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halyard help

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lancej
1st Mate

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81 Posts

Initially Posted - 08/11/2003 : 16:07:10

I know this subject has been answered before, but I'll bring it up again.I have a 1985 standard rig, fin keel. I need to replace my halyards, and I would like to use all rope if possible. My questions are:

1) Would the stock sheaves work with 5/16 line? I know the rope section of my rope to wire halyards go through OK.

2) What are the various techniques reccomended for replacing halyards without dropping the mast??

Thanks in advance for the help!

Lance

Edited by - on

Dave B
Admiral

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Mali
863 Posts

Response Posted - 08/11/2003 : 16:39:49

Hi Lance...

My opinion is that, while the rope section will "go through" your sheaves, if you put some serious tension on all-rope halyards, they well jam in those sheaves and probably break them. They're old and brittle, and have deep, narrow groves. Mine had chips around some edges--probably from shackles running into them.

Catalina Direct's replacement rope sheaves used to be too small in diameter--they are advertising new roller bearing sheaves now, which may be the correct size. The required OD is 2" (1-7/8" absolute minimum) to keep the line from scraping on the masthead casting. If CD's aren't that size, Bellpat Marine in E. Patchogue, Long Island, makes them custom--they know exactly what you need for a C-25 with 5/8" external halyards, since they've made a bunch of them for association members. Their number is 631-286-8368.

Obviously, if you need to replace the sheaves, you need to drop the mast (unless you're really adventurous). Otherwise, there are a variety of ways you can use the current halyard as a "messenger" by attaching it to the new one--it just has to be an attachment that won't hang up going over the sheaves.

Best of luck,

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

Edited by - on

JoergK
Navigator

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USA
140 Posts

Response Posted - 08/11/2003 : 16:46:39

Dave,
you quote 5/8 halyards, Lance mentiones 5/16. What is the correct size?

Joerg
86C25 SR-SK Second Wind

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svmoxie
Past Commodore

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USA
331 Posts

Response Posted - 08/11/2003 : 16:49:55

1) Odds are that the rope section is just riding on top of the sheave since there is little to no load on them at that point. So unless they were changed from stock in the past it is worth swapping them out.

2) Drop the mast. Drop the mast. Drop the mast. It is much easier to work on and will allow you the time and relaxed physical state to do it right.

That being said, the only way to do this that I can see is to hoist yourself or be hoisted to the masthead with the spinnaker halyard and safety tie off to either the forestay or the back stay clevis. You will have to completely unload both the main and jib halyards to remove the sheaves.

No spinnaker halyard? That means that once your up and tied off, your stuck until the job is done. Don't drop anything... don't look down... watch out for the wake from that power boat swinging you like a metronome... you didn't drink a lot of coffee this morning did you?

All kidding aside, grab a six pack as a reward and ask two guys on the dock to help you... slacken all your shrouds, release the aft lowers, have them hold the mast and release the backstay and then help them walk the mast down forward to the bow pulpit rail. That way you can leave the foot in the tabernacle. Position the boat on the dock so the masthead is over the dock and work at your leisure. Check your spreaders, replace the anchor light bulb and steaming light bulb. Walk it back up, have them hold it in place and attach the back stay. Tighten the turnbuckles back to the original settings, (you did count how many turns you loosened them didn't you) and use some lanolin spray on the threads when you do. New cotter pins and crack a beer my friend, it's Miller Time.
<ul>
<li>Two hours from your day: Free </li>
<li>Six pack of beer: $7.00 </li>
<li>Having clean shorts at the end of the job: Priceless </li>
</ul>

Drop the mast!

Clif Thompson
Treasurer C-25/250 National Association.
svMoxie '81 25 sk

Edited by - svmoxie on 08/11/2003 23:12:29

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Buzz Maring
Master Marine Consultant

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1768 Posts

Response Posted - 08/11/2003 : 17:08:00

GTREAT post, Clif!

Buzz Maring
<img src="http://im1.shutterfly.com/procserv/47b3df23b3127cce9306a9b3abad0000001010" border=0>
~~Freya~~
C-25 SK/SR #68

Edited by - on

Dave B
Admiral

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Mali
863 Posts

Response Posted - 08/11/2003 : 17:18:09

<BLOCKQUOTE id=quote>quote:<hr height=1 noshade id=quote>
Dave,
you quote 5/8 halyards, Lance mentiones 5/16. What is the correct size?
<hr height=1 noshade id=quote></BLOCKQUOTE id=quote>
Uhhh... Sorry guys... 5/8ths would be a LITTLE BEEFY! 5/16ths it is. Senior moment. <img src=icon_smile_blush.gif border=0 align=middle>

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

Edited by - on

frich
Captain

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USA
418 Posts

Response Posted - 08/12/2003 : 07:23:39

Lance

I was just at Bellpat marine this past saturday. Because of the demand for these sheaves, Ed now stocks them. I believe they were $9.95 each. Mine have worked fine for the past 2 seasons.

Frank R
84 C25 SK

Edited by - on

ClamBeach
Master Marine Consultant

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3072 Posts

Response Posted - 08/12/2003 : 09:59:13

Note that the older mastheads (pre 1980??) seem to have 3/8" pins... the sheaves come with smaller holes...

The sheaves are easy to drill out, but it sure would be a revolting situation to get up the mast and find out they wouldn't fit.

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

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Dave B
Admiral

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Mali
863 Posts

Response Posted - 08/12/2003 : 11:05:11

<BLOCKQUOTE id=quote>quote:<hr height=1 noshade id=quote>
Note that the older mastheads (pre 1980??) seem to have 3/8" pins... the sheaves come with smaller holes...
<hr height=1 noshade id=quote></BLOCKQUOTE id=quote>
The "standard" size is 5/16". I'm betting Ed at Bellpat will drill them for you if you know you have the larger pins.

If you get sheaves from Catalina Direct, this could be more of an issue, since they say theirs have bearings. I don't know how drillable they would be.

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

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