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Catalina/Capri 25/250 Sailor's Forums

Catalina 25 Specific Forum

Masthead mystery question

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Esteban
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139 Posts

Initially Posted - 01/25/2005 : 21:12:16

Folks,

Im an hour and a half away from my boat and this week it has been below 20 degrees all week, so please don't call me lazy on this question.

I would like to add a bock on my masthead for a spinnaker halyard. Im looking at the illustration of the masthead assembly on the owners manual and it clearly shows a 2" rivet for a block. My mnystery is that it also shows the jib and main halyards running through the inside of the mast. I know my halyards don't run through the inside which leaves me a bit puzzled.

Can anyone shed light on my mystery? Yes - it's the original mast head and yes, it's a Catalina 25 Tall Rig. If you can save me a three hour drive and a full day lowering and raising the mast it would be really cool. Thanks a bunch.

Esteban

Esteban Diaz
Tally Ho!

Edited by - on

Frank Hopper
Past Commodore

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Pitcairn Island
6776 Posts

Response Posted - 01/25/2005 : 22:08:08

This is my spin block with external halyards. I have a standard rig so the mast head is slightly different.

Mine is on the left yours is on the right.

Edited by - on

aeckhart
Master Marine Consultant

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USA
1709 Posts

Response Posted - 01/26/2005 : 07:58:50

Esteban,

I have an 88 tall rig which is the same as in Frank's photo. If you want to add an internal spinnaker halyard, Catalina Direct has some "thin" masthead sheeves that they imply can be doubled up in the existing box. They also have the double exit block for the mast base. If you investigate this option with them and it can be done, could you let us know. I would like to add this to my boat if it's possible. I don't like that block cluttering up the masthead.

Al
GALLIVANT #5801

Edited by - on

Bill Holcomb
Admiral

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USA
769 Posts

Response Posted - 01/26/2005 : 09:04:43

Hey Estaban,

Here's a link to the parts manual in the Brochures section of the website. It shows the setup for rigging a spinnaker including the mast head block.

http://www.catalina25-250.org/manbro/pictures/pc22.gif

Bill Holcomb - Snickerdoodle #4839

Edited by - on

dlucier
Master Marine Consultant

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Virgin Islands (United Kingdom)
7583 Posts

Response Posted - 01/26/2005 : 09:39:59

Esteban,

Do you have roller furling?

The reason I ask is, when I put a block on the clevis pin for the spinnaker halyard, the block/halyard interfered with my upper furling swivel (Harken). You can probably picture how this might happen in Frank's photo.

To remedy this, I built a spinnaker crane to get the block out and over the furling swivel.

Just a thought...

Edited by - dlucier on 01/26/2005 09:45:07

Esteban
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139 Posts

Response Posted - 01/26/2005 : 11:29:57

Very cool on the help guys.

Yes - I have a roller furler. My upper furling swivel however is not completely maxed out in height. It's just a tad short if you will in order to redirect the the jib halyard at an agle to avoid wrapping it around when furling.

Bill - I see the illustration and Frank thanks for the pic. Both of these further puzzle me as I see the pin (rivet) for the fwrd masthead sheeve directly above the forward end of the mast. I can see how this works for internal halyards. The fact that I have external halyards and for that matter Frank's picture puzzles me as to how the halyard runs.

Franks picture shows his jib halyard entering and exiting alomst at the same point. Does it cross over before it rolls around the sheeve? Something I'm not getting here.

Not trying to turn this into a Warran Commission Report.

Edited by - on

atgep
Master Marine Consultant

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1009 Posts

Response Posted - 01/26/2005 : 11:51:02

I made a crane out of 1/8 stainless straps. They are cut, bent and bolted together. Once it was attached, it became qute sturdy. I am not sure if it would survive a knockdown, but dont plan on trying. It could be made and fitted in a couple of hours if you have good drill bits!

http://images.snapfish.com/3429987523232%7Ffp63%3Dot%3E2338%3D6%3A%3B%3D987%3DXROQDF%3E23237583387%3A3ot1lsi

http://images.snapfish.com/3429987523232%7Ffp4%3Enu%3D3247%3E5%3B%3A%3E896%3EWSNRCG%3D323284924%3A3%3B7nu0mrj

Tom.

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dlucier
Master Marine Consultant

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Virgin Islands (United Kingdom)
7583 Posts

Response Posted - 01/26/2005 : 11:56:58

<blockquote id="quote">quote:<hr height="1" noshade id="quote">Originally posted by Esteban
 ...Franks picture shows his jib halyard entering and exiting alomst at the same point. Does it cross over before it rolls around the sheeve? Something I'm not getting here...<hr height="1" noshade id="quote"></blockquote id="quote">

Esteban,

In Frank's photo, the jib halyard goes from the sail, into the masthead, then exits the rear of the masthead.

The other two lines you see are the main halyard going up and into the rear of the masthead then back down the front of the mast.

Edited by - on

Esteban
Navigator

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139 Posts

Response Posted - 01/26/2005 : 13:45:37

Don,

OK! Now Im getting it, but wait - are there two sheeves in the front and two in the back? I can't imagine both lines share one sheeve...

It's coming to light now - Im almost there. Thanks a million Don, Frank, Tom, Al, Bill.

Esteban

Edited by - on

dlucier
Master Marine Consultant

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Virgin Islands (United Kingdom)
7583 Posts

Response Posted - 01/26/2005 : 13:59:39

<blockquote id="quote">quote:<hr height="1" noshade id="quote">Originally posted by Esteban
 Don,

OK! Now I'm getting it, but wait - are there two sheeves in the front and two in the back? I can't imagine both lines share one sheeve...<hr height="1" noshade id="quote"></blockquote id="quote">

Yes, for external halyards, there are four sheaves in the masthead (two in front, two in back) and one halyard uses the port set and the other halyard uses the starboard set.

Edited by - on

Esteban
Navigator

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139 Posts

Response Posted - 01/26/2005 : 15:20:06

BINGO... now I've got it. Thanks Don!

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