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Old 19-01-2013, 06:45   #1
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Rudder post bronze, aluminum steering Quad

I'm re-packing the stuffing box on a bronze rudder post. (Required removal of steering gear for other reasons) The steering quadrant came off fine only a few stiff bolts with very little corrosion. The boat is a 1979 Leigh 30 - all original steering gear and the quadrant is aluminum - in perfect shape. Bronze and aluminum? I don't get it, no corrosion. On the bronze heel fitting for the rudder there is no zinc of any kind. Can someone explain why there is not a problem here? I don't want to add zinc protection and invite problems. (Prop and stainless shaft are properly protected)
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Old 19-01-2013, 07:02   #2
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Re: Rudder post bronze, aluminum steering Quad

It is dry...... Galvanic action requires dissimilar metals in the presence of an electrolyte (sea water)
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Old 19-01-2013, 19:27   #3
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Re: Rudder post bronze, aluminum steering Quad

It may have had an anti-seize compound applied to the rudder shaft and bolts.
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Old 19-01-2013, 19:33   #4
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Re: Rudder post bronze, aluminum steering Quad

Probably both above.
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Old 19-01-2013, 19:46   #5
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Re: Rudder post bronze, aluminum steering Quad

Quote:
Originally Posted by Chenega View Post
I'm re-packing the stuffing box on a bronze rudder post. (Required removal of steering gear for other reasons) The steering quadrant came off fine only a few stiff bolts with very little corrosion. The boat is a 1979 Leigh 30 - all original steering gear and the quadrant is aluminum - in perfect shape. Bronze and aluminum? I don't get it, no corrosion. On the bronze heel fitting for the rudder there is no zinc of any kind. Can someone explain why there is not a problem here? I don't want to add zinc protection and invite problems. (Prop and stainless shaft are properly protected)
On reassembly remember neversieze is your friend.
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