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From: PeterO <rebyl_kayak_at_iprimus.com.au>
subject: [Paddlewise] Kahuna Knee Brace/Pad
Date: Tue, 10 Aug 2004 19:41:58 +1000
G'Day Paddlewise,

In response to my limerick a couple of people enquired back channel why I
couldn't roll the Kahuna. Heres the problem. The front rib in the cockpit
digs painfully into my knees. I've asked Feathercraft and their agents
whether they can supply a pad or something that could work as a knee brace.
When they said they could they wound up sending me a hip pad, I offered to
hang on to the hip pad but asked again if they could sell me a proper knee
brace - haven't heard from them since.

Does anyone know if Feathercraft make a knee brace for the Kahuna?

I'm going to have a shot at making my own but don't have a workshop any
more.

All the best, PeterO
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From: Dave Kruger <kdruger_at_pacifier.com>
subject: Re: [Paddlewise] Kahuna Knee Brace/Pad
Date: Tue, 10 Aug 2004 03:43:56 -0700
PeterO,

I have had some success with minicell foam thigh pads underdeck on my Folbot
Kodiak, which has a frame crossmember that whacks my knee/lower thigh area
pretty bad.  The thigh pads build out the underdeck area, transferring the
thigh/knee pressure and spreading it out.  I contact cemented fuzzy Velcro to
the underside of the deck and likewise attached hook Velcro to the minicell
pads so compact folding of the skin is retained.

I'll send some photos if you like

--
Dave Kruger
Astoria, OR

----- Original Message ----- 
From: "PeterO" <rebyl_kayak_at_iprimus.com.au>


> Does anyone know if Feathercraft make a knee brace for the Kahuna?
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From: PeterO <rebyl_kayak_at_iprimus.com.au>
subject: RE: [Paddlewise] Kahuna Knee Brace/Pad
Date: Tue, 10 Aug 2004 21:26:05 +1000
Dave wrote:
> I have had some success with minicell foam thigh pads

G'Day and thanks Dave,

Velcro sounds a good way to go - I'ld really appreciate seeing the photos. I
was thinking of building up a pair of half slotted foam or rubber pads which
could hook on to the cross member but can well imagine them working loose
during paddling.

All the best, PeterO
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From: <Niilus_at_aol.com>
subject: Re: [Paddlewise] Kahuna Knee Brace/Pad
Date: Tue, 10 Aug 2004 10:10:21 EDT
In a message dated 8/10/2004 2:54:24 AM Pacific Standard Time, 
rebyl_kayak_at_iprimus.com.au writes:
In response to my limerick a couple of people enquired back channel why I
couldn't roll the Kahuna. Heres the problem. The front rib in the cockpit
digs painfully into my knees. I've asked Feathercraft and their agents
whether they can supply a pad or something that could work as a knee brace.
I taped some pipe insulation around the front rib of my Feathercraft K-Light. 
 Helps a lot, stays in place, nothing to remove or attach or interfere with 
assembly or disassembly.

Tony Niilus
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From: alex <al.m_at_3web.net>
subject: Re: [Paddlewise] Kahuna Knee Brace/Pad
Date: Tue, 10 Aug 2004 11:33:44 -0700
> Does anyone know if Feathercraft make a knee brace for the Kahuna?

No.  They make hip fit (merely bags with straps) that fits any their model,
and thigh braces for K1, but I'm not sure if it can be adapted to Kahuna.
You may ask them specifically. Picture can be seen at
http://www.ecomarine.com/equipment/buy/partsFeathercraft.jhtml --> go to the
second page. Plates sure can be used (and are sold separately), but those
tubes - I don't know. I had annoying contact with lower rib in the calf
area, and done somethign similar to T. Niilus - taped closed-cell foam
around it.  Foam glued to the under-deck, as Dave suggested, may work too.
May be glue Velcros only, and attach/detach foam pads.

PS: you message return address contained Feathercraft e-mail, when I pressed
"reply all" - good thing I've noticed that... Let's keep them in the
darkness of ignorance, modifying their boats :-)...
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From: Jim Plaia <jimplaia_at_sisna.com>
subject: RE: [Paddlewise] Kahuna Knee Brace/Pad
Date: Tue, 10 Aug 2004 15:47:39 -0600
When I bought my Kahuna from Folding Kayak Adventures in Seattle, the owner
(name escapes me, as do many things lately) was looking at fitting knee braces
from one of their larger boats into the Kahuna by drilling holes for the
braces in the rolling PE ribs rather than the standard PC ribs.  I checked
back a few weeks later and he felt that the knee braces would get in the way
of a wet exit, but I've been wondering if there was a way to take that concept
and fit something that would provide a solid point for a brace but not get in
the way for exiting.  As my mechanical skills revolve around telling someone
else what I want done and not doing it myself, I've not pursued it, but it
might work as a starting point.

Date: Tue, 10 Aug 2004 19:41:58 +1000
From: "PeterO" <rebyl_kayak_at_iprimus.com.au>
Subject: [Paddlewise] Kahuna Knee Brace/Pad

Does anyone know if Feathercraft makes a knee brace for the Kahuna?
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From: Thomas Aname <anonoffensivename_at_yahoo.com>
subject: RE: [Paddlewise] Kahuna Knee Brace/Pad
Date: Tue, 10 Aug 2004 17:15:38 -0700 (PDT)
Hey Folks,
I called and asked the good people at FC about this about 3 months ago. Apparently, the ribs on the Kahuna and the K1 are made of different materials, and the "cheaper" materials used on the kahuna ribs won't take to drilling (as is required to install the K1 knee braces). The individual mentioned they are thinking about offering the ribs in the more expensive material, but gave no indicator as to a time frame...
HTH
-Thomas

Jim Plaia <jimplaia_at_sisna.com> wrote:
When I bought my Kahuna from Folding Kayak Adventures in Seattle, the owner
(name escapes me, as do many things lately) was looking at fitting knee braces
from one of their larger boats into the Kahuna by drilling holes for the
braces in the rolling PE ribs rather than the standard PC ribs. I checked
back a few weeks later and he felt that the knee braces would get in the way
of a wet exit, but I've been wondering if there was a way to take that concept
and fit something that would provide a solid point for a brace but not get in
the way for exiting. As my mechanical skills revolve around telling someone
else what I want done and not doing it myself, I've not pursued it, but it
might work as a starting point.
New and Improved Yahoo! Mail - Send 10MB messages!
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From: Tom Yost <tom_yost_at_msn.com>
subject: Re: [Paddlewise] Kahuna Knee Brace/Pad
Date: Wed, 11 Aug 2004 16:53:14 -0600
  Thomas Wrote:
  >>I called and asked the good people at FC about this about 3 months ago.
Apparently, the ribs on the Kahuna and the K1 are made of different materials,
and the "cheaper" materials used on the kahuna ribs won't take to drilling (as
is required to install the K1 knee braces). The individual mentioned they are
thinking about offering the ribs in the more expensive material, but gave no
indicator as to  time frame...

  The Kahuna ribs are Polycarbonate plastic and the more expensive FC boats
use High Density Polyethylene ( HDPE).  The easiest solution is to make your
own replacement rib of HDPE.   Just use the Kahuna rib ( number 2) as a
pattern and trace it onto HDPE with a permanent marker and use a 5/8" forstner
bit to drill the holes.  Drilling and cutting  HDPE can be done with standard
wood bits and blades.  It's easier to work with than  plywood.

  Many plastic retailers sell HDPE and often they have scraps  they will sell
you.  1/2" works fine.  If you can't find HDPE locally, buy a large  HDPE
kitchen cutting board.

  Though the Kahuna uses polycarbonate plastic,  I priced it against an equal
size sheet of HDPE and it cost 3 times as much.  Another interesting fact
about the Kahuna is it's use of 6063 aluminum tubing vs 6061 for the " more
expensive" FC's)  6063-T832 has nearly the same tensile ( 40,000psi)  and
yield strength as 6061-T6, and more importantly is rated higher in corrosion
resistance.  Go figure !

  http://yostwerks.com/Maintenance1a.html<http://yostwerks.com/Maintenance1a.
html> - Making a cross section

  Have fun,

  Tom
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From: alex <al.m_at_3web.net>
subject: Re: [Paddlewise] Kahuna Knee Brace/Pad
Date: Wed, 11 Aug 2004 18:51:37 -0700
> the ribs on the Kahuna and the K1 are made of different materials, and the
"cheaper" materials used on the kahuna ribs won't take to drilling

Not really .  Polycarbonate ribs of Kahuna are more difficult to process
than HDPE, and material itself isn't cheaper.  If I recall it correct, they
used Polycarbonate ribs in Kahuna to decrease number of ribs and/or weight,
still preserving same structural stregth.  You could use HDPE instead - it
is widely available and strong enough for that purpose.
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From: PeterO <rebyl_kayak_at_iprimus.com.au>
subject: RE: [Paddlewise] Kahuna Knee Brace/Pad
Date: Fri, 20 Aug 2004 19:42:34 +1000
PeterO wrote: -
>a couple of people enquired back channel why I
>couldn't roll the Kahuna. Heres the problem.
>The front rib in the cockpit digs painfully into
>my knees.


G'Day

And thanks to all who replied to my enquiry on Paddlewise and back channel,
(including the Feathercraft company).

Here's a summary: -

1. Dave Kruger has a very effective looking design and supplied me the
photographs. Roughly speaking it involves four shaped minicell foam pads,
attached to the underside of the fabric deck using velcro. The velcro was
glued to the deck using solvent-based Weldwood cement. The pads 'sandwich'
the front and back of the offending rib on the port and starboard sides.

2. For a quick solution Niilus suggested taping pipe insulation around the
front rib.

3. Alex and Jim Plaia discussed adapting the K1 plate knee braces but there
was a suggestion that this could make wet exits awkward and Thomas Aname
provided a timely warning not to try drilling into the polycarbonate rib if
making such an adaptation.

4. Tom Yost suggested a method for making an HDPE rib, which could be
drilled, from a kitchen cutting board. Great Idea. Beryl is going to kill me
when she comes home :~)

And I wrote to Feathercraft and said if they ever wanted a knee brace for
their Kahuna, Paddlewise had a bunch of paddlers with some great ideas. (But
I kept the ideas secret!)

Thank you all, I'll let you know how it pans out once the weather gets a bit
warmer..

All the best, PeterO
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