: Central Coast Oregon US.

    Kay9 1600T Master

    Sorry, the page you are looking for cannot be found.

    I can get there.
     
  5. Frosty

    Frosty Previous Member

    I think its because its .com and not .con

    And you mean you cant get there!!!! Sigh!!
     
  6. Kay9
    Joined: Oct 2006
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    Location: Central Coast Oregon US.

    Kay9 1600T Master

  7. terhohalme
    Joined: Jun 2003
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    Location: Kotka, Finland

    terhohalme BEng Boat Technology

    What means "HD P/P cables" in the picture? My native is not English.
     
  8. Kay9
    Joined: Oct 2006
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    Location: Central Coast Oregon US.

    Kay9 1600T Master

    P/P Cables = Push Pull Cables
     
  9. SPJ yachts
    Joined: Feb 2007
    Posts: 29
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    Location: Queensland Australia

    SPJ yachts Junior Member

    terhohalme,
    HD p/p cables = Heavy duty/ push pull.

    Kay9, Innovation is sometimes measured by success.
    BTW ??
     
  10. Kay9
    Joined: Oct 2006
    Posts: 589
    Likes: 26, Points: 0, Legacy Rep: 279
    Location: Central Coast Oregon US.

    Kay9 1600T Master

    BTW= By The Way.

    Push pull cables have been around for a LONG time. So I guess Im not seeing what is NEW or INNOVATIVE here. In your post you mention you "developed". What exactly did you "Develop" about the push pull cable??????
     

  11. Frosty

    Frosty Previous Member

    Ive just looked at the drawing of the SPJ system.

    There is a lot of pulleys there trasfered to P/Pcables all to steer with 2 wheels to two rudders.

    That system could be fitted with a far simpler hydraulic system with a far better auto pilot.

    There does'nt look to be any accommodation for rudder tracking but I guess you adjust the outer cable??? A hydraulic system merely adopts a hydraulic tie bar that can re align in seconds.

    On larger power cats the rudders experience push or pull from the prop rotation affecting the rudder. This can be considerable and although is not felt at the helm because it cancels out the force remains on the tie bar being hydraulic or cable.

    This is for small craft and is nothing special.

    The only thing new here is conecting a cable to a P/P
     
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