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 Catalina/Capri 25/250 Sailor's Forums
 Catalina 25 Specific Forum
 Turning Ball		  New Topic  Topic Locked
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William Matley
1st Mate

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52 Posts
Initially Posted - 05/18/2003 :  22:39:49  Show Profile
I just finished installing a new keel cable but the turning ball is are on back order from Catalina Direct.

I was looking at the old turning ball; it has a grove cut into it from the keel cable. I decided that I could put it on the lathe and trim it up good enough for this season and I'll replace it in the fall.

But there is something strange about the turning ball and I wonder if this forum's brain trust has any opinions about it.

I notice that the original grove cut into the turning ball seems too small for the cable diameter. The grove is so much narrower than the cable diameter that the weight of the keel would jam the cable into the ball grove. It's no wonder the ball eventually gets a grove cut into it by the cable and that the cable chafes. The grove is so tight, the cable would surely bind and begin sawing the ball in half.

I turned the ball on the lathe and opened up the grove to allow the cable to freely move in the ball.

So now my question is, what's the deal with the original equipment grove? Did I mess up something by enlarging the original grove? Why is it designed to be so tight?


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luckystar
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USA
236 Posts
Response Posted - 05/19/2003 :  00:38:41  Show Profile  Visit luckystar's Homepage
No expert here, but I would think that when the 1500 lbs of force is exerted on the cable, it probably fits snug into the turning ball groove. Just a guess.

Patrick Burnett, Little Rock, AR
S/V Lucky Star #2707 1982 SK/SR<br>
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Notice: The advice given on this site is based upon individual or quoted experience, yours may differ.
The Officers, Staff and members of this site only provide information based upon the concept that anyone utilizing this information does so at their own risk and holds harmless all contributors to this site.