Al
Guru
- Joined
- Apr 1, 2012
- Messages
- 2,206
- Location
- usa
- Vessel Name
- 'SLO'~BELLE
- Vessel Make
- 1978 Marben-27' Flybridge Trawler(extended to 30 feet) Pilothouse Pocket Cruiser[
Recently during the annual 'Shave and Haircut" haul for bottom paint and zincs the condition of the zincs were determined to be good enough, with the exception of the shaft collar zinc, to go another year. Great news!! Considering that the prior annual found the zincs on the last legs of being physically in their location. The hub cap zinc was almost the monel bolt!
So what has happened to reflect this vast difference?
There has been no phyical change in the harbor, or boat slip changes during the year. No electrical systems in the harbor have be touched. In effect all the normal suspects are not present.
Okay- Now. Having in the past year, learned more about changing out the zinc anode located in the engine cooling system I had set a schedule of every 6 months change it out. At the first six months there was nothing left on the anode, so I changed the schedule to 5 months. At the end of the 5th month yesterday, I changed the anode. There remained less than a 1/4 inch of zinc.
So- If my zincs on the boat proper are remaining in good (Use is apparent, but not that much) condition, is the action on the engine cooling anode zinc taking the beating keeping the main hull zincs active but not being aggressively ate up?
Happy to change out the engine anode zinc. cheap and easy to accomplish. saving money by having two seasons on the hull zincs is a big plus.
Incidentally, there is no action on the wheel to show any lack of zinc protection. still a bright finish with no indication of electroless to the blades.
Comments?
Thanks, Al-Ketchikan
So what has happened to reflect this vast difference?
There has been no phyical change in the harbor, or boat slip changes during the year. No electrical systems in the harbor have be touched. In effect all the normal suspects are not present.
Okay- Now. Having in the past year, learned more about changing out the zinc anode located in the engine cooling system I had set a schedule of every 6 months change it out. At the first six months there was nothing left on the anode, so I changed the schedule to 5 months. At the end of the 5th month yesterday, I changed the anode. There remained less than a 1/4 inch of zinc.
So- If my zincs on the boat proper are remaining in good (Use is apparent, but not that much) condition, is the action on the engine cooling anode zinc taking the beating keeping the main hull zincs active but not being aggressively ate up?
Happy to change out the engine anode zinc. cheap and easy to accomplish. saving money by having two seasons on the hull zincs is a big plus.
Incidentally, there is no action on the wheel to show any lack of zinc protection. still a bright finish with no indication of electroless to the blades.
Comments?
Thanks, Al-Ketchikan