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 Catalina/Capri 25/250 Sailor's Forums
 General Sailing Forum
 adding a cheek block to boom		  New Topic  Topic Locked
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glivs
Admiral

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USA
836 Posts
Initially Posted - 08/01/2010 :  16:21:19  Show Profile
I would like to add a modest (40mm) cheek block to the boom so that I can route the tack reefing line down, out to the deck organizer and back to the cockpit. The boom cross-section, however, is oval so that the block when mounted will not lie flat against the surface. At most, the block would lie about 1mm from the boom but I'm concerned the leverage in pulling the reefline downward could be significant. How do I mount the cheek block?
Gerry Livingston, Malletts Bay, VT
"Great Escape" 1989 C-25 SR/WK #5972
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dmpilc
Master Marine Consultant

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USA
4593 Posts
Response Posted - 08/01/2010 :  16:26:06  Show Profile
There are/were cheeek blocks with a curved base to mount on a curved surface. Check online to see if they are still available. We have one on our C-2 boom.
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Tradewind
Admiral

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USA
531 Posts
Response Posted - 08/01/2010 :  16:30:20  Show Profile
That's my plan also, I'd like to find a curved base cheek block. If you find a source please post.
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Bill Holcomb
Admiral

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USA
769 Posts
Response Posted - 08/02/2010 :  05:48:22  Show Profile
An easy solution since the offset is small would be to use small flat washers to span the distance.

A more elegant solution would be to fashion a wooden base from teak with a curved side to fit against the boom. A hand held belt sander should do the trick.

Bill Holcomb - C25 Snickerdoodle #4839
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Stinkpotter
Master Marine Consultant

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Djibouti
9076 Posts
Response Posted - 08/02/2010 :  06:25:10  Show Profile
I'm guessing you need one of [url="http://search.defender.com/?expression=curved+cheek+block&x=0&y=0"]these[/url].
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cks
Navigator

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126 Posts
Response Posted - 08/02/2010 :  11:58:36  Show Profile
Why don't you just add a swivel block at the mast base (attached to the mast step) then to the deck organizer and led aft?
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Stinkpotter
Master Marine Consultant

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Djibouti
9076 Posts
Response Posted - 08/02/2010 :  12:06:56  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 cks</i>
<br />Why don't you just add a swivel block at the mast base (attached to the mast step) then to the deck organizer and led aft?<hr height="1" noshade id="quote"></font id="quote"></blockquote id="quote">I'm guessing he meant the <i>clew</i> reefing line--running it forward on the boom.
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islander
Master Marine Consultant

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USA
4018 Posts
Response Posted - 08/02/2010 :  14:16:49  Show Profile
When I changed my reefing to single line back to the cockpit, I mounted the tack cheek block on the side of the mast,Where it is flat, Not the boom. I was following the Harken single line system and this is how they mount it. It has worked for me just fine.

They recommend that the line be at a 45 deg angle.
Edited by - islander on 08/02/2010 15:07:15
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glivs
Admiral

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USA
836 Posts
Response Posted - 08/03/2010 :  18:12:51  Show Profile
oops...my bad - the <i>clew </i>reefing line is what I was referring to...thanks Dave
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cks
Navigator

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126 Posts
Response Posted - 08/03/2010 :  19:35:51  Show Profile
I just installed one recently. I found a harken block that only required 2 screws to attach. There is a horizontal line running through the middle of my boom that i thought was convenient. I drilled two holes, lathered the back of the block and self tapping SS screws with 3M 4200, and secured the blocks with the screws. It should take 15 minutes. BTW, don't leave the drill on the deck unsecured; don't ask me how I know
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DaveR
Master Marine Consultant

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USA
2015 Posts
Response Posted - 08/04/2010 :  05:47:28  Show Profile  Visit DaveR's Homepage
I've got all the hardware to single reef except the line & deck block, I just never reef so haven't run the line. It'd be easy to do, wouldn't cost much, give me another option and add to the value of the boat hhhhmmmmmmmm.
Edited by - DaveR on 08/04/2010 05:47:58
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Voyager
Master Marine Consultant

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USA
5352 Posts
Response Posted - 08/04/2010 :  19:59:46  Show Profile
Scott
That's exactly what I need. Nice illustration.
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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.