High Thrust Outboards

Discussion in 'Outboards' started by hmattos, Sep 1, 2009.

  1. hmattos
    Joined: Jun 2004
    Posts: 117
    Likes: 3, Points: 0, Legacy Rep: 59
    Location: Devon UK

    hmattos Senior Member

    Hi,
    We - www.explorermarine.co.uk - have been asked to quote for the build of an 8 metre harbour workboat fitted with twin 60hp outboards - twins are required for security and for good steering control in tight spaces. The MAXIMUM speed allowed is 10 knots, but we do require very good pulling and pushing "tugboat" capabilities.

    Do any of you have any experience with the high thrust or Big Foot models in this power, and thus which brand would you suggest.
    We are based in the UK, so only new low emissions engines may be specified.
    Thanks
    HMattos
     
  2. rasorinc
    Joined: Nov 2007
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    Location: OREGON

    rasorinc Senior Member

  3. powerabout
    Joined: Nov 2007
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    Location: Melbourne/Singapore/Italy

    powerabout Senior Member

    The E tec BRP engines wil have the most torque but whoever has the lowest gear ratio and largest prop diameter will win the tug boat duel
     
  4. Easy Rider
    Joined: Oct 2009
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    Location: NW Washington State USA

    Easy Rider Senior Member

    My E-Tech Evinrude has a lower unit with a 2.67 - 1 gear ratio and a prop of almost 14" can be run. That's 40, 50, and 60hp.

    Easy Rider
     
  5. hmattos
    Joined: Jun 2004
    Posts: 117
    Likes: 3, Points: 0, Legacy Rep: 59
    Location: Devon UK

    hmattos Senior Member

    Thanks for your help. We and the customer have now chosen a pair of Suzuki DF90A fourstrokes which at 1502cc and 155kg will I am sure do the job nicely. Suzuki have provided some special high thrust props, and with the new Suzuki double reduction gearing - under the powerhead and in the lower unit - we hope for a good tug at slow speeds.
    Thanks
    again
    Hugh Mattos
    www.explorermarine.co.uk
     

  6. peter radclyffe
    Joined: Mar 2009
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    Location: europe

    peter radclyffe Senior Member

    harbourmaster units
     
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