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Catalina 34

General Activities => Main Message Board => Topic started by: mregan on March 20, 2013, 03:11:52 PM

Title: Shaft size
Post by: mregan on March 20, 2013, 03:11:52 PM
Anyone happen to know the shaft size on the MK I.  I'm going to the Defender sale tomorrow and wanted to pick up a bunch of zincs.
Title: Re: Shaft size
Post by: Clay Greene on March 20, 2013, 03:38:04 PM
My memory and the manual agree it is one inch exactly.
Title: Re: Shaft size
Post by: Dave Spencer on March 20, 2013, 03:39:04 PM
Shaft is 1".  I like magnesium "zincs" for fresh water.
Title: Re: Shaft size
Post by: Ron Hill on March 20, 2013, 04:36:03 PM
mre : The shaft is 1 inch diameter.
 
To get a Zn that makes the best contact on the shaft look for the ones that have a "BB" inside.

a thought

I wouldn't think that Rhode Island location was fresh water?
Title: Re: Shaft size
Post by: Clay Greene on March 20, 2013, 05:25:40 PM
Dave is right about zinc not working in fresh water.  My Flexofold prop came with a zinc anode that I replaced after the first year. There was no evidence of pitting on it so it was not doing anything.  The magnesium anode showed significant "sacrifice" after one of our short seasons. 
Title: Re: Shaft size
Post by: Jim Hardesty on March 22, 2013, 03:01:37 PM
it's getting off the subject  but more info for fresh water sailors

http://www.boatmichigan.org/news_detail.aspx?ID=128

http://www.martyranodes.com/content/index.php

Jim
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