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Propeller Shaft Anodes

Posted: Wed Feb 08, 2017 12:38 pm
by carl
Question:
Do any of you Marinette owners use anodes on your propeller shafts? And if you do what type?

Re: Propeller Shaft Anodes

Posted: Wed Feb 08, 2017 1:30 pm
by barkleydave
Nothing wrong with putting anode shaft collars on them. The problem is finding the correct type. Marinas normally only have zinc which does nothing. Your Rudder,Keel and tab anodes if properly maintained will be sufficient.

Aluminum is the proper one to use. Mag. is too hot and they will not last long and are too hot for salt or brackish water.

http://www.boatzincs.com/shaft-aluminum.html


safe boating,

dave

Re: Propeller Shaft Anodes

Posted: Wed Feb 08, 2017 6:52 pm
by Maestro
I have used the exact anode from Barkley Dave's link for the last 3 years. My engine is isolated from the shaft with a Globe Drivesaver, but the anode is on there for peace of mind.

Re: Propeller Shaft Anodes

Posted: Wed Feb 08, 2017 8:04 pm
by bcassedy
I use the shaft anodes from BoatZincs as well. Always a good idea in my mind.

Bill

Re: Propeller Shaft Anodes

Posted: Thu Feb 09, 2017 4:12 am
by carl
Marstro,
Thank you for mentioning the Globe Drivesaver, I had to Google search it and these couplings are a good match for our Marinette boats considering the need to isolate our shafts. Thank you for sharing. Awesome product. Find it here: https://www.gcsmarine.com/content/drive ... rivesavers

Re: Propeller Shaft Anodes

Posted: Thu Feb 09, 2017 7:14 am
by Fastjeff
I used Boat Zinc on mine and they needed replacement every two years (in brackish water). That means they were working, right?

Jeff

Re: Propeller Shaft Anodes

Posted: Thu Feb 09, 2017 2:40 pm
by Busia
Fastjeff wrote:I used Boat Zinc on mine and they needed replacement every two years (in brackish water). That means they were working, right?

Jeff

That is why they are called "sacrificial" anodes. Better to have them get eaten up or dissolved than the boat.
I put new shaft anodes on every year. It is hard to find the aluminum ones. Different brand names for the aluminum anodes but they are all the same alloy. Best place to go is boatZincs.com You could call them up and tell them you have Marinette, what size it is and they will know exactly what you need, and have the best price.
If you are shopping for Globe Drivesavers, be sure to shop around. Prices vary wildly by who sells them. All made by the same company. Found some companies marking the price up 3 or 4 times the cheaper places. Easy to save $600 to $800 if you shop around.--Ed