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post #21 of 32 Old 11-02-2007
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MiVelero; the good news is that your in-boom outhaul tackle has spent its life sheltered from the elements, and is likely in good shape. The pennant (wire or line?) that attaches to the sail (and rides the boom end sheave) may be worn.
My experience with my previous boat contradicts this. When I opened up the boom I found that the bearing on the sheave was completely shot and the friction negated any possible mechanical advantage.
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post #22 of 32 Old 11-02-2007
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This might help. Make sure that you don't have your boom upside down as there are tracks on the top and on the bottom of the Isomat boom, and the movable eyes that you are describing usually run along the bottom track...

Ignore the shuttleblock inside the boom, and you'll need to feed the the line from the gooseneck down through a tturning block and then back up through the sail, but it's pretty simple...


[IMG][/IMG]

Last edited by Sailormann; 11-02-2007 at 10:24 PM.
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post #23 of 32 Old 11-03-2007
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Originally Posted by pegasus1457 View Post
My experience with my previous boat contradicts this. When I opened up the boom I found that the bearing on the sheave was completely shot and the friction negated any possible mechanical advantage.
I was referring to the multipart tackle that is part of the outhaul... and suggesting that the single part from that tackle to the clew of the main was all that would/could need replacing. Of course, if the sheave was damaged that's another issue, and, you're right, a highly possible one.
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post #24 of 32 Old 11-03-2007
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Originally Posted by MiVelero View Post
I have a wire to rope splice thus I would need to feed the new one from aft since the loop at the end of wire is to large to pass through sheaves and the tackle - I presume-. At this point I do not feel comfortable drilling out rivets to remove end caps(sheaves) unless absolutely necessary. The sheaves and wire appear to be in good shape but the rope at the goose neck is looking dry and questionable.
So me thinks pull wire aft until I reach the rope, cut and secure new rope to pass forward is what I think I need to do to run the new outhaul.
I see... if you need to change the rope section coming from the gooseneck area then you do have to re-reeve that part.. You don't say the size of the boat.. in all likelihood there is more than just a rope/wire splice in there. There should be a multipart tackle to give you some purchase unless it's a smallish boat.
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post #25 of 32 Old 11-03-2007
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Sailormann- Just curious. In your diagram of the boom / reef line, they don't show any tack reefing lines - just the 1st and 2nd reef lines for the clew. What would be the typicla setup for the tack?
My 30' boat has no lines inside the boom, but I would like to see how this is set up.
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post #26 of 32 Old 11-03-2007
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Northeaster - most use tack hooks at the gooseneck for the tack while reefing. But you could use a similar system to a cunningham to rig up cockpit-led tack reef lines.
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post #27 of 32 Old 11-03-2007 Thread Starter
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Quote:
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I see... if you need to change the rope section coming from the gooseneck area then you do have to re-reeve that part.. You don't say the size of the boat.. in all likelihood there is more than just a rope/wire splice in there. There should be a multipart tackle to give you some purchase unless it's a smallish boat.
Faster, pardon my ignorance but what is re-reeve ? re-rivet?
The boat is a 34ft Hunter .
If I understand this right the wire is attached to a block inside the boom, said block has one end of the rope tied to it then trhu pulley sys and out to goose neck ?
If I drill out the rivets what type of rivets need to be used to resecure ?
or should this be left to professionals.... not that there are any available around here... So can a rookie like myself be able to do this?

At least it will not sink the boat if I screw it up.... RIGHT ?

Thank you again to all of you who have contributed to enlighten me.
OK so I'm slow .. I just do not like to dive into something with little information and make things worse.
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post #28 of 32 Old 11-03-2007
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On a 34 foot Hunter I'd expect at least a 4 part - hopefully a 6 part purchase inside the boom (similar to the mainsheet but smaller line). The aft end of the tackle will be shackled to the wire that comes out the boom end sheave and attaches to your mainsail clew.

You can check how many parts it is by seeing how much line you need to pull to get, say, an inch (2.5 cm) of outhaul travel. If it takes 6 inches of pull to get 1 inch, you have a 6:1 tackle.

By re-reeving I meant you need to run your new line properly through both blocks inside the boom. Since the bitter end of the tackle is on one of the blocks inside you'll have to get at that. This will require removing the rivets and pulling the boom off the end cap.

Rivets can be replaced with the proper tool and appropriate "pop" rivet style fittings. Make sure they are aluminum or stainless steel and of adequate size and strength. Alternately you may be able to thread the holes in the end cap casting and use machine screws.

This is certainly something you can do yourself, and yes, sinking the boat is not something you need to worry about (at least for that project!)
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post #29 of 32 Old 11-03-2007
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Quote:
Originally Posted by Northeaster View Post
Sailormann- Just curious. In your diagram of the boom / reef line, they don't show any tack reefing lines - just the 1st and 2nd reef lines for the clew. What would be the typicla setup for the tack?
My 30' boat has no lines inside the boom, but I would like to see how this is set up.
Sailormann's picture is of a single line reefing setup - it shows a single heading up the luff, the system does not use a reef hook. If you read the text it mentions the reefing line (r.l.) terminates in a stopknot in the luff reef cringle.

I would not open up the boom to mess with your outhaul unless your boat has been subject to a lot of wear-and-tear and you have run out of other things to fix.
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post #30 of 32 Old 11-03-2007
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..I would not open up the boom to mess with your outhaul unless your boat has been subject to a lot of wear-and-tear and you have run out of other things to fix.
MiV - SF has a valid point here... unless the outhaul line is really about to fail you might want to put your energy somewhere else. Try soaking the tail end in a bucket of mild detergent, followed by a good rinse... it's amazing how well some old lines clean up.
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