Recent content by fstbttms

Zinc is not "bad" in brackish water, it just doesn't provide the protection your boat needs in brackish water.

That's a very bad idea. Mixing anode materials creates a battery at worst and at best leads to rapid depletion of one of the anodes. In brackish water you should be using aluminum exclusively. BTW- Lead is not used for sacrificial anodes. Zinc is.

Zinc or aluminum, shorepower or no.

Use magnesium anodes in freshwater. Zinc is for sure a no-no and aluminum will work, but magnesium is best.

It takes a lot more than some spray paint to unbalance a prop. A LOT more.

Apples and oranges. Propspeed is a foul release coating and Prop Coat is simply spray paint with a lot of zinc in it. The price difference reflect the difference in effectiveness.

Are you saying that your boat is currently unpainted? :oops:

Well, it isn't because the strut is being protected by shaft anodes, that's for sure. And even in the few cases where the strut may be bonded to the engine block (and God knows why anybody would think that was good idea), the electrical path between the anodes and the strut is extremely long at...

Not standard practice at all. In fact, many more boats have no strut anode than do. Regarding the shaft anode protecting the strut- that doesn’t happen. The strut is electrically isolated from the shaft by the cutless bearing.

The day a hear boat owner not blaming another boat for his corrosion issues is the day I die a happy man. :D

Now Propspeed is a waterproof coating and will absolutely help protect your strut from corrosion. BTW- the blurb you quoted from the Performance Metals website is really basic stuff that every boat owner should know by heart.

Anti fouling paint is not a waterproof coating. In fact, it works by allowing water to penetrate its matrix. If there is any protection (such as you mentioned) being provided, it is negligible. I certainly have never seen any evidence of it in my 27+ years/30,000+ hull cleanings experience.

Why?

Are you simply looking for a new version of the original prop?

If it ain't broke, don't fix it.