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From: Evan Dallas <Evan_Dallas_at_notes.ntrs.com>
subject: [Paddlewise] Tarps
Date: Thu, 9 Jan 2003 11:29:56 -0800
Just my 2 cents:  Regarding ropes, I have a preference for the polyester
ropes, which don't stretch as much as nylon and hence don't require as much
adjusting to keep the tension on the tarp.  Also, note that a strong wind
can impose *very* strong loads on the tarp.  For that reason, I always use
at least 1/4 inch rope for my ridge line.

Another thing -- most of the tarps that are made with grommetted corners
aren't reinforced very well -- the most I've seen is where they simply
double the fabric.  As a rule, polyester and especially nylon fabrics (as
opposed to, say, canvas), being slippery and thin, by their nature don't
hold grommets very well.  But even if the material is reinforced better
than that, grommets just don't have that much material to bite onto,
especially where strong gusts could inflict a hundred or more pounds of
force on the connection.  Maybe this is overkill, but I created my own
corner attachments for my tarps by sewing a yard or so of nylon or
polyester webbing (I think 3/4 inch wide) along the outside seam of each
corner, forming a loop at the corner (for attaching a rope) that comes back
around onto itself, then continues down the other side of the corner.  Sort
of like this:
                    _
________|__)
                   |
                   |
                   |
                   |

Then, since most tarps don't have nearly enough attachment points on the
sides (and sometimes only on the corners!), I cut triangles of
reinforcement material for placement where I want an extra attachment point
which I glue (I use contact cement) and sew these to the tarp (again,
probably overkill, but it's easy and I believe this makes the reinforcement
much stronger), then sew a loop of webbing onto the reinforced area for
attaching the rope to.  I've never regretted doing this, since you never
know where you'll need to tie on -- especially if you're camped on cramped
or irregularly shaped area.  I like attachment points at least every 6 feet
or so.

One other quick tip:  If you really need to tie a rope where there isn't an
attachment point, put a smooth rock (maybe golfball size or a little
smaller) on one side of the tarp, wrap the loose material around the rock
enough that you can tie a loop of rope around it from the other side.

Evan Dallas, tarp-lover, grommet-hater
Woodinville, Washington


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From: Mel Grindol <mel_at_grindol.com>
subject: Re: [Paddlewise] Tarps
Date: Wed, 8 Jan 2003 06:48:56 -0700
> From: "Dave Kruger" <kdruger_at_pacifier.com>
> 
> The emphasis in this thread so far has been on stoves.  Let's turn to 
tarps.

I agree, a good tarp can go a long ways.  Now if I can only convince my 
father that a tarp should be put up under tension.  He is from the old 
school that believes putting up a tarp under tension will ruin the 
tarp.  So every tarp he puts up sags big time.

I do have a question: What type of rope do you use?  And do you rely on 
some form of tensioner for the rope or just use a good knot (and if so 
which one)?

Currently I'm using this bulky yellow rope that floats.  Upside it 
floats, downside it's bulky.

Mel
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From: firefly <firefly_at_eatel.net>
subject: Re: [Paddlewise] Tarps
Date: Wed, 8 Jan 2003 14:02:01 -0600
I use drapery cord, (available at hardware stores) but that works because I
use the ultralight Silnylon tarps.  As for knots, I learned a slipknot which
I learned so long ago I cannot possibly describe it. It's a standard knot
used for adjusting the tension on tent stakes. I don't use those little tiny
metal tensioners. They're too much trouble to keep up with.  Marsanne

>>
> I do have a question: What type of rope do you use?  And do you rely on
> some form of tensioner for the rope or just use a good knot (and if so
> which one)?


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From: Michael Daly <michaeldaly_at_rogers.com>
subject: Re: [Paddlewise] Tarps
Date: Wed, 8 Jan 2003 17:15:40 -0500
From: "Mel Grindol" <mel_at_grindol.com>

> I do have a question: What type of rope do you use?  And do you rely on 
> some form of tensioner for the rope or just use a good knot (and if so 
> which one)?


I use either light nylon or polyester braided line.  

For knots, I use a midshipman's (aka tautline) hitch at the
grommet end.  For the other end (tree, deadman whatever) 
I use whatever works (bowline and timber hitch variants mostly)

Mike
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From: Craig Bowers <craig_at_bowers.net>
subject: RE: [Paddlewise] Tarps
Date: Wed, 8 Jan 2003 14:46:03 -0800
>I do have a question: What type of rope do you use?  And do you rely on
>some form of tensioner for the rope or just use a good knot (and if so
>which one)?

I usually use parachute line.  It's pretty common in outdoor stores.
It's a thinnish rope so you can pack lots of it in a small space.  It has
a nylon core with a tightly woven sheath, a little less than the
thickness of a pencil.  It's dirt cheap to buy as well.  It lets you keep
a couple hundred feet in not a lot of space.  Besides for tarping I use
it along with carabineers and the odd pulley for tossing and hoisting
lines between trees for overnight pack hoisting.  You can also get small
net bags that can expand to hold a tremendous amount of light loose gear
for hoisting.

Normally I can the tarps and lines pretty tight and just tie off with a
clove hitch either back around to the line itself or an adjacent branch
or stump.  The half hitches are soo easy to do under tension with one
hand while the other holds tension.  And they come undone very easily
when needed even when wet or have been under tension for a long time, as
soon as you release some tension.

When you need a rope attachment point where you don't happen to have a
grommet hole in a tarp, you can use small smooth pebbles.   Wrap the edge
(or even the middle) of the tarp around the pebble, then loop/tie the
rope around the tarp where you gathered it around the pebble.  The pebble
prevents the tarp from slipping through the loop of the rope, and you can
attach the rope where ever you need it.  For example if you need a center
support somewhere and don't have a pole, you can instead attach a rope
from above, to that spot (even in the middle of a tarp) and spot suspend
it from above.

The main thing I find with tarps is pre-envisioning the water flow paths
when it rains (accounting for sag and pooling) and putting that runoff
where you'll want it so it doesn't come back under the tarp into the
people space.  Sometimes in addition to the tensioning of the lines to
angle the water where you want, even a small rock resting on top in a
specific spot can be helpful to create a valley and collect all water to
a particular runoff spot.


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From: Dickson, Dana A. <dana.dickson_at_unisys.com>
subject: RE: [Paddlewise] Tarps
Date: Wed, 8 Jan 2003 08:05:57 -0600
Like Dave, I am a great fan of tarps on kayaking trips.  You can find an
article I wrote on tarps at http://www.isk.canoe-kayak.org/howto/tarps.html.
On trips the group I am with will carry two Cook Custom Sewing 10x12
silicone impregnated tarps.  These tarps are compact, lightweight and
incredibly tough.

Dana Dickson


 > -----Original Message-----
 > Date: Tue, 7 Jan 2003 08:25:52 -0800
 > From: "Dave Kruger" <kdruger_at_pacifier.com>
 > Subject: Re: [Paddlewise] Backpacking stoves and tarps
 > 
 > The emphasis in this thread so far has been on stoves.  
 > Let's turn to tarps.
 > 
 > I use a tarp at almost every campsite, mainly because I paddle in wet
 > places.  Typically, the tarp is the first thing to go up, 
 > for use in staging
 > and unpacking ... because it is raining when we arrive!  
 > What do I use?
 > Simple stuff.  I've owned and tested fancy ones and in the 
 > end I prefer
 > plain old rectangular, grommetted-on-the-edge coated nylon 
 > tarps.  The ones
 > with aerodynamic shapes do not allow a canopy effect, 
 > permitting rain to
 > swoop under the edges.  And, with the addition of tie points 
 > (to sewn-on
 > loops of webbing) at several places on the top of the tarp, 
 > I can skyhook to
 > limbs, etc., above, and avoid the dreaded center pole.
 > 
 > I have used a 7 x 9 for two, a 10 x 10 for two, a 10 x 12 
 > for four, and a
 > bud has an 18 x 12 that is dandy for half a dozen seated 
 > eaters and cribbage
 > players.  When in doubt, go one size larger than you think 
 > you will need.
 > The "edge effect" of blown moisture makes that extra foot of 
 > dimension into
 > what seems like more than another foot of room when the rain falls.
 > 
 > Coated nylon works better for me than the cheaper woven 
 > polyethylene ("blue
 > tarps") because the nylon is easier to modify or sew to, is 
 > much quieter in
 > the wind, and packs down smaller in the front hatch.
 > 
 > I paid about $35 for my 10 x 10 and a 10 x 12 runs about $40 
 > from Campmor
 > these days.  I'll sell my fancy-Dan tarps (Marmot, Kelty) to 
 > anybody with
 > ready cash.
 > 
 > I do not carry poles, and rarely use stakes.  The former is 
 > too bulky, and
 > the latter almost never work in sand or on rock (where I 
 > seem to camp, most
 > days).  Buried deadmen work well in sand, and on a rocky surface,
 > porta-rocks are the anchor of choice.  If  I do carry 
 > stakes, I take the
 > wimpy backpacker ones, 'cause they're small to pack and work well in
 > consolidated sod.  Otherwise, I saw/chop my own out of 
 > downed wood.  Center
 > poles are not a problem in my part of the Northwest, 
 > although in areas like
 > national parks or other locales demanding minimum impact 
 > camping, I would
 > carry poles, to avoid conflict with wood harvest rules.
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From: Philip T <skerries_at_hotmail.com>
subject: RE: [Paddlewise] Tarps
Date: Wed, 08 Jan 2003 18:40:44 +0000
Wow, Dana and Dave are two paddlers after my own heart (or should that be 
"my own tarp"). I'm a huge tarp fan too.
Great article Dana - and most amusing photo. My own effort along these lines 
is at http://www.adventurekayakmag.com/Vol%201%20Iss%202/Roomswithaview.html

BTW, old Paddlewise hands may recognise my name from a couple of years back. 
Work load has kept me off the list for a while and I'll be subscribing and 
unsubscribing as it flucuates, but hello to old friends and new ones. As my 
signature line explains, you can't email me backchannel until I put you on 
my accept list, but I'll be happy to add any Paddlewisers to the list - just 
include a request in some other regular posting to Paddlewise (Hope that's 
okay with you Jackie!)

Philip
N49°16' W123°06'
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From: Dave Kruger <kdruger_at_pacifier.com>
subject: Re: [Paddlewise] Tarps
Date: Wed, 8 Jan 2003 13:53:04 -0800
Mel Grindol" <mel_at_grindol.com> wrote:

>> I do have a question: What type of rope do you use?  And do you rely on
some form of tensioner for the rope or just use a good knot (and if so
which one)? >>

Nylon lines, either the parachute cord (nominal diameter 1/8 inch) or larger
sheathed stuff (1/4 diameter).  The larger diameter stuff gets used for
corners and wherever I want greater strength and/or less stretch when wet.
I end up with an assortment of lengths, from 3-foot shorties to 30-footers.
I use the small diameter stuff for short ties to adjacent limbs, etc.
Sheathed dacron (polyester) does not stretch much when wet, but is too much
bother to sort out.

No special tighteners, just tautline hitches.  The plastic tighteners are
too fussy for me and do not give as much tension as double-hauling on a
tautline hitch.

--
Dave Kruger
Astoria, OR

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From: Michael Daly <michaeldaly_at_rogers.com>
subject: Re: [Paddlewise] Tarps
Date: Thu, 9 Jan 2003 15:40:52 -0500
From: "Evan Dallas" <Evan_Dallas_at_notes.ntrs.com>

Good advice, Evan!

> Also, note that a strong wind
> can impose *very* strong loads on the tarp.  For that reason, I always use
> at least 1/4 inch rope for my ridge line.

For those who've read Colin Fletcher's "The Complete Walker" will know 
of the trick of only tying down three corners of a tarp and tying the 
fourth corner to a relatively light rock.  That way, the wind energy is 
spent by lifting and dropping the rock.  The trick is finding the right 
weight of rock (or piece of wood etc).  Too heavy and it just sits there 
(stressing the tarp); too light and the tarp snaps like crazy.

I frequently use this technique on my tarp if I'm in a windy, exposed 
area.  When kayaking, that's often.  I also will do this if the tarp is 
up overnight and I don't want to awaken to find the wind has picked up
and is rattling the tarp to pieces.

Mike


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