Propeller Problem

[rainbow]

Whenever my boat is on Table Rock, Bull Shoals or Taney for a couple days the stainless prop gets coated with a hard gray to the point you can't see any of the stainless. It is so hard you have to bead blast it off. Has anyone else had that problem before and if so what did you do about it.?

[fishinwrench]

Sounds like you might be keeping your boat moored overnite at a dock that is wired improperly. Check the condition of the zinc anode on your gearcase, is it heavily pitted ?

http://en.wikipedia.org/wiki/Electrolysis_of_water

[rainbow]

fishin wrench, I was wondering about that myself. I found some information on galvanic corrosion that operates the same way. I'll check the annode when I get to the boat and see what kind of shape it is in. Also might be my grounding on the motor that is a problem. I called the prop manufacturer and they had never heard of this problem. The guy I talk to at the Mercury plant said something similar to what you said.