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  #171  
Old 03-04-2013
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Re: Frozen rudder shaft Hinterhoeller 28

I'd do the the shaft stuffing to. Or in my case I went for the PSS seal when we did the cutless bearing.
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  #172  
Old 03-04-2013
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Re: Frozen rudder shaft Hinterhoeller 28

Quote:
Originally Posted by rbyham View Post
this has been a good experience for me. I know the boat very well at this point which is a huge bonus.
That's what DIY is all about (as well as saving a few boat bucks).

As to doing your shaft stuffing, probably a good idea but be careful of the dreaded "as long as we're here we might as well...." or you'll never get launched.
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  #173  
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Re: Frozen rudder shaft Hinterhoeller 28

Congratulations on your great progress. I hate to be a wet blanket but want to alert you to a concern about the potential for galvanic corrosion arising from your use of graphite packing in the stuffing box.

To avoid galvanic corrosion contact between dissimilar metals should be avoided. Further,the greater the difference between metals on the galvanic corrosion scale the greater the potential for corrosion. Graphite and alunimum are far apart. If your rudder shaft is aluminum and you use graphite packing you will likely experince coorosion of the rudder shaft.
Galvanic Corrosion, theory documents Galvanic Bimetallic Corrosion

Flax packing is a better choice in this situation.
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Re: Frozen rudder shaft Hinterhoeller 28

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Originally Posted by Hudsonian View Post
Congratulations on your great progress. I hate to be a wet blanket but want to alert you to a concern about the potential for galvanic corrosion arising from your use of graphite packing in the stuffing box.

To avoid galvanic corrosion contact between dissimilar metals should be avoided. Further,the greater the difference between metals on the galvanic corrosion scale the greater the potential for corrosion. Graphite and alunimum are far apart. If your rudder shaft is aluminum and you use graphite packing you will likely experince coorosion of the rudder shaft.
Galvanic Corrosion, theory documents Galvanic Bimetallic Corrosion

Flax packing is a better choice in this situation.
Shaft coupling is or should be grounded through engine ground.
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  #175  
Old 03-04-2013
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Re: Frozen rudder shaft Hinterhoeller 28

Your option on the prop shaft packing. New wouldn't hurt...
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  #176  
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Re: Frozen rudder shaft Hinterhoeller 28

Thanks for the alert on galvanic corrosion. The shaft was actually determined to be stainless. Is grounding still advised in that case? If so how does one do that? No worries about wet blanket. This is a learn as I go and I want to get things right.
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Re: Frozen rudder shaft Hinterhoeller 28

Another question. If I decide to change stuffing in prop shaft box is that a right or left handed box nut and how do I tell for sure?
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Re: Frozen rudder shaft Hinterhoeller 28

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Originally Posted by rbyham View Post
Another question. If I decide to change stuffing in prop shaft box is that a right or left handed box nut and how do I tell for sure?
It will be a standard thread, I expect.. the lock nut should resist the tendency of the shaft to 'turn' the gland off if that's the rotation direction.
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  #179  
Old 03-05-2013
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Re: Frozen rudder shaft Hinterhoeller 28

I called the manufacturer today on the GTU packing. They told me no problems on the stainless rudder shaft. I am thinking about leaving it and checking on it occasionally.
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Re: Frozen rudder shaft Hinterhoeller 28

Graphite and SS are fairly close on the galvanic corrosion scale, therefore, the potential for corrosion is less than with graphite and aluminum, which are very far apart on the scale. Further, the relatively large size of the rudder shaft helps protect it from the graphite.
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