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Old 05-18-2017, 06:09 AM   #1
Lou_tribal's Avatar
City: Quebec
Country: Canada
Vessel Name: Bleuvet
Vessel Model: Custom Built
Join Date: Jan 2016
Posts: 3,852
Shaft anode replacement

Hi fellow TFers!
Yesterday I replaced all my anodes (or better said dissolved missing anodes).
My shaft anode shows some sign of corrosion but I guess it can still offer some protection. Instead of replacing it, I added another shaft anode on the shaft.
Do you see any issue doing this (so having 2 shaft anodes around 4 inches between each other)?


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Old 05-18-2017, 06:13 AM   #2
City: Seaford Va on Poquoson River, VA
Country: United States
Vessel Name: Old Glory
Vessel Model: 1970 Egg Harbor 37 extended salon model
Join Date: Jan 2016
Posts: 2,189
That is fine, extra zincs so all the zincs have a longer life.

I suppose creates a little more friction with the spinning shaft and the water.

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Old 05-18-2017, 03:21 PM   #3
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City: Gold Coast
Country: Australia
Join Date: Mar 2014
Posts: 32
depends what you boat is made from,
wood - you can over anode as well as under anode.
Steel - same thing
GRP - not so critical but knowledge of how and which anodes erode is important.
Its a black art, not my field - a good electrical guy will help.
Delta Tango is offline   Reply With Quote

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