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 Catalina 25 Specific Forum
 Mast height		  New Topic  Topic Locked
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jrchase11
1st Mate

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35 Posts
Initially Posted - 10/17/2010 :  08:33:10  Show Profile
Hi, just got my C25 about two months ago and still learning my boat. I measured my mast and it is 28 feet tip of extrusion to tip of extrusion. This seems to be right in between what I have read on this site. Trying to figure out if I have std or tall rig. PO said its std.

Also, I was moving mast in preparation for setting up my mast raising jig and discovered all of my pins that hold things in mast head fitting are "corrosion welded" to the mast head. Is this a concern? Should I replace masthead fitting.

Lastly, my two white halyard sheaves at masthead are severely cracked and I was going to replace them with some from CD (the black UV resistant ones), but could not tell if the sheaves were thick enough? Of course if I cannot get the pins out of the masthead fitting I guess I won't have to worry about this one.

Sorry for so many questions.
JohnC
'87 SR/WK #5658
Fleming Island, FL
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John Russell
Master Marine Consultant

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USA
3444 Posts
Response Posted - 10/17/2010 :  08:44:55  Show Profile
Welcome, John.
Standard rig. I've not faced the issues you have so I'll wait for others do that but, don't apologize for asking questions. It's what keeps the forum interesting. And, it keeps us ALL learning. Congratulations on your 'new' boat.
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dmpilc
Master Marine Consultant

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USA
4593 Posts
Response Posted - 10/17/2010 :  18:34:02  Show Profile
Welcome, John. Twenty-eight feet is indeed the standard rig mast length. The tall rig mast is 30 feet. If your masthead sheaves are cracked, they should be replaced. Generally, there are 4 sheaves at the masthead. Do you have all rope halyards, or wire plus rope? If the latter, serously consider changing to all rope, 5/16" line. Do you have internal halyards?
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Stinkpotter
Master Marine Consultant

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Djibouti
9081 Posts
Response Posted - 10/17/2010 :  19:09:10  Show Profile
<blockquote id="quote"><font size="1" face="Verdana, Arial, Helvetica" id="quote">quote:<hr height="1" noshade id="quote"><i>Originally posted by dmpilc</i>
<br />...Generally, there are 4 sheaves at the masthead...<hr height="1" noshade id="quote"></font id="quote"></blockquote id="quote">Two for internal halyards. '87 might have been just before the switch to them.
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glivs
Admiral

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USA
836 Posts
Response Posted - 10/18/2010 :  05:53:53  Show Profile
I'd try to free the pins before replacing the entire masthead fitting. Spray PBBlaster or similar product on pins and let sit for a day to work its way in any space that may remain and then try again to remove pins. The masthead is cast and not indestructible so use some care. As a last resort, use a center punch and then drill out the frozen pins. IMHO.

As this may be a possible indication of other corrosion issues, however, I suggest you carefully inspect all of your standing rigging very carefully and take action to protect it as needed.
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OJ
Master Marine Consultant

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USA
4382 Posts
Response Posted - 10/18/2010 :  07:58:42  Show Profile
I'm with Gerry . . .
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Sloop Smitten
Master Marine Consultant

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USA
1181 Posts
Response Posted - 10/18/2010 :  08:35:56  Show Profile
Pins are stainless steel. Extrusion is aluminum. Use heat from a propane torch. The different expansion rates should free the pins. You can break the aluminum trying to force the pin out using force. Don't ask how I know.
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islander
Master Marine Consultant

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USA
4024 Posts
Response Posted - 10/18/2010 :  14:17:30  Show Profile
<blockquote id="quote"><font size="1" face="Verdana, Arial, Helvetica" id="quote">quote:<hr height="1" noshade id="quote">Two for internal halyards. '87 might have been just before the switch to them.<hr height="1" noshade id="quote"></font id="quote"></blockquote id="quote">
I have an 87. 2 sheaves and internal all rope.
Edited by - islander on 10/18/2010 14:23:24
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OJ
Master Marine Consultant

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USA
4382 Posts
Response Posted - 10/18/2010 :  15:09:52  Show Profile
When I went to the ball bearing sheave - it was about half the width of the original white plastic (Nylon?) sheave. CD told me after I received them that I needed to add a second non-ball bearing sheave + a divider plate. :-/
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jrchase11
1st Mate

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35 Posts
Response Posted - 10/18/2010 :  16:07:41  Show Profile
<blockquote id="quote"><font size="1" face="Verdana, Arial, Helvetica" id="quote">quote:<hr height="1" noshade id="quote"><i>Originally posted by dmpilc</i>
<br />Welcome, John. Twenty-eight feet is indeed the standard rig mast length. The tall rig mast is 30 feet. If your masthead sheaves are cracked, they should be replaced. Generally, there are 4 sheaves at the masthead. Do you have all rope halyards, or wire plus rope? If the latter, serously consider changing to all rope, 5/16" line. Do you have internal halyards?
<hr height="1" noshade id="quote"></font id="quote"></blockquote id="quote">

All rope, internal. Trying to figure out which ones on CD are the correct replacements for the two "fat" nylon sheaves. The ones on CD with a bronze bushing look too thin. Naturally I don't want to replace with same white ones.

I guess from reading other posts I will have to buy extra sheaves and divider plate to "upgrade" to the uv resistant sheaves.

Thank you all for the help.

Plenty more issues / questions on the way. If I ever get in the water I will get some pics to add to my signature.
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islander
Master Marine Consultant

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USA
4024 Posts
Response Posted - 10/18/2010 :  17:18:53  Show Profile
It might be simpler to replace the sheaves with the same white ones. Heck the originals lasted over 20 yrs. Are you going to keep this boat that long? I'm sure you will be dropping the mast sometime in the next 20yrs so just throw a new set in when needed.
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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.