I´m curious about how other CD owners are coping with cathodic protection while underway.
After one year in saltwater, I´m finding problems on my transmission coupling to the shaft and there is no room to install any zincs on the shaft.
I am using the disposable zinc, hung overboard while at dock. Does anyone have any experience with these zinc configurations?
Fortunately I have turned north from Georgetown in the Bahamas and should arrive back in Lake Ontario this summer, ending the assualt on my boat.
Thanks in advance,
sea u,
mike
mritenouru@aol.com
Cathodic protection
Moderator: Jim Walsh
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Ken Coit
Re: Cathodic protection
Mike,
I think the proper solution is something referred to as a Perry Nut in the CD manuals. It replaces the nut that holds your prop on the shaft and includes a zinc which is streamlined for better water flow. Putting a zinc on the shaft, which some of us have room for (36) is not such a good idea as it restricts the flow of cooling water to the strut bearing, possibly causing it to fail sooner. West Marine sells these Perry Nuts, but calls them prop nut anodes. In earlier posts to this board, the following was provided:
Perry's (916) 777-6461, and an East Coast supplier, C. E. Beckman in New Bedford, MA (508) 994-9674
In addition, the 2000 West Marine catalog lists Zinc Prop Nut Anodes on page 410. If you have 1 inch shaft (likely) with 3/4 inch thread you need model 132581, a complete assembly, priced at $39.59. Replacement zincs are model 132656, priced at $12.99.
Have a great trip back. Let us know if you are coming by Beaufort, NC, we might drop down to see you.
Ken Coit
Parfait CD-36 #84
Raleigh, NC
parfait@nc.rr.com
I think the proper solution is something referred to as a Perry Nut in the CD manuals. It replaces the nut that holds your prop on the shaft and includes a zinc which is streamlined for better water flow. Putting a zinc on the shaft, which some of us have room for (36) is not such a good idea as it restricts the flow of cooling water to the strut bearing, possibly causing it to fail sooner. West Marine sells these Perry Nuts, but calls them prop nut anodes. In earlier posts to this board, the following was provided:
Perry's (916) 777-6461, and an East Coast supplier, C. E. Beckman in New Bedford, MA (508) 994-9674
In addition, the 2000 West Marine catalog lists Zinc Prop Nut Anodes on page 410. If you have 1 inch shaft (likely) with 3/4 inch thread you need model 132581, a complete assembly, priced at $39.59. Replacement zincs are model 132656, priced at $12.99.
Have a great trip back. Let us know if you are coming by Beaufort, NC, we might drop down to see you.
Ken Coit
Parfait CD-36 #84
Raleigh, NC
mike ritenour wrote: I´m curious about how other CD owners are coping with cathodic protection while underway.
After one year in saltwater, I´m finding problems on my transmission coupling to the shaft and there is no room to install any zincs on the shaft.
I am using the disposable zinc, hung overboard while at dock. Does anyone have any experience with these zinc configurations?
Fortunately I have turned north from Georgetown in the Bahamas and should arrive back in Lake Ontario this summer, ending the assualt on my boat.
Thanks in advance,
sea u,
mike
parfait@nc.rr.com
-
mike ritenour
Re: Cathodic protection
Ken,
Thanks for your reply.
Weather permitting we will be going outside from Charleston (where the boat is now) to NYC.
If it's snotty, then it´s the ditch.
Would love to meet you and scuttlebutt the CD´s.
My email on the road is pocketmail, the address is: umci@pocketmail.com
sea u,
mike
mritenouru@aol.com
Thanks for your reply.
Weather permitting we will be going outside from Charleston (where the boat is now) to NYC.
If it's snotty, then it´s the ditch.
Would love to meet you and scuttlebutt the CD´s.
My email on the road is pocketmail, the address is: umci@pocketmail.com
sea u,
mike
mritenouru@aol.com