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From: Bill Leonhardt <WJLeonhardt_at_bnl.gov>
subject: Re: [Paddlewise] Knee Tubes
Date: Mon, 30 Apr 2001 16:06:22 -0400
At 02:00 PM 4/30/01 -0400, Rick Sylvia wrote:
SNIP


>I'm installing it in a plastic boat.  Since I can't glass it in place, I
>thought I'd forego earlier suggestions to velco it in, and opt for using a
>couple of galvanized pipe straps and securing it with SS bolts and Capnuts.
>The bolt heads will be pretty low-profile on the deck under the rigging,
>with rounded heads so as not to "catch" on any gear.  Inside the cockpit,
>I'll size the length of the bolts so that the Capnut is tight against the
>strap.  If anything is going to get in the way (generally speaking), it will
>be the tube itself, not the capnuts.
>
 Rick,

Maybe it's just my personal preference, but I would NOT even utter the word
"galvanized" near my boat.  I've had good luck using nylon cable ties.
It's probably best to use the UV resistant ones.

On my glass boat, I use cable tie pads that epoxy in place.  You buy the
ties, pads and epoxy in a little kit and the epoxy sticks really well.
(Actually, I had one failure out of seven pads, from, I think, bad surface
prep.)  For a PE boat, you can get the pads that mount with a thru-screw
and use your low profile/cap nut approach.

I use these cable tie/ pad installations inside my hatches for gear
tie-down points and to secure a couple of light bungees to store my hand
pump where you intend to put the knee tube.  Some day I might do the knee
tube as well.

Regarding your cap nut approach, I have done something a little different
on a couple of PE boats I have.  I used this technique to secure the loops
that hold the deck bungees.  I use nylon flat head machine screws (passing
thru the bungee loops and then the deck) and stainless steel nuts on the
inside.  When the assemblies are made and the screws are tight, I trim the
screws with an electric soldering iron or wood burning pen.  It allows a
"low profile" trim and, if you work it right, you can smoosh the screw end
over (kinda like peening) to lock it in place.

Naturally, you should experiment "off boat" first.

Good luck,

Bill Leonhardt
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