Replumbing an Outboard for Heat

Discussion in 'Outboards' started by DogCavalry, Nov 24, 2021.

  1. baeckmo
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    baeckmo Hydrodynamics

    Regarding post no 55: no I'm not forgetting the goal, but the decision hangs on a correct analysis of the technical possibilities/risks on one side, and a cost-versus benefit on the other. What disurbes me is when a guy is posting a concrete question about a technical matter and is met with irrelevant speculations.

    Now, for the heating problem at hand, I would not dig into an ob cooling system just to capture some "cheap" heat. Instead I would go for one of the kerosene ovens used in scandinavian fishing vessels in "the old days"; google "Refleks kamin". Its simple, works in all conditions, and it has a heating plate (don't know the English word for it....) where you can heat your lunch or fix the coffee. And, no, I don't like gas in a boat. It is ok in a caravan, but when the heavy gas can collect deep down, no thanx. This is my take from the analysis, weighing pro's and cons. You may very well come to another conclusion, but take care that your info is correct.
     
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  2. BlueBell
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    BlueBell . . . . .

    "Hot plate" is common terminology here in my experience.
     
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  3. Mr Efficiency
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    Mr Efficiency Senior Member

    Relax DC, everyone wishes you success with your endeavours, but you seem intent on spreading yourself thin with "projects" that are not easy essays. It has to be conceded that heating water take-offs from outboards are strangely absent from the product offerings, which suggests to me that it is not easy to do, there does appear to be a market for such a feature, given the aforesaid comments about inboard engines routinely supplying heating to boats in frigid climates.
     
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  4. DogCavalry
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    DogCavalry Soy Soylent Green: I can't believe it's not people

    Well Mr Efficiency, you've got me there. And occasionally I remember that I have a job, a partner, a child, and am buying a house next week.
     
  5. Ad Hoc
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    Ad Hoc Naval Architect

    And that's the issue, as always, with engineering.

    And that's about it.
    Can it be done - yes. But are the challenges (and enjoyment of succeeding) greater than if one were to go the more "simple" route, but with less self-patting on the back.

    That's the decision we all engineers face, the cost/benefit and its own Q&A. But without the R&D and one cannot make an informed choice or decision.
    There is no such thing as bad R&D, only bad advice to not follow such....or bad choices post R&D where evidence suggests to the contrary to whatever one wishes to do, is not such a good idea; in terms of cost/benefit, other than viewed through rose tinted glasses. .
     
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  6. Ad Hoc
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    Ad Hoc Naval Architect

    Bravo.. bravo.. well said.:D

    We'd still be living in caves if we took that 'speculative' approach to everything ..
     
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  7. Ad Hoc
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    Ad Hoc Naval Architect

    That is not the question at hand, which you consistently fail to understand.
     
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  8. Mr Efficiency
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    Mr Efficiency Senior Member

    You consistently fail to understand simple English, my point was simple, if there is a market for methods of co-opting engine heat to warm boats in cold climates, which is attested to in this thread, the absence of such access with outboards as currently engineered, tells me that it is not something that can readily be achieved. Got it ?
     
  9. Ad Hoc
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    Ad Hoc Naval Architect

    So, for the hard of reading English. The question posed is:

    Nowhere, nowhere, does it ask, what/where is the market for such a device/means.

    Got it?!
     
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  10. Mr Efficiency
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    Mr Efficiency Senior Member

    You can't help yourself, you have a long-standing habit of editing posts in such a way that the context is lost. No wonder I can't be bothered conversing with you, and I am far from alone in that.
     
  11. Ad Hoc
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    Ad Hoc Naval Architect

    Hmmm...ok, let's explore that hypothesis.
    The question - in full - that is posed is thus:

    So, does he ask, is there a market for such a system.....no.
    Thus, as always, you're comprehension is incorrect

    As always, you simply fail to grasp the question at hand, and subvert into your own narrative in an attempt to sound knowledgeable, where, as pointed out, all you are doing is.... irrelevant speculations.

    You mistake me for someone attempting to debate with you. I like many others, ... are always correcting you.
    Your extreme lack of understanding of even the basic of engineering, beggars belief, as noted by many posters, one beaut noted HERE... for someone with "knowledge" on boats, you don't even understand hydrostatics!

    Thus, feel free to engage with your like minded cognitive distant friends...

    Now, please leave this thread and let DC explore his idea.



     
    Last edited: Dec 1, 2021
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  12. Mr Efficiency
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    Mr Efficiency Senior Member

    I could point out things where you have given poor advice to people, most I have forgotten, the ones I remember I am not such a nark as to enumerate. I have to say, I have received messages from people over the years complaining about your curmudgeonly ways, but I'd rather convey my impressions on the open forum.
     
  13. Mr Efficiency
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    Mr Efficiency Senior Member

    And that jibe about "cognitive distant" friends marks you as objectionable, and not for the first time
     
  14. Boat Design Net Moderator
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    Boat Design Net Moderator Moderator

    Guys, could we please get back to the topic at hand. Got a covid booster today and have a splitting headache, but the last few posts seem to be going nowhere productive.
    Let's please get this thread back on topic now. Thanks very much.
     
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  15. fallguy
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    fallguy Senior Member

    If the outboard manfacturers can find a competitive advantage; they will. The issue is that outboards are generally not used on boats needing cabin heat. Think more than 80/20, but like 95/5 or worse.

    The issue is they would appeal to literally some percentage of the 5, ultimately appealing to maybe 1/100 purchasers or less who would then not want to pay $1500 for the heating system customization anyhow. So, no, I'd say there is very little market value to the idea. Even the manufacturer considers risk to their warranty offerings! If I run an outboard business; no way do I offer a heating system. I offer what the 80% want.

    And no, there is no engineering data or knowledge to support my statement; just 40 or so years of driving and seeing outboards in use here in the US, almost exclusively on open skiffs. Now and then a houseboat where such a system could be used I suppose, but then not for cooking.

    This thread is like many others here; polemics begin when realities set in.

    At the end of the day, all of us want DC to succeed.
     
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