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 Which mast base turning block?		  New Topic  Topic Locked
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Scott L
1st Mate

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52 Posts
Initially Posted - 01/30/2004 :  12:11:10  Show Profile
I am in the process of running my lines aft and need to decide which blocks to use at the base of the mast. I installed the CD mast base plate under the stock mast base. I bought one Big Bullet swivel block (the 2.25 in. seems fine too) to try and it seems pretty good (but what do I know?). Any thoughts would be appreciated.
Scott & Kelly Larson
"Ahti"
1980 SK SR
Southern Oregon
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Leon Sisson
Master Marine Consultant

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USA
1893 Posts
Response Posted - 01/30/2004 :  12:42:31  Show Profile  Visit Leon Sisson's Homepage
Scott & Kelly,

When routing my mast and boom control lines aft, I installed a variety of turning blocks at the mast base depending on line size and load. I usually prefer Harken blocks, but for the 3/8" halyards I chose Ronstan ball bearing series 30 as I recall because of their favorable SWL/$ ratio. For the lighter lines I went with Harken 22mm Micro and 1-1/8" Bullet. My deck organizers are the 1-1/2" Harkens. For clutches I have Spinlock XAS series. To cleat the smaller lines, I use Harken #423 series camcleats with fairleads.

I've put maybe 1,000nm on this setup so far, including ocean use and winds up to 2nd reef. So far the only failure has been a hairline crack in one of the clutch housings.

-- Leon Sisson
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Scott L
1st Mate

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52 Posts
Response Posted - 01/30/2004 :  13:01:56  Show Profile
Thanks Leon,
One question, when using the Bullet, am I correct in thinking that I need to use the swivel bullet off of the mast base plate?
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Leon Sisson
Master Marine Consultant

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USA
1893 Posts
Response Posted - 01/30/2004 :  14:07:08  Show Profile  Visit Leon Sisson's Homepage
Scott & Kelly,
Yes, all of my mast base blocks have swivels.
-- Leon Sisson
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Frank Hopper
Past Commodore

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Pitcairn Island
6776 Posts
Response Posted - 01/30/2004 :  14:18:54  Show Profile  Visit Frank Hopper's Homepage
I went with series 25 blocks from Garhauer.
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Captain B
1st Mate

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USA
88 Posts
Response Posted - 01/30/2004 :  14:44:43  Show Profile
Frank, Do you have the link to the blocks you've got? The only ones I saw came with deck plates.Thanks!
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dlucier
Master Marine Consultant

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Virgin Islands (United Kingdom)
7583 Posts
Response Posted - 01/30/2004 :  15:27:43  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 Captain B</i>
<br />Frank, Do you have the link to the blocks you've got? The only ones I saw came with deck plates.Thanks!
<hr height="1" noshade id="quote"></blockquote id="quote"></font id="quote">


Bryan,

It looks like he used [url="http://garhauermarine.com/index.cfm"]Garhauer[/url] swivel shackle blocks and added the springs, which can be bought separately. The springs help in keeping the blocks and lines off of the deck.
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Frank Hopper
Past Commodore

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Pitcairn Island
6776 Posts
Response Posted - 01/30/2004 :  15:39:31  Show Profile  Visit Frank Hopper's Homepage
Garhauer has a very limited web site. Most of what I have bought from them has come from phone conversations. 909-985-9993 You basicly have to tell the receptionist what you want and she will figure it out, mine have optional bearings and springs. The seris 25 items are a little large for our boats but OK, my cheek blocks on my boom are also G 25s
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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.