Steve Cramer wrote: > > > I changed my > > footpeg location this year and temporally postponed the problem but plan on > > installing aluminum footbraces this spring. Northwest Design Works > > (available from NOC) as well as Yakima make aluminum footbraces. > > Hmmm. A couple of days ago, Ralph was advising keeping your tent poles > with aluminium ferrules in a waterproof bag to prevent corrosion from sea > water and sea air. Now folks are putting aluminum footpeg rails in. > Actually, I think prijon boats come with them. I don't know much about > aluminum, but is there an inconsistency here? I was a bit confused by Ralph's posting myself, experience having shown me that aluminum ususally oxidises to a certain point and stops- in normal conditions that is. In fact anodizing is an electical process which accelerates and intensifies the oxidation process to a deeper level (a few microns), protecting the metal with a very hard aluminum oxide surface(the substance often used for sandpaper) usually impervious to further degeneration. However, if aluminum is in contact with a dissimilar metal, steel, copper or brass, and immersed in a saline solution, this will cause a similar electrolytic reaction as anodizing and corrode the aluminum to complete disinigration (if applied long enough) which I suspect could be fairly quick on a thin walled aluminum tube tent pole. I would believe this could happen quickly with steel flanges or locks on the poles. I havn't any personal experience with ocean water and aluminum, so I hesitate making any truly authoritive remarks. I have replaced my footpegs with aluminum ones I have machined myself (extending them for my abnormally long appendeges), and hope they don't fatigue at an inoppurtune time... If anyone is interested in more research on this, I will ask on a very informative metalworking newsgroup. gabriel l romeu http://members.aol.com/romeug studio furniture http://members.aol.com/romeugp paintings, photos, prints, etc. http://members.xoom.com/gabrielR a daily photo journal *************************************************************************** PaddleWise Paddling Mailing List Submissions: paddlewise_at_lists.intelenet.net Subscriptions: paddlewise-request_at_lists.intelenet.net Website: http://www.gasp-seakayak.net/paddlewise/ ***************************************************************************Received on Sun Jan 24 1999 - 07:15:21 PST
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