SailNet Community - View Single Post - Rudder head corrosion
View Single Post
  #1  
Old 01-17-2003
aflanigan aflanigan is offline
Senior Member
 
Join Date: Dec 2002
Posts: 140
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 12
aflanigan is on a distinguished road
Rudder head corrosion

The rudder head on my Helms 24 which is presumably aluminum alloy exhibits pitting corrosion at its lower edges, presumably below the water line. I recall reading that aluminum doesn''t do well submerged because it cannot form a protective oxide coating like exposed aluminum. I guess this is why the bottom part is corroded (and underneath the stainless steel straps of the pintle bolted to the sides of the rudder head, there is also a whitish powdery crud).

I am wondering if a zinc chromate primer would be a good barrier coating to prevent any further corrosion on the rudder head. I have disassembled it and wire brushed down to bare metal as well as I could. Any thoughts?
Reply With Quote Share with Facebook