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 Catalina/Capri 25/250 Sailor's Forums
 General Sailing Forum
 Halyard slipped off mast sheave		  New Topic  Topic Locked
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Kathleen Kalinowski
Deckhand

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1 Posts
Initially Posted - 07/16/2003 :  09:25:14  Show Profile
Does anyone have any tricks for geting the halyard back on the sheave?
Thanks-
Kathleen
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tinob
Master Marine Consultant

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USA
1883 Posts
Response Posted - 07/16/2003 :  10:03:08  Show Profile
Hi Kathleen,

This is one of my least favorite things to do about sailing. When it happened to me I spent days at the yard trying all manner of devices raised with the jib halyard that rode up under the main halyard and lifted the line over the sheave only to come off again when trying to use the halyard. Problem was a halyard sheave whose upper rim of the groove had crumbled with age. No amount of repositioning the line worked. The sheaves need to be replaced, not expensive for the parts but tacky since it usually requires that the mast be lowered. On a tall rig it's a little more tacky than on a standard rig. Once down it's a simple operation. Just pull the clevis pins holding the sheaves in place and replace the old with new.

Val on Calista # 3936



Val Bisagni]<img src="http://im1.shutterfly.com/procserv/47b3df11b3127cce94709c5ff2e90000000010" border=0>
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ClamBeach
Master Marine Consultant

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3072 Posts
Response Posted - 07/16/2003 :  10:14:48  Show Profile
Wire halyards or line?

You might try wrapping a little ball of tape on the wire/line and see if it will ride back on the sheave.

If you have the original wire halyards/sheaves, there is a little plastic 'plate' that goes between the sheaves and acts as a guide for the wire. It tends to deteroritate and crumble with age.

If it's 'gone away' the wire may not want to stay on the sheaves very well.

Currently maintaining two holes in the water...'77 Venture 23 and new to the family,
'78 Catalina 25
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Leon Sisson
Master Marine Consultant

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USA
1893 Posts
Response Posted - 07/16/2003 :  12:54:37  Show Profile  Visit Leon Sisson's Homepage
Kathleen,

I wouldn't hesitate to take the mast down. If there's something wrong up there that's causing problems, then it needs to be fixed. I wouldn't want to risk having a halyard jam when I really, really needed to get a sail down in a hurry. If you haven't inspected the masthead and spreaders areas lately, this would be a good opportunity to do so.

-- Leon Sisson


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Dave B
Admiral

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Mali
863 Posts
Response Posted - 07/16/2003 :  19:27:47  Show Profile
I agree with all of the above, although the spacer between the sheaves on our boat is aluminum. If your halyards are wire-to-rope and you decide to take down the mast, you might want to consider converting to all rope, which requires new sheaves (although some argue that it doesn't). I expect that one advantage of rope is that, with the wider sheaves and halyards, there's less opportunity for a jam. There's nowhere for the rope to jam--it basically has to stay on the sheaves.

If you decide to make the conversion, several of us found that Catalina Direct's kit included sheaves that were not quite large enough in diameter to allow the halyards to clear the edges of the masthead casting. Somebody here found a place on Long Island that would make custom sheaves precisely the size we needed--Bellpat Marine. Now, I see that CD is offering new sheaves--with ball bearings to boot. They may be the right size, and may not. Sorry, I don't have the specs at hand.

As for tricks... (without dropping the mast...) Helicopter? <img src=icon_smile_blush.gif border=0 align=middle>

Dave Bristle, 1985 C-25 #5032 "Passage" SR/FK/Dinette/Honda in SW CT
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frich
Captain

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USA
418 Posts
Response Posted - 07/17/2003 :  07:54:35  Show Profile  Visit frich's Homepage
Kathleen

I would take the mast down and put in the replacement sheaves from Bellpat Marine, here on Long Island. When I first found Ed it some weeks for him to make my sheaves, but now with the calls from fellow catalina owners he has a master die. It should only take a few days to get these.

ALERT TO ALL!! Rumor has it that Ed is pondering retirement I would stock up on an extra pair. His phone number is 631 286-8368

Frank r
84 C25 SK
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Steve Milby
Past Commodore

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USA
5913 Posts
Response Posted - 07/17/2003 :  13:25:07  Show Profile
<BLOCKQUOTE id=quote><font size=1 face="Verdana, Arial, Helvetica" id=quote>quote:<hr height=1 noshade id=quote> there is a little plastic 'plate' that goes between the sheaves and acts as a guide for the wire. It tends to deteroritate and crumble with age. <hr height=1 noshade id=quote></BLOCKQUOTE id=quote></font id=quote><font face="Verdana, Arial, Helvetica" size=2 id=quote>

I bought my boat new, and it had no plastic plates between the masthead sheaves. I suspect a previous owner might have fabricated them for your boat, Clambeach, as I did for mine. There is a little too much space between the sheaves, and it provides enough room for the thin wire halyard to slip between the sheaves. I cut three or four round discs out of a plastic "for sale" sign that I obtained at a hardware store. The discs were the same diameter as the sheaves. Then I slipped the discs between the sheaves so that the sheaves still turned freely, but there was no space between them. That ended the problem.

I agree that taking the mast down is the "easiest" way to do the repair.

Steve Milby "Captiva Wind" C-25 T/FK #2554
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ClamBeach
Master Marine Consultant

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3072 Posts
Response Posted - 07/17/2003 :  15:43:56  Show Profile
Interesting... dunno if the plastic spacer was stock or not. I have the impression that there was a lot of variablity in C25's from year to year.

The plate was more than just a spacer, it extended out beyond the sheaves both vertically and fore/aft so it would make it difficult for the wire to ride off in the first place.

I'm upgrading to all rope too though...



Currently maintaining two holes in the water...'77 Venture 23 and new to the family,
'78 Catalina 25
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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.