Return-Path: Received: from smtp2.erols.com ([207.172.3.235]) by truman.olsusa.com (Post.Office MTA v3.5.1 release 219 ID# 0-52269U2500L250S0V35) with ESMTP id com for ; Sun, 3 Jan 1999 16:01:58 -0500 Received: from preinstalledcom (207-172-194-241.s50.as3.grn.erols.com [207.172.194.241]) by smtp2.erols.com (8.8.8/8.8.5) with SMTP id QAA15583; Sun, 3 Jan 1999 16:06:32 -0500 (EST) Message-ID: <368FD635.4D1@erols.com> Date: Sun, 03 Jan 1999 15:42:29 -0500 From: "Jeffrey B. Chipetine" Reply-To: abcrental@erols.com To: lancair.list@olsusa.com CC: abcrental@erols.com Subject: Double roll pins X-Mailing-List: lancair.list@olsusa.com Mime-Version: 1.0 <<<<<<<<<<<<<<<<--->>>>>>>>>>>>>>>> << Lancair Builders' Mail List >> <<<<<<<<<<<<<<<<--->>>>>>>>>>>>>>>> >> Dale Scholz' mention of double roll pinning the strut flange and shaft is not an uncommon approach to solving recurring shearing or more commonly, the crushing of a roll pin in a high stress area. On hydraulic jackhammers produced by Stanley Hydraulics, there is even a special roll pin available that is comprised of a "coil" style roll pin. They spec this special pin when jackhammer users find they repeatedly need to replace the standard pin. F.Y.I., Those of you w/ interest should also be aware that a standard roll pin can also be crushed in hi-cycle heavy load conditions often found in the construction industry. Where these loads are anticipated, we remove and inspect the pins on a regular basis.We find the coil style pins to have a far lesser incidence of failure than even the double pin method. I can get a part # from Stanley if you can't find them in the McMaster Carr catalogue. Regards to all..... Jeffrey B. Chipetine