Author Topic: Sacrificial anodes (Read 971 times)

gcapehart · « **on:** June 05, 2007, 10:02:48 AM »

While at home we launch in a fresh water river(Penobscot) and run between 8-12 miles before we reach salt water. Then too when we go to the Cape or Mt. Desert we launch directly into salt water. Do I really need to change my anodes to a fresh water type and then back to salt water type? I just put new lead anodes on. Gary

John Jones · « **Reply #1 on:** June 05, 2007, 12:33:21 PM »

Are you sure they are lead? Usually it's zinc for salt and magnesium for fresh. I did read about a new alloy but I don't remember what it is. Magnesium will work in salt, they just don't last very long. Zinc does a poor job in freshwater.

gcapehart · « **Reply #2 on:** June 06, 2007, 09:16:03 AM »

So are you saying that if I do both the magnesium would be better? If it erodes/corodes faster, that is magnesium in salt water does that then offer more protection for the motor? Thanks, Gary

John Jones · « **Reply #3 on:** June 06, 2007, 11:44:40 AM »

I don't know if magnesium offers more protection in salt but it does protect while it lasts.

Author Topic: Sacrificial anodes (Read 971 times)

gcapehart

Sacrificial anodes

John Jones

(No subject)

gcapehart

Yes they are zinc.

John Jones

(No subject)