PaddleWise by thread

From: Colin Calder <c.j.calder_at_abdn.ac.uk>
subject: [Paddlewise] How Windy Was It (Really)?
Date: Fri, 16 Oct 1998 15:47:52 +0100
Chris Wein wrote:

> C'mon gearheads!
>
> Get a hand-held anemometer. They run from US$25 - US$165.
> Try Edmund Scientific Catalog for the largest selection.
>
> -chris

Attention gearheads, save US$25 - $165:

All you need is a ping pong ball, a piece of thread one foot long, and a
protractor

Thread the ping pong ball onto thread and hold up in the wind.

Wind speed in ms-1 = 8.1 * sqrt(tan(angle of thread))
Wind speed in mph = 18 * sqrt(tan(angle of thread))

So next time you want to know the wind speed simply:
	1. Raft up, attach airspoons, or stand up in your klepper (delete as
appropriate) 	2. Duck tape the thread and the protractor onto the end of
your  greenland style paddle, and hold it up into the wind.
	Hey presto!!!!! Never overestimate the wind speed you managed to paddle
against again!!!!!!!!

Who says you don't get useful information on paddlewise :-)

Cheers
Colin Calder
57º19'N  2º10'W

PS - For an extra sophisticated instrument, build a spirit level into the
protractor, or have your native paddle carver incorporate one into your
paddle looms.

PPS - For a super extra deluxe sohpisticated instrument, as above but also
have your native paddle carver engrave the protractor scale directly onto
your paddle and add a recessed hook for the thread.

PPS - ALWAYS use an authentic native greenland style paddle or storm paddle.
Under *** NO *** circumstances try this with a Western style paddle - the
teeth of the wind will simply whip the paddle from your hands and laugh in
your face.

PPPS - Always keep your tongue firmly in your cheek and out or your wise ass

PPPPS - There is a actually a plan out there on the net somewhere (on a kite
flyers site) for an anemometer made with a ping pong ball, thread, and a
card/plywood protractor marked in the beaufort scale.  If anyone is
interested I'll see if I can find the site.

______________________________________________________________________
Dr Colin Calder
Centre for CBL in Land Use and Environmental Sciences (CLUES)
MacRobert Building, Aberdeen University, Aberdeen, AB24 5UA, UK
c.j.calder_at_abdn.ac.uk  Tel: (+44) 01224 273768 Fax: (+44) 01224 273752
CLUES WWW: http://www.clues.abdn.ac.uk:8080/
______________________________________________________________________

***************************************************************************
PaddleWise Paddling Mailing List
Submissions:     paddlewise_at_lists.intelenet.net
Subscriptions:   paddlewise-request_at_lists.intelenet.net
Website:         http://www.gasp-seakayak.net/paddlewise/
***************************************************************************
From: Sisler, Clyde <Clyde.Sisler_at_wang.com>
subject: RE: [Paddlewise] How Windy Was It (Really)?
Date: Thu, 15 Oct 1998 08:58:58 -0400
So let's hear it, you young, strong paddlers ... was that *really* a 20
knot head wind?  What was the sea state like?

> Ain't no young, strong paddlers here.  Just us old folks.

> When kayaking my rule of thumb(s) is/are (1) if I feel a nice breeze on my
face it must be blowing 5 knots (2) when I start cussing it's blowing 10
knots, (3) when I stop cussing it's blowing 15 knots (4) when I'm paddling
like hell and not going anywhere it's blowing 20 knots (5) when I'm paddling
like hell and still going backwards it's blowing 25 knots (6) if I'm up in
the trees its blowing more than 25 knots

> I don't think I can paddle a canoe against a 15 knot wind, like on my last
canoe trip, and make much progress for any real distance.  I had a half mile
crossing to make against what I thought was a 15 knot wind and figured it
would take at least half an hour.
***************************************************************************
PaddleWise Paddling Mailing List
Submissions:     paddlewise_at_lists.intelenet.net
Subscriptions:   paddlewise-request_at_lists.intelenet.net
Website:         http://www.gasp-seakayak.net/paddlewise/
***************************************************************************
From: <rdiaz_at_ix.netcom.com>
subject: Re: [Paddlewise] How Windy Was It (Really)?
Date: Thu, 15 Oct 1998 10:56:32 -0700
There is a saying I heard early on in gettting into kayaking.

The height of the waves, the strength of the wind, increases in direct
proportion to the time elapsed since the trip or incident.

However, having said that, I do know that I have made 2.5 mile headway
per hour against 20 knot winds for two hours or so.  I knew the winds
were that because of forecasts and later followup of conditions.

I learned from some pretty good wind punchers that the important thing
to do is to get real determined and angry, get yourself solidly braced
in your boat and paddle like hell.  What seems to happen is that you
punch through or get enough momentum that start moving you pretty
effectively, whereas just normal paddling will get you no where. 
Overall it is important to get quite pissed off at the wind or think of
someone or something you have a dislike for to get you in the proper
angry mood.

ralph
-- 
-----------------------------------------------------------------------
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."
-----------------------------------------------------------------------


***************************************************************************
PaddleWise Paddling Mailing List
Submissions:     paddlewise_at_lists.intelenet.net
Subscriptions:   paddlewise-request_at_lists.intelenet.net
Website:         http://www.gasp-seakayak.net/paddlewise/
***************************************************************************
From: Mel Grindol <grindol_at_my-dejanews.com>
subject: Re: [Paddlewise] How Windy Was It (Really)?
Date: Thu, 15 Oct 1998 06:15:12 -0700
On Thu, 15 Oct 1998 04:54:10   Dave Kruger wrote:
>
>So let's hear it, you young, strong paddlers ... was that *really* a 20
>knot head wind?  What was the sea state like?
> 
Dave,

   Since my wife and I just started paddling this year we have limited experience.  But we did take a float trip down a section of the Kansas river a few weeks ago in strong winds.  The weather forecast for the day was 25-30 mph winds from the south.  Luckily most of the trip was heading east so that you could paddle along the south bank under the shelter of the bank and trees.

   But...there was one stretch of the river that turned and headed straight into the wind for about 2 miles.  They called it "the wind tunnel".  The wind was strong enough that it was blowing large dust clouds off of the sand bars (I'm talking fast moving stinging sand).  Since the fetch was short the waves were only about 1 (possibly as high as 2) feet high.  Some of the waves would have small whitecaps and spray.

   After my wife got plowed by an out of control canoe (there was about 60 canoes in the trip) we decided to sprint ahead of the canoes (admittedly most of them were novices in rented canoes (you know, take the 5-10 year old kids out for a fun day on the river like they did when they were in boy scouts as kids)).  At one point as a test I stopped paddling, hunkered down over the deck to see if the 8 mph current could out do the wind.  The wind won, noticeably.

   It did take quite a bit of effort (enough that I'm glad I only had to paddle against the wind for a short section).  A bunch of the canoers ended up walking their canoes through that stretch instead of paddling.  A noticeable exception was these two guys in a nice looking Old Town.  They talked about paddling every year in the BWCAW and were very good paddlers.

   I would definitely say that was the forecasted 25-30 mph wind but I did not paddle 10 miles into it, just 2.

Mel
---
There are three types of people, those who can count and those who can't.



-----== Sent via Deja News, The Discussion Network ==-----
http://www.dejanews.com/  Easy access to 50,000+ discussion forums
***************************************************************************
PaddleWise Paddling Mailing List
Submissions:     paddlewise_at_lists.intelenet.net
Subscriptions:   paddlewise-request_at_lists.intelenet.net
Website:         http://www.gasp-seakayak.net/paddlewise/
***************************************************************************
From: <dianem_at_sd61.bc.ca>
subject: Re: [Paddlewise] How Windy Was It (Really)?
Date: Thu, 15 Oct 1998 07:19:17 -0700
> Once I paddled **one mile** against Force 8
>(35 - 40 knots) -- took me 2.5 hours of *very hard,* constant effort,
>and I was completely bushed at the end.
>
>So let's hear it, you young, strong paddlers ... was that *really* a 20
>knot head wind?  What was the sea state like?
>
>--
>Dave Kruger
>Astoria, OR
>--
>Beating the drum for old age and treachery.

Hi Dave,

I paddled home about the same distance this summer off Oak Bay Marina -
posted it to the list; maybe you were in Haida Gwaii - in a terrific
headwind, gusting to 45 knots.  I know because soon after we got to land,
after paddling for a very long time with inches of progress per minute it
seemed, I called the Environment Canada weather report station for reports
on Discovery and Trial Islands, which is where we were.

I'm not young (52) but I'm relatively strong "for my age" ;) , and
desperation and determination combined this time to give  hi-test fuel. I
did not want to go over and have my companion have to try to assist in
righting me, or stabilising the boat (my Arluk 1.8)  while I made a wet
exit re entry.

It seemed to me the sea state could best be described as 'variable'; with
the gusts I really did not know what to expect, except more of it. Wind was
slamming from all over it seemed and the water was mainly being flattened
out by downward pressure, as I recall.

We were close to land really but everyone else (sail and power)  had gone
in or were concentrating on getting in or trying to anchor.

Diane, picking up her drum and joining in


***************************************************************************
PaddleWise Paddling Mailing List
Submissions:     paddlewise_at_lists.intelenet.net
Subscriptions:   paddlewise-request_at_lists.intelenet.net
Website:         http://www.gasp-seakayak.net/paddlewise/
***************************************************************************
From: Dave Kruger <dkruger_at_pacifier.com>
subject: Re: [Paddlewise] How Windy Was It (Really)?
Date: Thu, 15 Oct 1998 18:50:21 -0700
dianem_at_sd61.bc.ca wrote:

> I paddled home about the same distance (a mile) this summer off Oak Bay Marina -
> [snip] in a terrific
> headwind, gusting to 45 knots.  I know because soon after we got to land,
> after paddling for a very long time with inches of progress per minute it
> seemed, I called the Environment Canada weather report station for reports
> on Discovery and Trial Islands, which is where we were.

Diane knows her area pretty well, so her use of EnviroCanada data from
islands near her route is probably a good indicator of the actual
winds.  Others have suggested that *forecasts* are good for "measuring"
wind.  I don't think so.  The microenvironments in which we paddle are
frequently different from the "overall" wind regime which forecasts key
on.  Where I live, the forecasts are notoriously poor.  Could be better,
elsewhere, I guess.

> It seemed to me the sea state could best be described as 'variable'; with
> the gusts I really did not know what to expect, except more of it. Wind was
> slamming from all over it seemed and the water was mainly being flattened
> out by downward pressure, as I recall.

This is common in very high wind situations, I believe.  I have
experienced the same thing in 35 knot blows.  In fact, I think at 40
knots I can not maintain, even.  At 30, I know I can make headway.  The
one time I had to paddle into such a wind, my headway, with about the
same paddling effort, was governed completely by the wind force.  When a
gust came through, I went backwards.  When a lull came through, I gained
ground.  I was fortunate the lulls outweighed the gusts.  For reference,
I'm a pretty strong paddler, and push can a Wind Dancer at 4 knots at
cruise all day; however, I used to be able to push it harder, but
tendonitis limits me, now.

-- 
Dave Kruger
Astoria, OR

***************************************************************************
PaddleWise Paddling Mailing List
Submissions:     paddlewise_at_lists.intelenet.net
Subscriptions:   paddlewise-request_at_lists.intelenet.net
Website:         http://www.gasp-seakayak.net/paddlewise/
***************************************************************************
From: Dan McCarty <dmccarty_at_us.ibm.com>
subject: Re: [Paddlewise] How Windy Was It (Really)?
Date: Thu, 15 Oct 1998 10:46:36 -0400
<<<<
Several postings in the last couple weeks have included claims of
paddling home "...10 miles against a 20 knot head wind ..." or similar.
(At least one of these was made by a paddler soloing a canoe!)  I wonder
about those 20 knot head winds.  Was it really that windy?  Here are the
reasons for my skepticism.

1. It's darn tough to make much headway against a 20 knot head wind.
John Dowd, in his tome "Sea Kayaking" (p. 139 of the 3rd edition)
details his estimates of headway possible against wind:

Head Wind (knots)       Kayak Speed (knots)

10 - 15                  2.50 - 2.25
15 - 20                  2.25 - 1.50
20 - 30                  1.50 - 0.75

So let's hear it, you young, strong paddlers ... was that *really* a 20
knot head wind?  What was the sea state like?

<<<<

Well, as a young paddler of 34, I think Dowd's numbers are pretty good.  My
wife and I were at the North Carolina coast early in September and for most of
the time we were there the wind was in the 20-30 knot range.  Small craft
advisories according to the weather radio.  We were paddling on the sound off
of Topsail Island and not the on the ocean so we were protected from large wind
driven waves for the most part.  My SO is not as strong of a paddler as I am
but  she insisted on going with me one day when it was very windy.  The wind
was from the south and we paddled the first half of the day trip so that the
wind
was at our back, i.e., we went north, then crossed through some channels in the
marsh to get to the Intercoastal Waterway.  We went north for a mile or so and
decided to turn back.  It took us a good hour to make that mile against the
wind.  I could have made it much quicker but the SO just did not have the
strength to paddle fast into that headwind.  With some gusts she was actually
moving backwards!  Going through the marsh was not against the wind and the
marsh grass offered protection.  There was another open stretch of water of
about a mile in length that we had to cross and it to took about an hour.  I
was using a GPS to measure our speed and distances.

I have paddled in winds like this before, not on the ocean but on large lakes
in North Carolina.  When wind is in this range paddling is very interesting.  I
have found it is best to go into a low paddle and save your energy for the
lulls in the wind.  Fighting the wind is foolish.  You just have to make the
best speed as possible.  Its like running or hiking up a large hill without
killing yourself.  You have to keep the effort the equal to what you were
running/hiking prior to the hill by lowering the speed you are moving.  If you
try to maintain the same speed your effort goes way up and the hill/wind is
going to win....

I have been meaning to write up a trip report about some of this because I
think some interesting conversations would occur....  Well, it's almost winter
so we need something to talk about...

Feathered/Unfeathered Paddles:
Has anyone paddled into 20-30+ knot winds with a feathered paddle?  I paddle
unfeathered but I think when the winds are in this range the only thing one can
do is make headway.  Your body in the wind is just such a huge sail that the
paddle configuration is the least of your concerns....  Would an feathered
paddle make a difference?

Boat Design:
What is severe weather cocking?  At what wind speed does it appear?

Rudders/Skegs:
How do rudderless and skegless kayaks handle high wind and steep waves to
prevent severe weather cocking and broaching?  Won't ALL kayaks eventually
broach to the wind and the waves?  At what wind speed is this "acceptable"?

Canadian Ballast Rocks:
How many of them do I need to help with the problems listed above?

Later...
Dan McCarty
***************************************************************************
PaddleWise Paddling Mailing List
Submissions:     paddlewise_at_lists.intelenet.net
Subscriptions:   paddlewise-request_at_lists.intelenet.net
Website:         http://www.gasp-seakayak.net/paddlewise/
***************************************************************************
From: Barbara Kossy <bkossy_at_igc.apc.org>
subject: Re: [Paddlewise] How Windy Was It (Really)?
Date: Thu, 15 Oct 1998 10:09:25 -0700 (PDT)
At 10:46 AM 10/15/98 -0400, Dan McCarty wrote:
><<<<
>Several postings in the last couple weeks have included claims of
>paddling home "...10 miles against a 20 knot head wind ..." or similar.
>(At least one of these was made by a paddler soloing a canoe!)  I wonder
>about those 20 knot head winds.  Was it really that windy?  Here are the
>reasons for my skepticism.

One windy day a group of stubborn paddlers from Bay Area Sea Kayakers
paddled the 6 miles of Estero Americano into  what I estimated to be a 20
knot wind to the ocean. There were stonger gusts, and occasionally we were
protected from the wind by the bends in the estero. We would paddle hard for
about 15 minutes then run into a bank and jab our paddles into the mud  to
anchor the kayaks against the wind, and pant and laugh about how crazy we
were. Then we would continue, knowing that at any time it would be very easy
to turn back. At one point I thought it was nuts to paddle when it looked
like I could more easily walk the bank. I think I was befuddled by the
effort. So I put one foot out of the kayak to attempt to stand on the mud
bank and sank up to my knee. Then the kayak started blowing backwards and I
was almost split in two.  I managed to pull my leg back into the boat. Then
I retrieved my bootie from the sucking mud hole. Turns out even paddling
against the wind was easier than walking, which was impossible.  I don't
know how long the trip to the ocean took, but we rested a lot, and laughed a
lot. When we finally got to the beach at the mouth it was windy and cold but
we cooked a fish (store bought) on a fire, drank hot tea, jumped around to
keep warm and then paddled back.  The 6 winding miles to the cars was a lot
easier.

Barbara
Richmond, California
* -- * -- * -- * -- * -- * -- * -- * --*--*--
        Barbara Kossy Communications
  voice: 510-234-3479 fax: 510-234-6615
* -- * -- * -- * -- * -- * -- * -- * -- *--* --

***************************************************************************
PaddleWise Paddling Mailing List
Submissions:     paddlewise_at_lists.intelenet.net
Subscriptions:   paddlewise-request_at_lists.intelenet.net
Website:         http://www.gasp-seakayak.net/paddlewise/
***************************************************************************
From: Barbara Kossy <bkossy_at_igc.apc.org>
subject: Re: [Paddlewise] How Windy Was It (Really)?
Date: Thu, 15 Oct 1998 10:09:28 -0700 (PDT)
At 10:56 AM 10/15/98 -0700, rdiaz_at_ix.netcom.com wrote:
>There is a saying I heard early on in gettting into kayaking.
>
>The height of the waves, the strength of the wind, increases in direct
>proportion to the time elapsed since the trip or incident.
>
Here's one of my sayings,
"Where windsurfers play, kayakers away."
Barbara

* -- * -- * -- * -- * -- * -- * -- * --*--*--
        Barbara Kossy Communications
  voice: 510-234-3479 fax: 510-234-6615
* -- * -- * -- * -- * -- * -- * -- * -- *--* --

***************************************************************************
PaddleWise Paddling Mailing List
Submissions:     paddlewise_at_lists.intelenet.net
Subscriptions:   paddlewise-request_at_lists.intelenet.net
Website:         http://www.gasp-seakayak.net/paddlewise/
***************************************************************************
From: Larry Mills <millsl_at_purchase.edu>
subject: RE: [Paddlewise] How Windy Was It (Really)?
Date: Thu, 15 Oct 1998 13:08:02 -0000
Perhaps that anger should be directed at the person(s)
who stole the ballast rocks.

-----Original Message-----
From:	rdiaz_at_ix.netcom.com [SMTP:rdiaz_at_ix.netcom.com]
Sent:	Thursday, October 15, 1998 5:57 PM
To:	paddlewise_at_lists.intelenet.net
Subject:	Re: [Paddlewise] How Windy Was It (Really)?

There is a saying I heard early on in gettting into kayaking.

The height of the waves, the strength of the wind, increases in direct
proportion to the time elapsed since the trip or incident.

However, having said that, I do know that I have made 2.5 mile headway
per hour against 20 knot winds for two hours or so.  I knew the winds
were that because of forecasts and later followup of conditions.

I learned from some pretty good wind punchers that the important thing
to do is to get real determined and angry, get yourself solidly braced
in your boat and paddle like hell.  What seems to happen is that you
punch through or get enough momentum that start moving you pretty
effectively, whereas just normal paddling will get you no where. 
Overall it is important to get quite pissed off at the wind or think of
someone or something you have a dislike for to get you in the proper
angry mood.

ralph
-- 
-----------------------------------------------------------------------
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."
-----------------------------------------------------------------------


***************************************************************************
PaddleWise Paddling Mailing List
Submissions:     paddlewise_at_lists.intelenet.net
Subscriptions:   paddlewise-request_at_lists.intelenet.net
Website:         http://www.gasp-seakayak.net/paddlewise/
***************************************************************************

***************************************************************************
PaddleWise Paddling Mailing List
Submissions:     paddlewise_at_lists.intelenet.net
Subscriptions:   paddlewise-request_at_lists.intelenet.net
Website:         http://www.gasp-seakayak.net/paddlewise/
***************************************************************************
From: Del <oldmaint_at_SLCSL.StLawrenceC.on.ca>
subject: Re: [Paddlewise] How Windy Was It (Really)?
Date: Thu, 15 Oct 1998 13:54:23 -0400
-----Original Message-----
From: rdiaz_at_ix.netcom.com <rdiaz_at_ix.netcom.com>
To: paddlewise_at_lists.intelenet.net <paddlewise_at_lists.intelenet.net>
Date: Thursday, October 15, 1998 1:14 PM
Subject: Re: [Paddlewise] How Windy Was It (Really)?


I can't say exactly how far or fast I have paddled in strong head winds but
thought I would share this experience.  I was paddling up the Rideau Canal
(Ontario, Canada) on my first extended trip.  About 2 in the afternoon I had
just cleared a set of locks and had one small (I believe Sand Lake) lake to
cross to reach my planned camping spot.  The winds shifted from a really
super tail wind to
directly head-on and increased to 35 KM per hour.  Since this was a small
lake I foolishly (considering my experience and skill level) left a spot
with perfectly good camping and headed across keeping near shore where
possible.  When I got to the locks on the other side I got talking to a chap
in a cruiser.  He said he almost went back for me when, as he passed me, his
young daughter said "Look daddy, that man is paddling backwards".

***************************************************************************
PaddleWise Paddling Mailing List
Submissions:     paddlewise_at_lists.intelenet.net
Subscriptions:   paddlewise-request_at_lists.intelenet.net
Website:         http://www.gasp-seakayak.net/paddlewise/
***************************************************************************
From: Bob Apter <bapter_at_sos.net>
subject: Re: [Paddlewise] How Windy Was It (Really)?
Date: Thu, 15 Oct 1998 23:38:56 -0700
The San Juan Challenge, a 2-day, 40-mile sea kayak race from Anacortes to
Rosario Resort on Orcas Island, in the San Juan Islands of Washington state,
had a very windy second day for its inaugural run (April 19 and 20, 1997).

On that second day, the official weather station at Smith Island reported
winds of 25-29 knots with a peak of 45 knots.  The wind was from the
Southwest, generally from the side or slightly behind the overall direction
of the course, but there were areas where it was directly in the face of the
racers.  The fetch varied, but was up to 30 miles in the most exposed areas.

The seas were as large as 8 feet in the Bellingham Channel tide rip.  This
was based on a reliable report from a safety boat skipper that he was
standing on the deck of his power boat and couldn't see over some of the
tops.  Even in that tide rip most of the waves were smaller, and in most
sections of the course the waves were 3-4 feet.  45 racers started and 33
finished, with most of the rescues being in Obstruction Pass, where a strong
current against the wind generated 5-6 foot waves.  Obstruction Pass was
early in the course, and triaged out most of the paddlers who couldn't
handle rough conditions.

Olympic gold medalist Greg Barton won the race, paddling his very tippy
Black Marlin (it has a 14" water line), using a feathered wing paddle, with
a total 2-day time of 5 hours, 11 minutes, for 40.3 miles!

This coming year, the race will be run May 15 and 16, as part of the
Anacortes Waterfront Festival.  The 1997 weather was unusual for April, and
May tends to be quite a bit better.  The start and finish lines will be
right in the middle of the staging area of the Festival, which draws crowds
of 25-30,000.

Hope to see many of you there!

Bob Apter
-----Original Message-----
From: Dave Kruger <dkruger_at_pacifier.com>
To: PaddleWise <PaddleWise_at_lists.intelenet.net>
Date: Thursday, October 15, 1998 4:52 AM
Subject: [Paddlewise] How Windy Was It (Really)?


>Several postings in the last couple weeks have included claims of
>paddling home "...10 miles against a 20 knot head wind ..." or similar.
>(At least one of these was made by a paddler soloing a canoe!)  I wonder
>about those 20 knot head winds.  Was it really that windy?  Here are the
>reasons for my skepticism.
>
>1. It's darn tough to make much headway against a 20 knot head wind.


***************************************************************************
PaddleWise Paddling Mailing List
Submissions:     paddlewise_at_lists.intelenet.net
Subscriptions:   paddlewise-request_at_lists.intelenet.net
Website:         http://www.gasp-seakayak.net/paddlewise/
***************************************************************************
From: Larry Snow <larry.snow_at_deltec.com>
subject: RE: [Paddlewise] How Windy Was It (Really)?
Date: Fri, 16 Oct 1998 13:16:29 -0500
Obviously you also need a slide rule.  (Not a calculator with electronic
parts that could fail in a marine environment).  They should be pretty cheap
at garage sales.

Larry 

> ----------
> From: 	Kirk Olsen[SMTP:kolsen_at_imagelan.com]
> Sent: 	Friday, October 16, 1998 12:58 PM
> To: 	Colin Calder
> Cc: 	paddlewise
> Subject: 	RE: [Paddlewise] How Windy Was It (Really)?
> 
> On Fri, 16 Oct 1998, Colin Calder wrote:
> 
> > All you need is a ping pong ball, a piece of thread one foot long, and a
> > protractor
> > 
> > Wind speed in ms-1 = 8.1 * sqrt(tan(angle of thread))
> > Wind speed in mph = 18 * sqrt(tan(angle of thread))
> 
> You can do sqrt(tan(angle of thread)) in your head?
> 
> I'm not worthy....
> 
***************************************************************************
PaddleWise Paddling Mailing List
Submissions:     paddlewise_at_lists.intelenet.net
Subscriptions:   paddlewise-request_at_lists.intelenet.net
Website:         http://www.gasp-seakayak.net/paddlewise/
***************************************************************************
From: Mark Zen <canoeist_at_netbox.com>
subject: RE: [Paddlewise] How Windy Was It (Really)?
Date: Fri, 16 Oct 1998 13:01:44 -0600 (MDT)
On Fri, 16 Oct 1998, Kirk Olsen wrote:

> On Fri, 16 Oct 1998, Colin Calder wrote:
> 
> > All you need is a ping pong ball, a piece of thread one foot long, and a
> > protractor
> > 
> > Wind speed in ms-1 = 8.1 * sqrt(tan(angle of thread))
> > Wind speed in mph = 18 * sqrt(tan(angle of thread))
> 
> You can do sqrt(tan(angle of thread)) in your head?
> 
> I'm not worthy....

i could do the sqrt in my head, and it would probably keep my mind
off the wind in the first place... but i have forgotten far more 
trigonometry than i ever learned ;-) and can't even remember how
to figure tangent... the 18 * wouldn't be easy, though i'd just use 20!!
i think i could guess as accurately as my math in my head!!

bottom line, hanging my head down, i'm not worthy either...

#------canoeist[at]netbox[dot]com----http://www.diac.com/~zen/mark ----
#
mark zen                      o,    o__              o_/|   o_.
po box 474                   </     [\/              [\_|   [\_\
ft. lupton, co 80621-0474 (`-/-------/----')      (`----|-------\-')
#~~~~~~~~~~~~~~~~~~~~~~~~~~~_at_~~~~~~~_at_~~~~~~~~~~~~~~~~~~~_at_~~~~~~~~_at_~~~~~
http://www.diac.com/~zen/paddler  [index to club websites i administer]

Rocky Mtn Sea Kayak Club, Colorado River Flows, Poudre Paddlers
The Colorado Paddlers' Resource, Rocky Mtn Canoe Club Trip Page 
--
Fortune:
"In a world without fences, who needs 'Gates'"
   -- Scott McNealy

"In a world without walls, who needs 'Windows'"
   -- Dave Livigni

***************************************************************************
PaddleWise Paddling Mailing List
Submissions:     paddlewise_at_lists.intelenet.net
Subscriptions:   paddlewise-request_at_lists.intelenet.net
Website:         http://www.gasp-seakayak.net/paddlewise/
***************************************************************************

This archive was generated by hypermail 2.4.0 : Thu Aug 21 2025 - 16:32:52 PDT