[quote=MN3]i replaced my upper rudder castings last year
the new set came unpainted and with steel rivets (in aluminum parts)
they spar shop that painted my casting replaced them with aluminum rivets to avoid galvanic corrosion.
recently my local repair shop was tuning my cat (as he was crewing for me in a race) and saw the rivets... he said they should be steel, as this is a place of constant tension (at least constant movement) and steel is needed for strength.. the aluminum ones will just wear out to fast.
He said corrosion is just a fact of life with these boats, and fresh water rinses after use should slow down (or prevent) corrosion.[/quote]
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