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From: Dave Kruger <dkruger_at_pacifier.com>
subject: [Paddlewise] Chasing Leaks
Date: Sun, 27 Aug 2000 19:26:37 -0700
Got a leak into the cockpit of my vintage 1993 Eddyline Wind Dancer, via the
side seam, **I think.**  I'm looking for help from others who have chased this
kind of leak.  Kind of a long story, perhaps for those who like a puzzle.

Water appears in the cockpit only when the yak is heavily loaded and I paddle
it through very rough water.  No leaks on flat water, and minimal leakage when
lightly loaded and paddled in rough water.  I am certain the water does not
enter via the sprayskirt or at the coaming/sprayskirt juncture. (no water on me
or gear under those places).

I had thought the entry point was via the rudder cable channel, which runs
through an "H"-shaped plastic extrusion Eddyline uses to keep the two halves of
the yak in registration when they are married in fabrication.  The inside of
the seam joining top and bottom is covered with a healthy strip of mat and lots
of resin -- and appears to be intact in the cockpit region.  The only hole in
that seam is at the point where the rudder cable enters the cockpit.  (BTW, no
leakage into either forward or aft bulkheaded compartment.)

So I injected water into the rudder cable rear entry, with the yak more or less
on its side, and looked for water entering the cockpit at the other end of the
cable (about where my hips are, re:  fore and aft).  A very **small** of water
appeared.  Humph.  Can that be the source?  I get a quart or so of water over
an hour of paddling.  Seems like there must be another source.

Then I set the yak right side up and injected water along the top of the
H-shaped extrusion, outside the hull, 'cause I could see the extrusion was not
bonded to the seam-making mat/resin there.  Nothing at the rudder cable hole. 
But, what's this?  Some water appeared forward ... more or less at the position
of the screws which hold my rudder pedal track on that side.

Tightened all those screws and tried the same water injection, same site, and
could not see any more water inside.  So I put a couple gallons inside the yak
and rolled it back and forth over the areas I had just tested and looked for
water outside the hull.  None.  Have I fixed this thing?

Anybody had this problem on an Eddyline ... and identified the source of the
leak?

Anybody got suggestions for other tests?

Thanks for the help.

-- 
Dave Kruger
Astoria, OR
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From: Peter Treby <ptreby_at_ozemail.com.au>
subject: RE: [Paddlewise] Chasing Leaks
Date: Mon, 28 Aug 2000 13:15:53 +1000
Dave:
Having suffered frustration in finding leaks in a boat also joined by a "H"
section vinyl extrusion, I suggest supporting the boat on cradles under the
cockpit, and filling the cockpit with water. Watch for drips or worse.
(Thought here: why not put some Condy's Crystals, potassium permanganate, in
the water, and watch for purple drips... entertain the kids while you repair
your boat.)
Drips from one area of the H section extrusion do not necessarily mean the
leak is there, as water can run along inside a way. If the extrusion is the
problem, my solution was:
1. fully prepare the inside seam, sanding and acetone cleaning;
2.3" tape and epoxy the entire seam, second coat of epoxy to fill the weave;
3. fill the H seam on the outside of the boat with "Sikaflex", polyurethane
sealant.
My boat, however, does not have the rudder cable running inside the
extrusion. This may add another infuriating leakage possibility.
Good luck.
Peter Treby
37* 42' S 145* 08' E



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From: Bill Hansen <bhansen2_at_twcny.rr.com>
subject: Re: [Paddlewise] Chasing Leaks
Date: Mon, 28 Aug 2000 09:50:03 -0400
Dave - you may have fixed your leak. Obviously, the next thing to do is to
test-paddle the boat either in rough seas, or while doing some
rolling-rescue practice.

If you're still seeing water inside, (1) be sure your spray skirt is intact;
little tears and/or slightly poor fit can let a lot of water in - (2) repeat
the test you've already done, making sure the boat is dry on the outside.
Have the spray skirt on securely, then s-l-o-w-l-y tip the boat to one side,
all the way so that water comes up onto the spray skirt on the inside. hold
it there for several seconds. Repeat on the other side. Be sure there's
enough water in the boat so that water will reach everywhere you might have
a leak. If there's any question that leakage might be coming from a forward
or aft compartment, test these separately, but s-l-o-w-l-y rotate the boat
all the way around, so that you're testing the seal of bulkhead to deck as
well.

A leak which looks minor during testing can let in a surprisingly large
amount of water during a paddling session.

If you're still getting significant leakage through your rudder mechanism,
it's probably a good idea to call Eddyline and ask them how to proceed.
There are several different ways to approach this problem, and they'll
surely have had experience with it in the past.

Bill Hansen
Ithaca NY

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From: Bill Hansen <bhansen2_at_twcny.rr.com>
subject: Re: [Paddlewise] Chasing Leaks
Date: Mon, 28 Aug 2000 09:53:21 -0400
Dave - As so often happens, I forgot one of the most important things when I
wrote my last post. Be absolutlely sure that the boat is very well supported
when you do your tests. I know that you've already thought of this - but the
spectre of a boat deforming under the stress of water inside it and poor
support outside it gives me the shivers. It might not happen - but it's so
easy to prevent....

Bill Hansen
Ithaca NY

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From: obrien <obrien_at_proaxis.com>
subject: Re: [Paddlewise] Chasing Leaks
Date: Tue, 29 Aug 2000 14:19:44 -0700
	I found a leak in our Heritage Nomad by pressurizing it with a shop vac
then using soapy water.  I duct taped some cardboard in place of a hatch
and punched a hole for the shop vac tube.  With the tube on the blower side
I turned on the vac and quickly found that I needed to enlarge the hole to
vent some of the excess pressure.  After trying again, I soaped every
suspicious spot and immediately found the problem.  I found some other
smaller leaks in the rear bulkhead as well.  

						Bill


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From: Gabriel L Romeu <romeug_at_erols.com>
subject: Re: [Paddlewise] Chasing Leaks
Date: Thu, 31 Aug 2000 19:53:55 -0400
I do Bill, even more if I do this getting straight into a warm boat.  I
have a really tight palm skirt and when I put my dark boat (until I
paint it next week) off the car top and onto hot sand, launch it and
tip, it seems to suck water in which I attribute to the change of the
air pressure.  Happen a lot less on cooler days.    There is a
noticeable depression on the deck of the skirt as as the air inside the
cockpit cools down right side up.

otherwise, I do get a tiny bit of leakage in the combing in any event
over time.

Bill Hansen wrote:
> 
> Evan writes, RE: leak in Eddyline kayak, after careful testing   <I more or
> less (by process of elimination) concluded it had to be my spray skirt >
> 
> IMO - That's not an unreasonable source of modest leakage. I also get a
> little bit of leakage during rolling practice, which I believe comes in at
> the point where sprayskirt meets coaming. Doesn't everyone?
> 

-- 
:                         :
Gabriel L Romeu                                                      :
http://studiofurniture.com  furniture from the workshop               :
http://members.xoom.com/gabrielR  life as a tourist, daily
journal         :
http://studiofurniture.com/paint  paintings, photographs, etchings,
objects
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From: Dave Kruger <dkruger_at_pacifier.com>
subject: Re: [Paddlewise] Chasing Leaks
Date: Wed, 13 Sep 2000 11:24:19 -0700
A follow-up to a 27 August posting I made regarding a leak into the cockpit of
my 1993 Eddyline Wind Dancer:

1. Water was entering via the rudder cable channel, despite the manufacturer's
skepticism.

2. I eliminated the leak by covering the rear entry hole for the rudder cable
-- a small piece of electrical tape was all that was required.  Only a small
clearance is needed for the cable to slide freely.

-- 
Dave Kruger
Astoria, OR
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From: M. Wagenbach <wagen_at_u.washington.edu>
subject: Re: [Paddlewise] Chasing Leaks
Date: Wed, 13 Sep 2000 18:34:04 -0700 (PDT)
Dave Kruger wrote:
<A follow-up to a 27 August posting I made regarding a leak into the
cockpit of
my 1993 Eddyline Wind Dancer:

1. Water was entering via the rudder cable channel, despite the
manufacturer's
skepticism
>

Dave, have you stuck with the Wind Dancer(s) due to a "better the devil
you know than the devil you don't" philosophy?  :^D

Mike Wagenbach

"I like to get to work early, so I can discard a pet hypothesis before
breakfast."  -Konrad Lorenz 

I'd settle for Happy Hour.



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From: Dave Kruger <dkruger_at_pacifier.com>
subject: Re: [Paddlewise] Chasing Leaks
Date: Wed, 13 Sep 2000 20:28:53 -0700
"M. Wagenbach" wrote:

> Dave, have you stuck with the Wind Dancer(s) due to a "better the devil
> you know than the devil you don't" philosophy?  :^D

Partly that,yes.  And partly because it has high initial stability for gawking
at things ... and an enormous amount of room for cargo.  'Round here we call it
"the cargo barge," and it goes on all the long trips.

Dan Hagen congratulated me once (a year ago or so) when I found a boat slower
than the Wind Dancer ... the WD is pretty damn slow.  I own a Sea Star, which
is somewhat faster, and has almost as much room, but somebody else always grabs
it.

-- 
Dave Kruger
Astoria, OR
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