Kiwanda

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About Kiwanda

  • Rank
    Member

Profile Information

  • Location
    Portland, Anacortes
  • Interests
    Boat systems, galvanic inquiries,
  1. Kiwanda

    My newest project

    It appears he is pretending the victim hence his attempted modesty. Come to think about it - maybe it is not an attempt at modesty - more likely he has much to be modest about
  2. Kiwanda

    My newest project

    Thank you.
  3. Kiwanda

    My newest project

    Is a date and (travel lift) location set? If so where can one obtain permission to attend? Kiwanda
  4. Kiwanda

    My newest project

    Other people have not had the same experience. Photo by Ed Sherman
  5. Kiwanda

    My newest project

    Mr. Hart Your anode depletion rate seems pretty normal. Doubtful there is any wiring or stray currrent based gremins afoot based on what you report. 50% wasted salt water is the right time to change out and if the anode lasted longer than one year the anode is probably passivated or loose (not working) and needs to be replaced. If your drive is Volvo then the drive is already isolated from the motor and so also the rest of the boat. Check it with a multimeter. If it does not check out diagnose and replace the Volvo insulated parts that were put there to maintain isolation. Generally: Keep the drive paint coatings intact - any scratches need to be recoated. The sail drive anode is sized to protect the drive itself - not the propeller (nor any other underwater metal either) so aftermarket propeller means additional anodes need to be in place. No wiring attached to the drive either - including a control cable that might come into contact other things electrical.
  6. Kiwanda

    My newest project

    An isolation transformer will keep you isolated from the neighbors galvanic and stray current mischief because safety green does not pass off the boat and so you are not connected to everyone else. Safety green still needs to be bonded onboard but that path ends at the transformer. This device also does away with polarity miswire threats and eliminates AC passing through the water to the shorepower transformer ground. Very good device indeed but one needs to make sure the install is exactly as designed and one needs to test regularly to be sure there are no internal faults that will defeat isloation. An isolation transformer will not protect you from stray current or galvanic events if the source is on your own boat.
  7. Kiwanda

    My newest project

    If DC stray current is the cause of anode or underwater metal wasting then there is a problem with DC wiring or a DC device - not the DC/AC safety green bonding connection. If you need 24 hour circuits (bilge pumps, refrigeration, etc.) then complete battery isolation (both DC positive and negative switch) will not work. LIkewise this connection plays no part in anode depletion if the source of stray current is a neighbor's DC electrical problem . Typical sources of stray current are the battery charger, charger/inverter, any device or wiring connection exposed to bilge water. In the case of inverters and generators too - AC safety green (grounding) to DC negative are bonded together for safety the same as AC shore power safety green needs to be bonded to DC negative. AC grounding does not carry any current unless something goes wrong between AC and DC system wiring. If the two are not connected together then there is no secondary path back to the AC source. Plainly - defeating that connection puts the boat and persons at risk and where these are correctly bonded together there is no risk of creating any DC stray current threat. The AC/DC connection is an important safety connection that protects from fire and electrical shock. And that is why virtually every code worldwide including USCG and ABYC standards require this connection be kept intact. The connection by itself has no effect whatsoever in stray current damage cases.
  8. Kiwanda

    My newest project

    Yes -- Dave and anyone else too. Please note well anodes protecting the sail drive unit must be carefully attended --- and that goes double if you use any propeller (Gori included;) containing copper. Else problems will ensue. Follow your version of sail drive instructions (probably Volvo in your case) to the letter especially concerning aftermarket propeller installs. If you do not attend to this detail galvanic trouble will attack the drive unit big time and you will much regret your inattention. Kiwanda
  9. Kiwanda

    My newest project

    Gotta respect the vacuum cleaner reverse oxygen forge supplier. Brilliant
  10. Kiwanda

    My newest project

    I had proclivities once too. Fortunately they got scared out of me - I think at the same time as the beejeebers. Happy New Year Bob Perry and to the rest of you as well. Hope Boomer and you can conspire to chronicle Dave's build.
  11. Kiwanda

    My newest project

    Perfect boat for me. Want to talk? Kiwanda
  12. Kiwanda

    My newest project

    Tall race cars
  13. Kiwanda

    My newest project

    Message received no prying into secrets was intended. One would not expect polyester - except polyester can be pretty whiz bang in the right recipe and it is a dream to sand and shape. Carry on Kiwanda Edit I know right where the yard is - so is it really possible to obtain an appointment? Personal note -- would love to discuss take apart (nesting) dingy in CF.
  14. Kiwanda

    My newest project

    One cannot help but admire good BOG (Carumba and I discussed BOG generally at your June get-together). Do you know what the recipe is in the case of the bulwark here? Kiwanda
  15. Kiwanda

    My newest project

    Can bring generator if it keeps the information coming. Kiwanda