Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!sun-barr!olivea!samsung!know!tegra!vail
From: vail@tegra.COM (Johnathan Vail)
Newsgroups: sci.space
Subject: Re: Kevlar (was:  Manoeuvring using rope and anchor)
Message-ID: <2057@atlas.tegra.COM>
Date: 11 Feb 91 20:46:53 GMT
References: <4728@mindlink.UUCP> <6117@idunno.Princeton.EDU>
Organization: Tegra-Varityper, Inc., Billerica, MA
Lines: 39
In-reply-to: marty@puppsr.Princeton.EDU's message of 9 Feb 91 15:26:12 GMT



In article <6117@idunno.Princeton.EDU> marty@puppsr.Princeton.EDU (Marty Ryba) writes:

   In article <4728@mindlink.UUCP>, Bruce_Dunn@mindlink.UUCP (Bruce Dunn) writes:
   |>   Kevlar is fascinating stuff.  I just acquired a spool of Kevlar fiber for
   |> tinkering purposes.  It looks like pale yellow dental floss, or like polyester
   |> sewing thread.  The spool that I have is loaded with a strand that has two
   |> individual thread-like fiber bundles twisted around each other.  The thread is
   Kevlar is fascinating stuff.  It doesn't have to be yellow; I've seen it white
   too.
   |>    The Kevlar I bought was obtained from the Canadian distributor for Edmond
   |> Scientific.  In the Edmond catalog, the item is catalog number G34,883.
   |> Price is $13.50 U.S. for a 600 yard spool.
   Though the price doesn't sound too bad, for convenience and maybe a better
   price, plus for stuff that is really optimized for tensile strength with
   high flexibility and minimal abrasiveness (needed for making cables that
   last), go to any good archery shop.  There are several brands of Kevlar
   on the market; one was called "Super Flight" or something like that was
   twice as strong per weight than standard Kevlar, and lasted longer since one
   needed fewer strands per cable and it was less abrasive.  Remember, the lighter
   the string, the faster the arrow will go.  Archery involves some high-tech
   materials science and physics besides being plain fun.

Should this thread go somewhere else?

Anyway, kite shops sell "300 pound" kevlar string.  It is yellowy,
braided I think, and quite strong.  Just the thing for flying a couple
of 10' stunters in a hurricane...

jv


Law of Stolen Flight: Only flame, and things with wings.
                      All the rest suffer stings.
 _____
|     | Johnathan Vail | n1dxg@tegra.com
|Tegra| (508) 663-7435 | N1DXG@448.625-(WorldNet)
 -----  jv@n1dxg.ampr.org {...sun!sunne ..uunet}!tegra!vail