Re: [Paddlewise] roof rack rust

From: "Mark Z" <seakayaker_at_dotzen.org>

> even in "dry" colorado, my racks have started rusting at the end. one is
> so "swollen" under the plastic that the only way to take the rack apart
> was cut the end off. 72" now 56"  ;-)

One "safety" feature about rust is that it takes up 8 times the volume of the
iron it replaces.  This makes it difficult for rust to hide.  You can be sure
that you'll never have rust under the coating that is significant enough
to cause failure without seeing the consequences first.  The uncoated
inner surface of the tube must be checked by eye, unfortunately.  As
long as the inner surface isn't getting scoured clean, the buildup of 
rust should be detected.  

Mike

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