Lowspeed tracking problem

Discussion in 'Powerboats' started by Mattias75, Dec 27, 2011.

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  1. Mattias75
    Joined: Dec 2011
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    Mattias75 Junior Member

    and the boats weight is about 9 tons
     
    Mattias75, Dec 28, 2011
    #16
  2. TeddyDiver
    Joined: Dec 2007
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    Location: Finland/Norway

    TeddyDiver Gollywobbler

    That's the reason for your problem, thou you didn't say the tank capacity. Just for to test it take it one time for a ride with (allmost) empty tanks to see how much it changes..
     
    TeddyDiver, Dec 28, 2011
    #17
  3. Mattias75
    Joined: Dec 2011
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    Mattias75 Junior Member

    i did ands its not a big diffrence
    and the same with emty and full watertank
    w tank about 200l
    fuel 750l
     
    Mattias75, Dec 28, 2011
    #18
  4. tunnels

    tunnels Previous Member

    JUST A thought but have you tried running one motor slightly faster than the other by just a few hundred rpms but one fighting against the other works with Cats to hold steady . Also toe out rather than toe in has more of a tendancy to raise the bow !!!

    I must say its the dumbest idea for the bottom of a boat i ever seem ,Sorry dont grasp what the hell the idea is ?? its not a tunnel drive because the props are to far away from the shape in the hull . its an abortion to say the least . It must have a terrible tendancy to suck the hull down when it is taking off and even at speed . it must still do the same :p
     
    tunnels, Dec 28, 2011
    #19
  5. Mattias75
    Joined: Dec 2011
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    Mattias75 Junior Member

    Im not know if you think about its duoprop and volvo tels in should be toe in for not geting cavitation

    maby the best way puting a extention 4" and cloase the tunnel
     
    Mattias75, Dec 28, 2011
    #20

  7. Mattias75
    Joined: Dec 2011
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    Mattias75 Junior Member

    Anybody think its a good idea to takeaway the tunnel and extension the drive?

    The boat take alot of fuel about 4 l nm
    My friend has a sealine 34 this boat is about 2 tons lighter but takets 2'5 l
    With kad 43 and that is same engine
    Maby the sealine dont have 22 d deadris as my Princess have

    Sugestion?
     
    Mattias75, Dec 28, 2011
    #21
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