Just out of curiosity Mike, would a flanged, tight fitting mechanical fastener (nut, bolt, and washers/ or rivet) transfer the stress as if it weren't drilled? My conjecture is that these general rules would be far different for a solid material as opposed to tubing as tubing relies on continuous surface runs for strength. Is this true? Michael Daly wrote: > > Therefore, a hole placed near the mid-span of the crossbar, right on the > horizontal centerline of the bar shouldn't affect it too much. Keep the hole > small - I wouldn't go much over 1/8", maybe 3/16 in a crunch. > > A vertical hole is even less of a risk, since lateral loads are likely less than > vertical. This is more so with the wide Thule bars, less with the circular section > Yakima bars. > > A solution that doesn't involve holes is always better. > > Mike > > PS Airframe mechanics do drill-stop cracks in aircraft components. This is the > one time you would prefer a drilled hole. There are limits on how this can be done, > however. -- ¤ Gabriel L Romeu ¤ http://studiofurniture.com + /diary or + /paint *************************************************************************** PaddleWise Paddling Mailing List - Any opinions or suggestions expressed here are solely those of the writer(s). You must assume the entire responsibility for reliance upon them. All postings copyright the author. Submissions: PaddleWise_at_PaddleWise.net Subscriptions: PaddleWise-request_at_PaddleWise.net Website: http://www.paddlewise.net/ ***************************************************************************Received on Sat Dec 15 2001 - 12:46:43 PST
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