Received: from hplms26.hpl.hp.com by opus.hpl.hp.com with ESMTP (1.37.109.18/15.5+ECS 3.3+HPL1.1) id AA073452041; Thu, 28 Aug 1997 11:14:01 -0700 Return-Path: <shred@netcom.com-DeleteThis> Received: from mail-out1.apple.com by hplms26.hpl.hp.com with ESMTP (1.37.109.16/15.5+ECS 3.3+HPL1.1S) id AA123532041; Thu, 28 Aug 1997 11:14:01 -0700 Received: from scv4.apple.com (A17-128-100-142.apple.com [17.128.100.142]) by mail-out1.apple.com (8.8.5/8.8.5) with ESMTP id LAA35138 for <wind_talk@opus.hpl.hp.com-DeleteThis>; Thu, 28 Aug 1997 11:11:00 -0700 Received: from [17.197.20.103] (scoted2.apple.com [17.197.20.103]) by scv4.apple.com (8.8.5/8.8.5) with SMTP id LAA10430 for <wind_talk@opus.hpl.hp.com-DeleteThis>; Thu, 28 Aug 1997 11:10:58 -0700 Message-Id: <199708281810.LAA10430@scv4.apple.com-DeleteThis> Subject: Re: More information on Windwing head caps Date: Thu, 28 Aug 97 11:10:37 -0700 X-Mailer: Claris Emailer 1.1 From: "Edward W. Scott" <shred@netcom.com-DeleteThis> To: "Wind Talk" <wind_talk@opus.hpl.hp.com-DeleteThis> Content-Type: text/plain; charset="US-ASCII"
>> The previous '96 system (which is commonly used by most other sail
>> brands) uses a strap sewn to the front of the sleeve which was inserted
>> through the head cap and secured/terminated by the cinch buckle. Should
>> abrasion cause failure of this strap or the stitching, a sail repair was
>> required to replace the strap into sleeve's front.
Which is what happened to me.
>> This problem is likely if the head cap is worn during use in highly
>> abrasive rigging environments or if sharp, granulated sand is allowed to
>> reside in the head cap's strap recess area. In addition, a number of
>> sails were produced with low stretch polypropylene webbing sensitive to
>> this abrasion. A newer, stronger webbing has been available and in use
>> most of this season as standard issue equipment.
>>
Don't know whether the low-stretch polypro was on my '96 Interface, but,
from my observation, it was the head-cap itself which had the sharp edges
and prompted the failure of the webbing. Due to the minimal clearance
between the strap at the front of my sail and the bottom of the head-cap
(I use a 400 cm skinny mast), the strap was rubbing right against the
bottom of the head-cap. For the record, the remaining piece of the
original webbing failed yesterday when rigging this sail, which wasn't
touching the head-cap at all. Sounds like the webbing had a problem, too.
-Ed
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