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 Exit block on boom - forward		  New Topic  Topic Locked
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OJ
Master Marine Consultant

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USA
4382 Posts
Initially Posted - 05/02/2012 :  11:04:02  Show Profile
Doing my usual overthinking on the internal outhaul project.

Preparing to cut slot for exit block just behind the gooseneck casting.

Anyone done this, pix? lesson(s) learned?

Using this block:

1989 C25 TR/WK, #5822
1973 McVay Minuet 19
1975 Jester 12
1981 C25 SR/SK, #2428
1981 C22 SR/SK,
Tanzer 16
Sunfish

"There is nothing, absolutely nothing half so much worth doing as simply messing about in boats." Kenneth Grahame
Edited by - OJ on 05/02/2012 11:04:45

dmpilc
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Response Posted - 05/02/2012 :  11:24:25  Show Profile
OJ, use the block you pictured, placed about 12" back from the gooseneck, and bring the line back to a clamcleat that will retain the line when it is not cleated.

Both would be mounted under the boom.
If you want to bring the outhaul line back to the cockpit, place your block right behind the gooseneck and bring the line down to a turning block at the base of the mast.
Edited by - dmpilc on 05/02/2012 11:33:55
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redeye
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Response Posted - 05/02/2012 :  12:01:12  Show Profile
I surprised we havnt heard something back yet.. I think lots of folks have added these on the mast. I guess they are out mowing the grass.
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dlucier
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Virgin Islands (United Kingdom)
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Response Posted - 05/02/2012 :  15:21:46  Show Profile
You probably already know this, but mark the slot opening, drill the four corners, then make the straight cuts.
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OJ
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Response Posted - 05/02/2012 :  17:20:50  Show Profile
Thanks for the feedback.

I was thinkn' about placing the slot as far forward as possible - meaning I'd cut into the gooseneck casting - but I thought better.

News at 11 . . .

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pastmember
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Response Posted - 05/02/2012 :  18:21:50  Show Profile
Do you really need an exit block, couldn't it be simpler and cleaner to just cut a slot and leave it at that? Dremel buff the burs and edge and be done with it.
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dlucier
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Virgin Islands (United Kingdom)
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Response Posted - 05/03/2012 :  05:49:10  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 pastmember</i>
<br />Do you really need an exit block, couldn't it be simpler and cleaner to just cut a slot and leave it at that? Dremel buff the burs and edge and be done with it.
<hr height="1" noshade id="quote"></font id="quote"></blockquote id="quote">

I'm thinking he'll need an exit block as the line will be making a 90 degree turn downwards. Having just a slot at the turn wouldn't be good.
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OJ
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Response Posted - 05/03/2012 :  09:23:00  Show Profile
It would have helped if I posted the diagram below. Couple of differences (1) I am bringing the line out of the boom just behind the gooseneck (then, as Don explains, down the mast and back to the cockpit) (2) Using wire instead of line from the clew to the aft fiddle (3) the forward fiddle will be attached to the boom bail I am adding (a result of moving the traveler to the front of the cockpit.)



I'll be the first to admit that a 5:1 is a tad silly for a C25. There is more friction than I anticipated - so easing the tension for light winds may not work so well. I may end up changing to a 2:1.



It's still fun envisioning, positioning, drilling, filing, fastening, staring . . .
Edited by - OJ on 05/03/2012 09:46:41
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dmpilc
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Response Posted - 05/03/2012 :  09:25:35  Show Profile
The guy I raced with last night uses a pivoting lead block with cam cleat, instead of the cleat I pictured above, in addition to your exit block, so the outhaul line hangs down in the cockpit within easy reach. Works like a charm.
Similar to this:

In the 2nd drawing above, this would replace D and block E.

This can also be used to set up a double ended main sheet.
Edited by - dmpilc on 05/03/2012 09:42:47
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dmpilc
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Response Posted - 05/03/2012 :  09:49:43  Show Profile
Someone educate me here, how do you install padeye A in the diagrams above inside the boom? Is it through the exit block cut-out?
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dmpilc
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Response Posted - 05/03/2012 :  10:21:42  Show Profile
Found this:
http://www.pearsonariel.org/discussion/showthread.php?2005-4-1-internal-outhaul
Interesting.
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OJ
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Response Posted - 05/03/2012 :  10:52:02  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 dmpilc</i>
<br />Someone educate me here, how do you install padeye A in the diagrams above inside the boom? Is it through the exit block cut-out?
<hr height="1" noshade id="quote"></font id="quote"></blockquote id="quote">If I were using an <i>eyestrap</i> I'd probably use some combination of string and a coat hanger to manuver in into position.
Edited by - OJ on 05/03/2012 10:52:36
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OJ
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Response Posted - 05/08/2012 :  18:49:06  Show Profile
For those who like to putz with their boats - I am a putzmeister

Pencil mark near the left hole marks the end of the gooseneck casting


Drilled a series of holes - finished with file




On a recent post I said I almost always use rivets - almost



Notched gooseneck casting for exit block fastener



Closing-up unused holes
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redeye
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Response Posted - 05/09/2012 :  07:38:19  Show Profile
OK OJ now you got me wanting to try one...

I was thinkin I'd secure the line that goes through the block by just having it come outside the boom through a hole and then knot it.

http://www.apsltd.com/p-10203-halyard-exit-plate-curved.aspx

Kinda far down on my leaky list.. but sweet.. thanks for the inspiration.


Yours Rocks!
Edited by - redeye on 05/11/2012 05:42:48
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awetmore
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Response Posted - 05/09/2012 :  08:06:05  Show Profile
It looks nice. I would recommend rounding out the corners in the notch on the top of the slot though, those could act as stress risers and start a crack in the future. It's unlikely to turn into an issue, but I like to be as careful as possible with aluminum.
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OJ
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Response Posted - 05/09/2012 :  10:22:49  Show Profile
This is one of those <i>one thing leads to another</i> project Ray. Reefing and boom vang lines are next!

Great advice Alex about rounding the inside corners - will look for a small diameter file.
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pastmember
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Response Posted - 05/09/2012 :  11:04:13  Show Profile
Nicely done.
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redeye
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Response Posted - 05/09/2012 :  12:44:24  Show Profile
&lt;&lt; one thing leads to another &gt;&gt;

I like to call it.. "All We Gotta do is..."

but hey.. It's the journey... enjoy..

I keep forgetting we have dremmell tools now adays for this kind of work.

Looking at one of these for the bitter end..

Race Lite Exit Plates

http://www.apsltd.com/c-998-sheaveboxesandhalyardexitplates.aspx
Edited by - redeye on 05/11/2012 05:47:52
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