Sea Sled madness. It’s in my brain.

Discussion in 'Fiberglass and Composite Boat Building' started by DogCavalry, Nov 11, 2019.

  1. DogCavalry
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    DogCavalry Senior Member

    The pontoon cat was used to build the house it's docked at. Its deck lines up quite well with the bed of a pickup truck at the boat launch ramp.
     
    Last edited: Nov 3, 2022
  2. DogCavalry
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    DogCavalry Senior Member

    IMG_20221105_181309644.jpg IMG_1267.jpg IMG_20221105_160932411.jpg IMG_20221105_114630438.jpg
    An interesting day. Rainbow at the job site. And five minutes after leaving a friend waved us down. Needed a tow. Took so long to get him to the marina that it was almost dark, and we don't have lights, so Anne kayaked out and gave us her kayak lights. So we towed her back.
     
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  3. DogCavalry
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    DogCavalry Senior Member

    The tow had his engine hard over. I was pulling him through the water sideways until I noticed. First timer mistakes.
     
  4. DogCavalry
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    DogCavalry Senior Member

    Anne wants me to build a boat/hot tub for winter trips up the arm. Anyone done that?
     
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  5. bajansailor
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    bajansailor Marine Surveyor

    Is this a boat with a hot tub, or a floating hot tub that does double duty as a boat - or something else......?
    Where is 'the arm'?
     
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  6. Ad Hoc
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    Ad Hoc Naval Architect

    Safety first John - always!
    You should always have a set of lights and life-jackets, flares, radios, portable fire extinguisher etc...always!
     
  7. DogCavalry
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    DogCavalry Senior Member

    Absolutely.
    Serenity wasn't meant to be launched yet, but events forced my hand. Everything else is onboard, but the electrical system isn't installed yet.
     
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  8. DogCavalry
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    DogCavalry Senior Member

    The arm is Indian Arm, where we live now.

    Screenshot_20221107-202002.png I think Anne was visualizing a floating hot tub that can be propelled. Although a barge with a hot tub in the middle seems more realistic.
     
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  9. bajansailor
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    bajansailor Marine Surveyor

    Excellent!
    There could be a good commercial opportunity here - it seems to work for these folk in London.
    And you have much nicer views.
    https://www.skunaboats.com/hot-tub-boat\
     
  10. DogCavalry
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    DogCavalry Senior Member

    IMG_20221108_105111847_HDR.jpg IMG_20221108_095917083_HDR.jpg
    A windy day on the Arm.
     
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  11. bajansailor
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    bajansailor Marine Surveyor

    Oh man, that is impressively majestic and scenic!
    How did Serenity cope with the conditions when going upwind?
    And what speed?
     
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  12. DogCavalry
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    DogCavalry Senior Member

    She liked it just fine. It wasn't nearly the problem I feared it might be. Probably maintained a steady 5.5 knots instead of my usual 6.5. Although the trip was for naught- the dock at the end of the journey was moving so much I couldn't tie up. Had to turn around and go home again. The wind was exactly down the length of Indian Arm so it came to quite a fetch.
     
  13. DogCavalry
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    DogCavalry Senior Member

    IMG_20221113_121259223.jpg IMG_20221113_121235173_HDR.jpg I was thinking engine oil, but it's a 2-stroke. Hydraulic oil from the tilt motor?

    The 250 is acting up. If I tilt it up at night, really doesn't want to start in the morning. If I leave it down, starts instantly. Runs really warm too. 180-190 F. At 1350 rpm.
     
  14. baeckmo
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    baeckmo Hydrodynamics

    The tilt pump should be fould outside the transom, between the side brackets. What you see is probably lubrication oil that comes from the throttle housing when you tilt the engine.

    This oil may have accumulated in the air filter as a result from "sneezing" action when the engine is operated at low speed for long time. The inlet suction pulses have time to travel several trips between crankcase and throttle housing throat. They are not "filling up" the crankcase correctly under this condition, and some of the injected oil is can be spit out. Normally, when increasing the loading, the surplus is inhaled and the filter cleaned automatically. The way you have to operate the engine, your air filter will be "rich" with oil after a night's rest in tilted condition, resulting in fouled plugs and starting issues.

    I guess it's about time to adress the cooling water flow problem soon.

    Edit: .....and the temperature corresponds to 82 > 88 degrees Celcius, which should be about correct; consult the engine manual.
     
    Last edited: Nov 15, 2022
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  15. DogCavalry
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    DogCavalry Senior Member

    Thanks @baeckmo ! Your understanding eclipseses mine. I downloaded an engine service manual. 416 pages... I'm only on page 60. There's almost a total absence of Evinrude mechanics now that I'm considering picking up the skills to a degree I would previously have scoffed at; I'm already over booked.
    I had been alarmed by the temp because the manual says 190, or 88 is normal maximum, and it's there frequently.
     
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