[Paddlewise] Bowlines and racks

From: <Jack_Martin_at_jtif.webfld.navy.mil>
Date: Tue, 16 Jun 1998 13:07:17 -0500
     I know we beat this subject up not that long ago, but I got a new 
     datapoint yesterday which I slipped onto our local Chesapeake Paddler 
     Association (CPA) list, and it has generated some interest.  So, for 
     PaddleWise, an interesting factoid ---
     
     Was speaking with a Yakima customer service rep yesterday about kayak 
     racks.  He gave me what sounded like a standard "please always use bow 
     and stern lines" disclaimer, which grew into a short discussion.  
     Apparently Yak did some tests recently, and discovered that when a 
     vehicle with a sea kayak on the roof passes a semi-truck heading the 
     opposite direction on a two lane highway, the wind blast created 
     generates a 200 pound instantaneous vertical lift on the boat's bow.  
     That's a bunch of pounds now trying to lever your boat out of its 
     straps or, as Chuck Sutherland pointed out this morning on his CPA 
     response, the forward rack and boat off the roof!  He was not speaking 
     hypothetically, apparently.
     
     Something to think about if you don't like taking the extra time or 
     effort to tie down the loose ends!
     
     Jack "Joq" Martin
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Received on Tue Jun 16 1998 - 10:14:09 PDT

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