Message-Id: <1.5.4.32.19990523165950.00686078@tscnet.com>
Date: Sun, 23 May 1999 09:59:50 -0700
To: baidarka@lists.intelenet.net
From: stephen <syahn@tscnet.com>
Subject: Re: baidarka H-22 Hypalon application
I believe that the ultimate tensile strength is high compared to other
common plastics in this price range,like dacron. but only a little. Dacron
seems better to me when you look at the engineering specs. I wonder why
nylon is used too. Maybe because of its use in rafts and zodiacs where the
stretch and strength is ok.
Steve Yahn
At 07:26 PM 5/23/99 -0700, you wrote:
>Aw, jeez -- I'm replyin' to myself!
>
>When you talk to yourself, it's supposed to be a bad sign, but to e-mail
>yourself.....?
>
>So, it's been three days, and no reply. But it wasn't meant to be a
>rhetorical question...
>
>Why use nylon?
>
>What advantages does it have over other synthetics? It does absorb water
>and stretch... Does it have other positive characteristics that say, dacron
>doesn't have?
>
>C'mon people!
>
>Waiting in Kelowna, where landscaping is nowhere near as much fun as
>building a 'yak.
>
>-----Original Message-----
>From: Michael O'Flynn <moflynn@sd23.bc.ca>
>To: baidarka@lists.intelenet.net <baidarka@lists.intelenet.net>
>Date: Thursday, May 20, 1999 7:53 PM
>Subject: Re: baidarka H-22 Hypalon application
>
>
>>I've got to agree with Bill Low on this one. I used the (lightweight!)
>>dacron (Ceconite - 2.7 oz). It's used in aviation, where I'm sure wrinkles
>>would cause the planes to flap down out of the sky unexpectedly.
>>
>>I know many of the list adherents go for 20 oz. plus stuff, but this stuff
>>seems very tough to me. I don't know if it's as tough as nylon, but now I
>>know that heavier dacron is available. It heat-shrinks easily, and I
>>haven't seen it do anything when the weather is humid. Not that it gets
>>really humid in Kelowna, but it has yet to wrinkle.
>>
>>Why use nylon if it causes this kind of trouble?
>>-----Original Message-----
>>From: Chris & Ellen Kohut <chriskayak@earthlink.net>
>>To: baidarka@lists.intelenet.net <baidarka@lists.intelenet.net>
>>Date: Thursday, May 20, 1999 7:07 PM
>>Subject: Re: baidarka H-22 Hypalon application
>>
>>
>>>All is not lost!
>>>
>>> I've had the same happen to me on my last boat.
>>>
>>> We had some problems on the nose piece canting to one side
>>> during the ironing process, so time had to be taken away
>>> from ironing, and the bow unlaced, and nose piece straightened.
>>> The upshot was the boat didn't get sufficiently ironed, although
>>> it looked like it was after the application of the first coat of
>>> Dura-Tuff.
>>>
>>> The surprise came day two after the application of the
>>> first coat.
>>>
>>> I'm not talkin' here about a few barely noticeable
>>> wrinkles, I'm talkin' about THE WHOLE BOAT LOOKED LIKE A
>>> PALM BEACH MATRON EMERGING FROM LIPOSUCTION!!!
>>>
>>> Out of desperation, I took a heat gun to it (if I ruin
>>> it I ruin it.......I can't paddle it in this condition), gently
>>> at first, but with some real heat.......the nylon started
>>> dancing about in the general area of the heat......and then
>>> snapped into place tight as a drum once again. It took a bit
>>> of doing and time, but once the hull and deck were done, I
>>> slapped another coat on.
>>>
>>> Next morning (also humid), same story. Frustrating,
>>> no? Same deal. Heat.....dancing about like a thing
>>> possessed, and then eventual drum tightness.
>>>
>>> Had to do it three times. There is still a bit of a
>>> barely noticeable ripple in a couple of places on a very
>>> humid day....but as the humidity burns off the wrinkles
>>> disappear.
>>>
>>> Perhaps it would help to mention the type of heat gun
>>> I used. Stock paint stripping gun from Wal-Mart, duel temp.
>>> about 1000 degrees (whew....), work the gun always moving in a
>>> circular motion about 4 inches from the surface, bring it closer
>>> as you gain confidence.....it'll be all right.
>>>
>>> Chris
>>
>
>