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From: <rdiaz_at_ix.netcom.com>
subject: [Paddlewise] Me, too :-)
Date: Sat, 13 Feb 1999 09:49:08 -0800
I woke up this morning, turned on my computer in my office and found
various Paddlewise postings by Dave Kruger, Rich Mitchell and Jack
Martin and find myself agreeing with them on everything they said.  They
must be smart. :-)

Re: what to wear, wet suit, dry suit------

Dave Kruger's outfit (Goretex jacket; neoprene farmer john) is right on
as a great insurance policy at minimum financial outlay and with maximum
flexibility.  I too have the same Kokatat Goretex top.  It is one of the
least expensive Goretex jackets available for any format and has those
latex wrists that keep water out very effectively.  Like Dave, I prefer
the neoprene (Kokatat actually has switched to Darlexx Thermalastic I
believe because the material absorbs less water than neoprene while
being as, if not more, snug) neck to the latex gasket neck for the same
reason...venting.  For a total investment of around US$280, you have an
outfit that can be used in any condition of air and water temperature. 
Shed the jacket in 75 degree air temperature.  Wear layers under it in
colder conditions.  I use mine over a Polartec Watersports suit made by
Henderson.  I prefer it to neoprene farmer johns (which I also used
early on) because of less restriction, greater breatability and having
protection over my arms that a farmer John doesn't give.  But that
brings up your costs about another US$100.

I also have a coated nylon dry suit (Stohlquist).  And I get funny
here.  While I accept Goretex for a jacket, I still don't trust it for a
dry suit.  With a jacket that is going to let water in a bit anyway via
the non-latex neck and via the waist (snug but not watertight), I can
accept that the Goretex may not work well at some point.  In a dry suit
where your whole existence depends on it not letting anything in,
goretex failure would be cathastrophic.  I think a fully coated suit is
warmer than a Goretex one since it does not breath.  The action in
Goretex that lets body moisture through per force lets out body
heat...that is the way the process works.  If I am wearing my dry suit,
conditions are really cold and I want to keep in body heat.  Of course,
it may also be that I have a perfectly good suit and want to justify not
spending $500 for a Goretex replacement.  :-)

Jack Martin is right about testing the outfit out under controlled
conditions.  He is also right about the cheap neoprene gloves.  I think
that the cheap ones found in outdoor shop's fishing departments for
US$20 (I can't believe he found them for under $10!!) are better than
the higher tech ones sold in paddle shops for US$40-60.  The cheapos are
more flexible and, paradoxically, better suited for paddling I think.

Re extra sponsons---

Rich describes the ones that Long Haul Products makes pretty well.  They
are quite different from the sponsons seen built into folding kayaks. 
They are in a flat sheet rather than round and comprise of two narrow
round tubes.  The air volume looks like about half that of an ordinary
Klepper sponson from the Aerius I.  The Klepper Quattro's second set of
sponsons are much more voluminous than the Long Haul ones.  In the
Quattro, the second set of sponsons, when inflated, drastically change
the shape of the hull, rounding out or shallowing out the hard chines. 
It makes the boat much more stable but with what feels like more drag. 
It helps the Klepper for sailing but hinders it for paddling.  The Long
Haul ones probably will not round out the hull as much because they are
shallower.

I am not certain what the gain would be in having them in a Feathercraft
K-1.  It would be interesting to see.  It would give the boat a greater
sense of stability but it would change other handling traits.  Rounding
out a hull and its chines changes stability.  That is how the Khatsalano
operates in its convertible version...the one that has small sponsons
that you can inflate or not inflate.

ralph diaz


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"Where's your sea kayak?"----"It's in the bag."
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From: Dave Kruger <dkruger_at_pacifier.com>
subject: Re: [Paddlewise] Evaporative cooling with Goretex
Date: Sat, 13 Feb 1999 10:31:32 -0800
rdiaz_at_ix.netcom.com wrote:

> Re: what to wear, wet suit, dry suit------
> 
> [This] outfit (Goretex jacket; neoprene farmer john) is right on
> as a great insurance policy at minimum financial outlay and with maximum
> flexibility.  [snip]

> I also have a coated nylon dry suit (Stohlquist).  And I get funny
> here.  While I accept Goretex for a jacket, I still don't trust it for a
> dry suit.  With a jacket that is going to let water in a bit anyway via
> the non-latex neck and via the waist (snug but not watertight), I can
> accept that the Goretex may not work well at some point.  In a dry suit
> where your whole existence depends on it not letting anything in,
> goretex failure would be catastrophic.  I think a fully coated suit is
> warmer than a Goretex one since it does not breath.  The action in
> Goretex that lets body moisture through perforce lets out body
> heat...that is the way the process works.  If I am wearing my dry suit,
> conditions are really cold and I want to keep in body heat.  Of course,
> it may also be that I have a perfectly good suit and want to justify not
> spending $500 for a Goretex replacement.  :-)

Hmmmm, Ralph, you are making me think again, darn it!!  <G>

I don't own nor have I used a fully coated dry suit, so my comments may be
off the mark.  Nonetheless, I think if I had access to one, and an
equivalent Goretex unit, I might use the latter, and expect to be warmer,
*in the long run.*  Here's my rationale, though I'd be interested in the
experience of others (since I have none with fully-coated stuff):

Ralph makes a good observation:  that evaporative cooling from body
perspiration, passing through the Goretex, will increase cooling.  In my
experience, most of my sweating occurs when I am working hard, and I am
*plenty warm* at those times.  So evaporative cooling is not a problem
then.  Sometimes, after working up a sweat, and stopping for a while
(lunch, etc.), I cool off a little.  Usually I put on a warmer hat or
something.  During those rest breaks, the Goretex is still transpiring
water, so evaporative cooling is a significant heat-transfer mechanism (re:
conduction, anyway), but because I temporarily don some warmth, evaporative
cooling is not a problem then, either.  When I go back to paddling, I
generate some warmth, and evaporative cooling is again not a problem.  At
the end of the day, my insulating garments are a little moist, but are
still highly functional in insulating me,  **because the Goretex has
allowed my body moisture to escape.**

That's where I think the Goretex would be vastly superior.  In a fully
coated garment, I think all my insulation would be a *lot* wetter, and I'd
have to shed it while setting up camp and unpacking (etc.), and deal with
drying it out somehow.

The other factor which may negate any advantage the fully coated stuff
might have is that rain, paddlesplash, etc., will wet the outside of either
garment, giving lots of evaporative cooling from non-anthropogenic water.

So, what is the experience of others?  Is the fully coated stuff warmer,
despite what I *think* will happen?  (A good theory is just a good theory; 
experience judges theory.)

-- 
Dave Kruger
Astoria, OR
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From: Dave Seng <david_at_wainet.com>
subject: Re: [Paddlewise] Evaporative cooling with Goretex
Date: Sat, 13 Feb 1999 11:10:37 -0900
Dave Kruger wrote:

snip of Ralph's comments
>Hmmmm, Ralph, you are making me think again, darn it!!  <G>
 more snippage
>Ralph makes a good observation:  that evaporative cooling from body
>perspiration, passing through the Goretex, will increase cooling.  In my
>experience, most of my sweating occurs when I am working hard, and I am
>*plenty warm* at those times.  So evaporative cooling is not a problem
>then.  Sometimes, after working up a sweat, and stopping for a while
>(lunch, etc.), I cool off a little.  Usually I put on a warmer hat or
>something.  During those rest breaks, the Goretex is still transpiring
>water, so evaporative cooling is a significant heat-transfer mechanism (re:
>conduction, anyway), but because I temporarily don some warmth, evaporative
>cooling is not a problem then, either.  When I go back to paddling, I
>generate some warmth, and evaporative cooling is again not a problem.  At
>the end of the day, my insulating garments are a little moist, but are
>still highly functional in insulating me,  **because the Goretex has
>allowed my body moisture to escape.**
>
>That's where I think the Goretex would be vastly superior.  In a fully
>coated garment, I think all my insulation would be a *lot* wetter, and I'd
>have to shed it while setting up camp and unpacking (etc.), and deal with
>drying it out somehow.
>
>The other factor which may negate any advantage the fully coated stuff
>might have is that rain, paddlesplash, etc., will wet the outside of either
>garment, giving lots of evaporative cooling from non-anthropogenic water.
>
>So, what is the experience of others?  Is the fully coated stuff warmer,
>despite what I *think* will happen?  (A good theory is just a good theory;
>experience judges theory.)


  I no longer own my coated dry suit, but it seems to me that it might have
been a little bit warmer than my Goretex drysuit _while I was wearing it_,
but the disadvantage of having all that extra moisture trapped in my
insulating layers was quickly evident as soon as I took the drysuit off on
cool or windy days.  As long as I kept the drysuit sealed up tight I stayed
warm..... wet, but warm.
  As DaveK mentioned in his post, I too am usually more than warm enough
while I'm paddling, even at 15-20F (which is about where I draw the line for
fun cold-water paddling).  Overheating while paddling is often more of a
concern for me.
  So while I'll agree that a fully coated suit may be warmer than a
comparable Goretex suit, I don't think that the disparity is great enough to
make a substantial difference and the benefit of having drier insulating
layers when I peel out of the drysuit is more important to me - especially
on multi-day trips.  The slight difference in warmth is easily offset by
simply adding an additional insulating layer under the drysuit.

Dave Seng
Juneau, Alaska


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From: <rdiaz_at_ix.netcom.com>
subject: Re: [Paddlewise] Evaporative cooling with Goretex
Date: Sat, 13 Feb 1999 17:20:09 -0800
Dave Seng wrote:

>   I no longer own my coated dry suit, but it seems to me that it might have
> been a little bit warmer than my Goretex drysuit _while I was wearing it_,
> but the disadvantage of having all that extra moisture trapped in my
> insulating layers was quickly evident as soon as I took the drysuit off on
> cool or windy days.  As long as I kept the drysuit sealed up tight I stayed
> warm..... wet, but warm.

That _is_ the disadvantage of the fully coated vs. Goretex dry suit. 
Your insulation is wet when you strip the dry suit off.  The wetness
does not bother you while you have the coated dry suit on as long as it
is wicking type insulation.  You actually feel quite warm.  On trips
with people around me who are wearing the Goretex variety of dry suit,
they seem to have a greater need to add something warm at rest or lunch
breaks than I have.  And, I know I am going to be challenged on this, I
swear that you reach what I term a happy, relative level of humidity
inside the suit where you don't get any wetter; your body adjusts.  You
are wet but the wetness remains warm; it does not feel cold as long as
air is not passing over the insulation, which it isn't because you are
air tight inside the suit.

The great advantage of the Goretex is that moisture doesn't build up
inside, albeit that letting off of internal steam is limited when you
are in the cockpit of your kayak...afterall, the PFD won't allow
internal moisture to get through it and you lower body is encasted
inside the boat where moisture can't go anywhere.

(Of course, you can opt not to wear a PFD and sprayskirt and then the
Goretex suit would be fully functioning in letting off moisture while
paddling.  You probably don't need a PFD anyway as the air in the suit
will make you as bouyant as the Michelin Man.  Am I going to get in
trouble with stating such things? :-)  BTW, I have my tongue well in
cheek here.)

>From what you describe for yourself, I am talking to Dave Kruger, you
are fine with the outfit you have, i.e. Goretex jacket and farmer john
neoprene.  If you want to achieve slightly better insulation and greater
breathability, go for the Polartec watersport suit, but they do cost
about US$180 or so.  And for more warmth, add a vest of the same
material.

ralph diaz
-- 
-----------------------------------------------------------------------
Ralph Diaz . . . Folding Kayaker newsletter
PO Box 0754, New York, NY 10024
Tel: 212-724-5069; E-mail: rdiaz_at_ix.netcom.com
"Where's your sea kayak?"----"It's in the bag."
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From: Larry Bliven <foxhill_at_shore.intercom.net>
subject: Re: [Paddlewise] Evaporative cooling with Goretex
Date: Sat, 13 Feb 1999 20:36:08 -0500
From:ralph diaz

<snip>

>(Of course, you can opt not to wear a PFD and sprayskirt and then the
Goretex suit would be fully functioning in letting off moisture while
paddling.  You probably don't need a PFD anyway as the air in the suit
will make you as bouyant as the Michelin Man.  Am I going to get in
trouble with stating such things? :-)  BTW, I have my tongue well in
cheek here.)
================

early today as i approached a tidal river that i paddle frequently, i
mentally reviewed my equipment and realized that skirt and pfd were not with
me. i was wearing a Goretex dry suit.  slightly over 32 degree air, about 35
degree water, calm winds. i didn't see anyone from well before put in  - to
well after take out. total on water distance about 8 miles. it was an
invigorating paddle and the Goretex wicked as it is designed to do. My
assessment was that the ride was much more enjoyable than those when i wore
the pfd and skirt.

the pfd and skirt are back in the truck. i plan to use them.

My answer to answer Ralph's question, ' Am I going to get in trouble with
stating such things?'.... probably not.... but don't do it.


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From: Richard Culpeper <culpeper_at_norlink.net>
subject: Re: [Paddlewise] Evaporative cooling with Goretex
Date: Sat, 13 Feb 1999 22:34:51 -0500
In all seriousness, several of my friends and I have forgotten to don PFDs when
we are all bundled up in pile under dry suits for cold weather ww paddling.
What is sort of embarassing is that on one occasion none of us noticed that one
of us had forgotten his PFD until we stopped for lunch.

Cheers,
Richard

Larry Bliven wrote:

> From:ralph diaz
>
> <snip>
>
> >(Of course, you can opt not to wear a PFD and sprayskirt and then the
> Goretex suit would be fully functioning in letting off moisture while
> paddling.  You probably don't need a PFD anyway as the air in the suit
> will make you as bouyant as the Michelin Man.  Am I going to get in
> trouble with stating such things? :-)  BTW, I have my tongue well in
> cheek here.)
> ================
>
> early today as i approached a tidal river that i paddle frequently, i
> mentally reviewed my equipment and realized that skirt and pfd were not with
> me. i was wearing a Goretex dry suit.  slightly over 32 degree air, about 35
> degree water, calm winds. i didn't see anyone from well before put in  - to
> well after take out. total on water distance about 8 miles. it was an
> invigorating paddle and the Goretex wicked as it is designed to do. My
> assessment was that the ride was much more enjoyable than those when i wore
> the pfd and skirt.
>
> the pfd and skirt are back in the truck. i plan to use them.
>
> My answer to answer Ralph's question, ' Am I going to get in trouble with
> stating such things?'.... probably not.... but don't do it.
>
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From: David Carlson <qajaq_at_nwlink.com>
subject: Re: [Paddlewise] Evaporative cooling with Goretex
Date: Sat, 13 Feb 1999 18:06:18 -0800
In my experience, paddling in ~50F water and 40-70F air temps with
either a coated nylon or a gortex dry-suit, the gortex is vastly
superior, much more comfortable.  For me, the problem with coated nylon
is that it doesn't breath, and I overheat.  You still have to have
insulating clothing on under the drysuit to prevent hypothermia if you
end up being immersed any length of time, and because of that I end up
being overheated in a garment that doesn't breath.  I end up having to
drain perspiration out of the ankle and wrist gaskets periodically with
the coated nylon.  The goretex hasn't failed me yet as far as being
waterproof.  I test it quite thoroughly with regular rescue practice and
instruction, as well as practice rolling and surfing.  My current
goretex drysuit is 5 years old.

Dave Carlson

Dave Kruger wrote:
> 
> rdiaz_at_ix.netcom.com wrote:
> 
> > Re: what to wear, wet suit, dry suit------
> >
> > [This] outfit (Goretex jacket; neoprene farmer john) is right on
> > as a great insurance policy at minimum financial outlay and with maximum
> > flexibility.  [snip]
> 
> > I also have a coated nylon dry suit (Stohlquist).  And I get funny
> > here.  While I accept Goretex for a jacket, I still don't trust it for a
> > dry suit.  With a jacket that is going to let water in a bit anyway via
> > the non-latex neck and via the waist (snug but not watertight), I can
> > accept that the Goretex may not work well at some point.  In a dry suit
> > where your whole existence depends on it not letting anything in,
> > goretex failure would be catastrophic.  I think a fully coated suit is
> > warmer than a Goretex one since it does not breath.  The action in
> > Goretex that lets body moisture through perforce lets out body
> > heat...that is the way the process works.  If I am wearing my dry suit,
> > conditions are really cold and I want to keep in body heat.  Of course,
> > it may also be that I have a perfectly good suit and want to justify not
> > spending $500 for a Goretex replacement.  :-)
> 
> Hmmmm, Ralph, you are making me think again, darn it!!  <G>
> 
> I don't own nor have I used a fully coated dry suit, so my comments may be
> off the mark.  Nonetheless, I think if I had access to one, and an
> equivalent Goretex unit, I might use the latter, and expect to be warmer,
> *in the long run.*  Here's my rationale, though I'd be interested in the
> experience of others (since I have none with fully-coated stuff):
> 
> Ralph makes a good observation:  that evaporative cooling from body
> perspiration, passing through the Goretex, will increase cooling.  In my
> experience, most of my sweating occurs when I am working hard, and I am
> *plenty warm* at those times.  So evaporative cooling is not a problem
> then.  Sometimes, after working up a sweat, and stopping for a while
> (lunch, etc.), I cool off a little.  Usually I put on a warmer hat or
> something.  During those rest breaks, the Goretex is still transpiring
> water, so evaporative cooling is a significant heat-transfer mechanism (re:
> conduction, anyway), but because I temporarily don some warmth, evaporative
> cooling is not a problem then, either.  When I go back to paddling, I
> generate some warmth, and evaporative cooling is again not a problem.  At
> the end of the day, my insulating garments are a little moist, but are
> still highly functional in insulating me,  **because the Goretex has
> allowed my body moisture to escape.**
> 
> That's where I think the Goretex would be vastly superior.  In a fully
> coated garment, I think all my insulation would be a *lot* wetter, and I'd
> have to shed it while setting up camp and unpacking (etc.), and deal with
> drying it out somehow.
> 
> The other factor which may negate any advantage the fully coated stuff
> might have is that rain, paddlesplash, etc., will wet the outside of either
> garment, giving lots of evaporative cooling from non-anthropogenic water.
> 
> So, what is the experience of others?  Is the fully coated stuff warmer,
> despite what I *think* will happen?  (A good theory is just a good theory;
> experience judges theory.)
> 
> --
> Dave Kruger
> Astoria, OR
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From: Robert C. Perkins <rperkins_at_fayettevillenc.com>
subject: Re: [Paddlewise] Evaporative cooling with Goretex
Date: Sun, 14 Feb 1999 16:34:46 -0500 (EST)
I use a coated nylon rain jacket for protection in wet weather.  If the
temperatures are in the 30s and 40s F, I'm fine.  However, if the
temperatures are in the 50s and 60s F, I can end up almost as wet as if I
had been out in the rain with no jacket.  I stay warm as long as I'm
active, but then I need a complete change of clothes before I begin to cool
down.

Bob

--------------------------------------------------
Robert C. Perkins, Ph.D.
Associate Dean for Research and Planning
Methodist College, Fayetteville, NC 28311
910-630-7037     rperkins_at_methodist.edu


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From: <Tomckayak_at_aol.com>
subject: Re: [Paddlewise] Evaporative cooling with Goretex
Date: Sun, 14 Feb 1999 21:46:49 EST
In a message dated 2/13/99 1:37:30 PM EST, dkruger_at_pacifier.com writes:

<< That's where I think the Goretex would be vastly superior.  In a fully
 coated garment, I think all my insulation would be a *lot* wetter, and I'd
 have to shed it while setting up camp and unpacking (etc.), and deal with
 drying it out somehow. >>

You are right. I used a Goretex Dry suit for two week trip in SE Alaska. It
rained for eight days. I left the suit on to set up camp at the end of eight
hours of paddling and stayed warm and dry. 
Each morning the air was filled cries and profanity as my paddling partner
pulled on his wet and cold wet suit.
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From: Jack Martin <jcmartin43_at_radix.net>
subject: Re: [Paddlewise] Me, too :-)
Date: Sat, 13 Feb 1999 22:47:53 -0500
From:           	rdiaz_at_ix.netcom.com
Date sent:      	Sat, 13 Feb 1999 09:49:08 -0800
To:             	paddlewise_at_lists.intelenet.net
Subject:        	[Paddlewise] Me, too :-)

Ralph Diaz writes ---
> 
> I also have a coated nylon dry suit (Stohlquist).  And I get funny
> here.  While I accept Goretex for a jacket, I still don't trust it for a
> dry suit.  With a jacket that is going to let water in a bit anyway via
> the non-latex neck and via the waist (snug but not watertight), I can
> accept that the Goretex may not work well at some point.  In a dry suit
> where your whole existence depends on it not letting anything in,
> goretex failure would be cathastrophic. 

Not following the logic here, Ralph.  Are you concerned with the 
notion of the GoreTex --- the laminate --- failing or the drysuit 
failing?  I share your second concern, and wear the same 
Henderson suit as you do --- what used to be called Polartec 
2000S and now Thermal Stretch --- under my GoreTex dry suit for 
its dry insulation value as well as its ability to serve as a marginal 
wetsuit if a seal fails.  I floated around in this combination in 40 
degree F. water for about 20 minutes the other day to cool down --- 
air temps in the 55 degree F. range that day --- and was very 
comfortable.  Don't understand your concern about a "Gore-Tex 
failure" being "catastrophic".

Jack Martin
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