Motor size for sea ark 2072?

Discussion in 'Boats, Blinds, & Gadgets Forum' started by Brad McDaniel, Nov 30, 2017.

  1. Brad McDaniel

    Brad McDaniel New Member

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    Don't want to set a speed record but I want to move along at least 28 to 32 mph while fully loaded. What size motor would push my sea ark 2072 tiller style at said speeds? Considering either a 70hp or 90hp yamaha. Note the f70 is 250lbs and the f90 is 350lbs. My regular load would be myself the dog decoys 1 other guy and a 240lb permanent blind I'm going to build for it.
     
  2. bullpinnie

    bullpinnie Elite Refuge Member

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    a friend of mine has one with a 115, and i'd consider it under powered.
     
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  3. smashdn

    smashdn Elite Refuge Member

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  4. River Duck

    River Duck Refuge Member

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    A 70 horse may not put that boat on plane. It's a heavy hull not to mention the extra weight of the blind. I would think at least 100 horsepower is needed. You'll kick yourself in the rear if you do it and end up underpowered.
     
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  5. joecitrano

    joecitrano Senior Refuge Member

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    I have a 2072 sea ark with a two stroke 50 n it . Just me n dog it'll push 25 but add a. Lille big boys n a ton of gear it'll do like 20. I've never felt under powered just maybe a shade on the slow side, there is a difference. When it comes time to repower I'll probably go with a 70 Yamaha. The power to weight gain with the twenty extra hp isn't worth it to me. A big hp motor will get you movin fast but also add a ton Of weight . Plus I can't imagine a 100+ hp tiller motor that sounds nuts
     
  6. joecitrano

    joecitrano Senior Refuge Member

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    And my little 50 has no problem getting on plane n a it's a 2072 mv with the factory diamond plate floor n 3 batteries n gas tank between bench n transom. N yes it's a heavy pig
     
  7. dc73nova

    dc73nova Refuge Member

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    I have a 2072 war eagle center console with a F90 Yamaha. It will run right at 40 mph with normal load 2-3 men. Definitely not underpowered. We've had 4 men, 2 layout boats 12 dozen deeks and gear in the boat and it would still run faster than I wanted to go. I run a 19 pitch prop and it's unbelievable how efficient it is on fuel.
     
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  8. Olefart

    Olefart Senior Refuge Member

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    We had a 225 Johnson Venom on our 1872 SeaArk, pushed it into 60s pretty easily. It had a side mount helm and hydraulic steering with a CNC hydraulic jack plate. We beefed up transom and welded in a 1/4" thick full length deck plate floor. Could put 8 people in it and still run 50+. We ran a 4bld 15.5x 26 pitch Mercury Bravo 1 prop. Only issue was it burned 27 gals an hr at 5800 rpm WOT. Don't under power it SeaArks are a well made heavy boat.
     
  9. smashdn

    smashdn Elite Refuge Member

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    Sorry, just saw in the op you wanted a tiller.

    I'd still want a decent size motor to get on plane quick. Otherwise you going to be nose up looking at boat a bunch and not able to see what is in front of you.
     
  10. grande long

    grande long Refuge Member

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    what hp is the boat rated for.get close to that with the biggest tiller you can.
     

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