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  1. raffshore

    Diesel Power

    I am sorry to say but no, you are not right. I build the hull's myself and we have 23ft boats with twin outboards on a hydraulic lift on the back, this is 500kg on the back (outside the boat). When I builded the boat, I builded for inboard diesel, with all the structural strenght and flotation...
  2. raffshore

    torque question

    I want to increase speed to lower the torque. Years ago we had yanmar 350HP on bravo drives and I never saw one holding together longer then 30 hours. The bravo's can handle power and RPM, not torque
  3. raffshore

    torque question

    You guys are right, any leads on gearboxes? thanks, Raf
  4. raffshore

    torque question

    I want to use a cummins 12V 5,9 diesel engine to replace a blown chevy 540 BB. the diesel engine puts out 500 HP at 3000rpm with 945lbs at 2000 rmp. If I would use a speed increaser gearbox of 1 to 2, I convert this to 1000HP at 6000 and 472ft lbs at 4000 wich actually lies close to my BB...
  5. raffshore

    Diesel Power

    I am a high perfomance boat builder in Europe. With our feul prices we have tons of clients who are asking us for dieselpower. We want to use a bravo style drive, because almost every boat is equiped with this style of drive. The known problem is that these drive cannot handle the massive torque...
  6. raffshore

    Arneson Surface Drives

    www.dbdmarine.com have a nice drive, same principle

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