Return-Path: Received: from spdmgaab.compuserve.com ([149.174.206.135]) by ns1.olsusa.com (Post.Office MTA v3.5.3 release 223 ID# 0-64832U3500L350S0V35) with ESMTP id com for ; Sat, 3 Jun 2000 10:26:25 -0400 Received: (from mailgate@localhost) by spdmgaab.compuserve.com (8.9.3/8.9.3/SUN-1.9) id KAA25745 for lancair.list@olsusa.com; Sat, 3 Jun 2000 10:32:27 -0400 (EDT) Date: Sat, 3 Jun 2000 10:32:13 -0400 From: James Frantz Subject: Wing spar bolts Sender: James Frantz To: "INTERNET:lancair.list@olsusa.com" Message-ID: <200006031032_MC2-A766-F63D@compuserve.com> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Disposition: inline X-Mailing-List: lancair.list@olsusa.com <<<<<<<<<<<<<<<<--->>>>>>>>>>>>>>>> << Lancair Builders' Mail List >> <<<<<<<<<<<<<<<<--->>>>>>>>>>>>>>>> >> >The bolt must not see any shear itself. The shear forces are carried by the friction between the parts.< I did the calculation for the 320/360 back when I was attaching the wings and determined that the bolts would handle 9G in shear at the maximum recommended gross weight. Any friction between parts would be in addition to that. I am not aware of any wing spar bolt failures so don't worry about those spar bolts that may seem a bit small in diameter. Jim Frantz >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> LML website: http://www.olsusa.com/Users/Mkaye/maillist.html LML Builders' Bookstore: http://www.buildersbooks.com/lancair Please send your photos and drawings to marvkaye@olsusa.com. >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>